Block of Flats Plans in Lewisham

A block of flats — a purpose-built apartment building — is a single structure containing several self-contained homes, each with its own front door, kitchen and bathroom, reached from a shared entrance, hallway, stair and (above a certain size) lift. In planning terms every one of those homes sits in Use Class C3, the dwellinghouse class, but the building is a new structure erected on a site, which makes it a new-build development rather than a change of use or a conversion. That distinction runs through everything on this page: you are not adapting an existing building, you are creating new floorspace and new dwellings from the ground up.

'Block of flats plans' is the shorthand people use for the full set of design information a new apartment building needs: the drawn scheme that goes to the council for planning permission, and then the far more detailed technical information that lets it be built and signed off. The planning plans establish what the building is — its footprint, height, massing, the number and mix of homes, the layout of each flat, the amenity space, parking, cycle and refuse provision, and how it sits in the street. The construction plans establish how it is built — foundations, frame, floors, the fire compartmentation and escape strategy, the mechanical and electrical services, drainage, and every detail a contractor and a building-control body need.

Because a block of flats is a new building rather than an alteration, the plans have to satisfy a wider range of standards than almost any other residential project. A single new home engages the space standards and the Building Regulations; a block of flats engages those and the affordable-housing regime, the density and design-led capacity policies, the fire-safety and building-safety framework for buildings with more than one dwelling, and — on larger schemes — an environmental, transport, energy and daylight/sunlight evidence base. The 'plans' are really an integrated design that reconciles all of it.

It is worth being precise about scale, because it changes the process. A pair of flats or a small mews block of, say, four to nine homes is a 'minor' application. Ten or more homes (or a site of 0.5 hectares or more, or 1,000 square metres or more of floorspace) is a 'major' application, with a longer determination period, statutory consultation, and — critically in Lewisham — the full weight of the affordable-housing and planning-obligation policies. Some very large schemes cross the threshold into requiring an Environmental Impact Assessment. We tell you at the outset which category your site falls into, because it drives the programme, the fees and the evidence you will need.

Yes — always, and it is full planning permission, not the lighter prior-approval or permitted-development routes. Building a new block of flats creates new dwellings and new floorspace on a site, which is development in the fullest sense, and there is no permitted development right that authorises the ground-up construction of a purpose-built apartment building. This is true across the whole borough, from Deptford, New Cross and Brockley in the north through Lewisham, Ladywell and Catford to Forest Hill, Sydenham and the southern wards. Whether you are building four flats on an infill plot or four hundred on a regeneration site, the principle is the same: a full application, assessed against the development plan.

People sometimes hear about permitted-development rights that touch on flats and assume one might apply. It is worth being clear why they do not. The commercial-to-residential prior-approval routes (Class MA and its predecessors) convert existing buildings; they do not permit new construction. The upward-extension rights that allow additional storeys on top of an existing block are tightly constrained, apply only to certain existing buildings, and are not a route to a new free-standing block. And the householder permitted-development rights for extensions and outbuildings apply to houses, not to the creation of a new apartment building. None of them lets you build a new block from scratch — that has always required full planning permission.

Full permission means the council assesses the scheme against the Lewisham Local Plan 2020-2040, the London Plan 2021 and the National Planning Policy Framework, weighing the principle of the development, its density and design, the housing mix and affordable-housing contribution, the standard of the homes, the impact on neighbours and the townscape, transport, drainage, ecology, energy and much more. On a major scheme it is decided by the council's planning committee, or in some cases by the Mayor of London where the scheme is of strategic importance or referable to City Hall. This is a serious, evidence-heavy process, which is precisely why the quality of the plans and the supporting case matters so much.

Planning permission is also separate from — and additional to — the other consents a new block needs: Building Regulations approval (including, for higher-risk buildings, the Building Safety Regulator's gateway regime), any demolition prior notification, party wall agreements with neighbours, a build-over agreement with the water authority where you build near a public sewer, and highway consents for new accesses. A common and costly error is to treat the project as 'getting planning' and to leave the rest until later; on a block of flats the fire, structural, drainage and building-safety requirements shape the plans from the first sketch, and designing them in from the start is the difference between a smooth project and an expensive redesign.

The first question any block-of-flats scheme has to answer is how many homes the site can properly hold. For years London used a 'density matrix' that gave a range of dwellings per hectare based on a site's public-transport accessibility and setting, but the London Plan 2021 deliberately abandoned that number-first approach. The Mayor's own guidance is blunt about why: 'The number is just the output and if you start with it as the input you won't end up with the right development.' In its place is Policy D3 and the design-led approach to optimising site capacity — the idea that you work out the right amount of development for a specific site by testing what its context, character and constraints can accommodate to a high design standard, rather than by applying a target figure.

In practice this means a Lewisham block of flats is expected to optimise — not maximise — the site's capacity. Optimising means putting the most homes on the site that can be delivered while meeting every quality test: proper space standards, adequate daylight and sunlight for the new homes and for neighbours, sensible massing and height for the townscape, real amenity space, and a workable ground floor for entrances, servicing, cycles and refuse. A scheme that crams in an extra storey or an extra flat at the cost of failing one of those tests has not optimised the site; it has overdeveloped it, and that is a classic reason for refusal.

Lewisham applies this within its own spatial strategy. The borough directs the most growth — and the greatest heights and densities — to its town centres and regeneration areas, principally Lewisham town centre, Deptford and New Cross in the north, and Catford. Its Tall Building Review and the emerging heights framework indicated, for example, that Lewisham town centre can accommodate buildings up to around twenty storeys, while Catford's Rushey Green is guided to a maximum in the order of thirteen storeys — with much lower heights expected in the residential suburbs and conservation areas away from the centres. A block of flats has to sit within the height and density expectations for its particular location, and proposing a tall building outside a designated tall-building zone is very difficult.

The density that emerges from the design-led process is therefore site-specific, and the honest answer to 'how many flats can I build?' is always 'it depends on the site' — its size, shape, orientation, the transport nearby, the character of the surrounding buildings, the daylight and sunlight geometry, the trees and any heritage or flood constraints. What we do at feasibility is test that capacity properly: model the massing, check the daylight/sunlight impact, lay out compliant homes, and arrive at a realistic number the council can accept, rather than a headline figure that collapses under scrutiny. Optimising the site well is where the value in a block-of-flats scheme is made or lost.

For any block of flats of scale, the affordable-housing requirement is one of the two or three factors that most shape the scheme — and its viability. Lewisham's adopted Local Plan sets a strategic target, through Policy HO3, that 50% of all new homes across the borough should be genuinely affordable, and it asks every development to deliver the maximum reasonable amount of affordable housing. That 50% is one of the most demanding borough targets in London, and it reflects an acute local need identified in the council's Strategic Housing Market Assessment.

The way the policy operates in practice follows the London Plan's threshold approach. A scheme that provides at least 35% affordable housing (by habitable room), in the right tenure, and meets the other criteria can qualify for the 'fast-track' route, which means the council will not require a detailed financial viability assessment to scrutinise the scheme's economics. A scheme offering less than 35% falls into the 'viability tested' route, where the applicant must open the books: submit a full financial viability assessment, justify why more affordable housing cannot be delivered, and accept early-stage and late-stage viability reviews that claw back additional affordable homes or contributions if the scheme performs better than forecast. In short, 35% is the practical threshold that determines how much scrutiny the numbers face, while 50% remains the aspiration Lewisham pushes towards.

Tenure matters as much as quantity. Lewisham's baseline split is roughly 70% low-cost rented (social rent or London Affordable Rent — genuinely affordable homes let at social rents) and 30% intermediate (shared ownership or London Living Rent, aimed at households who can part-buy or pay a controlled rent). The council seeks the affordable homes on-site, integrated with the private homes ('tenure blind' so they are indistinguishable from the outside), rather than as an off-site payment, and it resists poor-door arrangements that segregate affordable residents. Even small schemes are engaged: minor developments of two to nine homes are expected to make an affordable-housing contribution under the small-sites provisions, usually as a financial payment where on-site delivery is impractical.

There is a live wider context worth knowing. In late 2025 the Mayor of London introduced emergency measures lowering the London-wide fast-track affordable-housing threshold (from 35% towards 20%) to try to unlock stalled housebuilding, and Lewisham was among the councils that challenged that change — the borough has been determined to hold its line on affordable housing. Because this area of policy is moving quickly, and because the exact figures a scheme must hit depend on the date it is submitted and the council's position at that moment, we always confirm the current threshold, tenure requirement and review-mechanism expectations for your specific scheme before we fix the mix. The principle is durable — Lewisham wants the maximum genuinely affordable housing — but the precise percentages should always be checked on the day.

A block of flats is only as good as the homes inside it, and Lewisham assesses every single one against the space and design standards. The baseline is the Nationally Described Space Standard (NDSS), which sets a minimum gross internal area for each home by the number of bedrooms and occupants: a one-person studio must be at least 37 square metres (with a shower room) or 39 square metres (with a bathroom); a one-bedroom two-person flat at least 50 square metres; a two-bedroom three-person flat at least 61 square metres; a two-bedroom four-person flat around 70 square metres; and larger family flats step up from there, with defined minimum sizes for double and single bedrooms, built-in storage, and floor-to-ceiling height.

Because Lewisham is in London, the London Plan's housing design standards apply on top of the NDSS and are, in several respects, more demanding. Floor-to-ceiling height must be at least 2.5 metres over at least 75% of each home's internal area (higher than the 2.3 metre national minimum), which directly affects the building's floor-to-floor heights and therefore its overall height and the number of storeys that fit under a given cap. Every home must have private outdoor amenity space — a balcony, terrace or private garden — of at least 5 square metres for a one- to two-person home, plus a further 1 square metre for each additional occupant, with a minimum depth and width of 1.5 metres so it is genuinely usable. There are also standards on dual-aspect homes and on limiting single-aspect north-facing units, on the number of homes served off a single core per floor, on lift provision, and on accessibility.

Accessibility is a standard in its own right. The London Plan requires at least 10% of new homes to meet Building Regulations Part M4(3) — wheelchair user dwellings, either adaptable or accessible — with the remaining 90% meeting M4(2), the accessible and adaptable standard. On a block of flats this shapes the layout, the lift and corridor widths, the door and threshold details and the parking provision, so it has to be planned in from the outset rather than retrofitted. Communal amenity space, play space for children (calculated from the expected child yield of the scheme), refuse and recycling stores sized to the borough's requirements, and secure long-stay cycle parking (the London Plan expects around two spaces for a two-bed-plus home) all have to be provided and shown on the plans.

We design to every one of these standards from the first sketch, because they interact. Ceiling heights drive the section; amenity balconies drive the elevations and the structural frame; the accessible-home percentage drives the cores and corridors; the child yield drives the play space; the cycle and refuse requirements drive the ground floor. Testing the real dimensions of the site against all of them before fixing the unit count is the only way to arrive at a scheme that both stacks up commercially and passes the council's quality tests. It is always better to deliver fewer, genuinely good homes the council can approve than one flat too many that pulls the whole scheme below standard.

Lewisham is an old part of London with a surprisingly deep and often turbulent history for a borough now defined by railways, high streets, and a fast-moving wave of new apartment building. The modern London Borough of Lewisham was created in 1965 by merging the former metropolitan boroughs of Lewisham and Deptford, and it stretches from the Thames at Deptford in the north down through New Cross, Brockley, Catford and Forest Hill to the green edges of Beckenham Place Park and the Downham and Bellingham estates in the south. That north-to-south spread — riverside industrial past, dense Victorian and Edwardian inner suburbs, and interwar council estates — is exactly why new blocks of flats are welcomed in some parts of the borough and resisted in others.

Deptford, on the borough's northern edge, was one of the most important places in maritime England. Henry VIII founded the Royal Dockyard at Deptford in 1513, and for centuries ships were built and provisioned there; Sir Francis Drake was knighted aboard the Golden Hind at Deptford by Elizabeth I. The playwright Christopher Marlowe, Shakespeare's great contemporary, was killed in Deptford in 1593 in a dispute whose circumstances are still debated. Today the same riverside is the frontier of the borough's tallest new development: the 40-acre Convoys Wharf, the former Royal Dockyard site, has held outline permission since 2014 for up to 3,500 homes in a range of buildings including landmark towers up to around 40 storeys — the single largest development site in Lewisham and a symbol of how apartment building has returned to the Thames.

Blackheath, straddling the boundary with Greenwich, is one of the borough's grandest landmarks and one of its most historically charged open spaces. It was on Blackheath that Wat Tyler mustered the rebels of the Peasants' Revolt in 1381, and Jack Cade's rebellion assembled there in 1450. The heath is overlooked by fine Georgian and Victorian houses, provides the traditional start of the London Marathon, and lies within the Blackheath Conservation Area — England's first conservation area, designated jointly with Greenwich in 1968. Nearby, Frederick Horniman, a Victorian tea merchant and obsessive collector, gave Forest Hill the Horniman Museum and Gardens, open to the public since 1901 and still one of south London's best-loved attractions. These are the sensitive, low-rise settings where a large new block of flats is hardest to justify.

The borough's more recent history is just as much part of its identity. In 1977 thousands of local people confronted a National Front march in what became known as the Battle of Lewisham, a defining moment in the area's tradition of activism and its strong sense of a diverse, mixed community. The rivers Ravensbourne and Quaggy, and Deptford Creek, thread through the borough and shaped both its industry and its flood history — the 1968 floods hit Lewisham hard — which is why watercourses, flood risk and sustainable drainage are live planning considerations for any new block on lower-lying land. The Ravensbourne now runs, restored and daylighted, through the heart of the rebuilt Lewisham Gateway, where thousands of new flats have risen around the station in the past decade.

For a new block of flats, all of this is planning-relevant, not just colour. The borough's spatial strategy pushes the tallest, densest apartment building towards the town centres and regeneration areas — Lewisham Gateway and the shopping-centre site, Deptford's riverside, Surrey Canal, Catford — and keeps heights low in the Victorian suburbs and the conservation areas of Blackheath, Brockley, Telegraph Hill, Ladywell and Forest Hill. Knowing exactly where your site sits in that geography, and in the borough's history, is the starting point for a credible scheme: it tells you how tall, how dense and what character the council will accept before you draw a line.

The reason Lewisham is now covered in cranes is written into its geography and its transport. From the 1850s the arrival of the railways turned villages and market gardens into dense inner suburbs; the line reached Blackheath in 1849 and stations opened across the borough, and developers threw up mile after mile of Victorian and Edwardian terraces. But it is the modern layering of rail, DLR and Overground — National Rail to London Bridge, Cannon Street and Charing Cross, the DLR at Deptford Bridge, Elverson Road and Lewisham, and the Overground through New Cross, Brockley and Forest Hill — that has made the borough one of the most attractive places in London to build flats, because good public transport is exactly what the design-led density approach rewards.

The turning point was regeneration policy. From the early 2000s the council designated a string of growth and regeneration areas and set out to intensify them: over the 2011-2026 period those areas were forecast to deliver at least around 15,000 new homes. The most visible result is Lewisham Gateway, the comprehensive rebuild of the area around Lewisham station, where a partnership scheme has delivered thousands of new flats in tall buildings, a new road layout and the daylighting of the Ravensbourne and Quaggy rivers. It transformed the perception of the town centre and set the template — tall, dense, mixed-use apartment building clustered around a transport hub — that later schemes have followed.

The north of the borough has become the borough's biggest frontier. The five strategic sites for regenerating north Lewisham — Convoys Wharf, Surrey Canal Triangle, Oxestalls Road, Plough Way and Lewisham Gateway — between them carry capacity for many thousands of homes. Convoys Wharf alone, the former Royal Dockyard, has outline permission for up to 3,500 homes including towers of up to around 40 storeys. Deptford and New Cross, long characterised by their creative and industrial character, have seen a rapid succession of new apartment blocks on former industrial and commercial land. Catford, in the borough's centre, is the subject of its own major regeneration ambitions with new heights guided by the A21 framework.

That growth has not been frictionless, and the friction is part of the current policy climate. Rising build costs, infrastructure requirements and viability pressures have led some large Lewisham schemes to seek reductions in their affordable-housing offer — a well-publicised example being a major multi-tower scheme where the developer sought to cut affordable homes after being hit with a large railway-station contribution. The council, for its part, has held firmly to its 50% affordable ambition, even joining a legal challenge against the Mayor's 2025 move to lower the London-wide affordable threshold. The result is a borough that actively wants new blocks of flats, and lots of them, but expects them to deliver genuinely affordable homes and real quality — the exact tension every block-of-flats scheme in Lewisham now has to navigate.

The classic Lewisham block-of-flats site is well-connected, previously developed land in or near a town centre or transport hub: a former commercial or light-industrial plot, a redundant retail or office building, a garage or workshop yard, a large corner site, or an under-used pocket of land within the regeneration areas of Deptford, New Cross, Lewisham and Catford. These are exactly the locations the borough's spatial strategy and the London Plan's design-led density approach favour, because good public-transport access and a robust urban context can support the height and density that make an apartment scheme work. Brownfield land is strongly preferred over greenfield, and a good transport score is one of the biggest positives a site can have.

Infill and backland plots are a significant part of Lewisham's supply, and they can make excellent small blocks of flats — but they demand careful design. A backland site behind existing houses, or a tight infill between them, raises immediate questions of access, overlooking, daylight and sunlight to the neighbours who surround it, and 'garden-grabbing' concerns where the plot is carved out of residential gardens. The borough's suburban character has to be respected: a block that looms over back gardens, overshadows neighbours or is served by an inadequate access lane will be refused. The successful backland block is the one designed around its neighbours from the start — modest in height, carefully positioned, with windows and balconies arranged to avoid overlooking.

Some sites carry constraints that shape or limit what can be built. Land within or adjoining the conservation areas of Blackheath, Brockley, Telegraph Hill, Ladywell, Lee Manor and Forest Hill faces height, scale and design tests that generally rule out anything tall or bulky. Lower-lying land near the Ravensbourne, the Quaggy or Deptford Creek engages flood risk and drainage. Sites with mature trees, protected species or a contaminated industrial past bring ecology and remediation requirements. And any site within a designated view or near a heritage asset engages the borough's protected-views and tall-buildings policies. None of these is necessarily fatal, but each has to be understood before a scheme is designed, because they set the envelope.

At the other end, some sites simply do not suit a block of flats. A small plot deep in a low-density conservation suburb, with poor transport, surrounded by two-storey houses, is a poor candidate for an apartment building of any real size — the character, daylight and amenity tests will constrain it to something close to a house. Part of what we do at feasibility is give you an honest read of what your site can carry: whether it is a genuine apartment site that can support a real block, or a constrained plot where a smaller, lower scheme (or a different product entirely) is the realistic answer. There is no value in designing a tall block for a site the borough will only ever accept a modest building on.

Good block-of-flats design begins with the building's response to its site and its neighbours, because that is what the council and local residents judge first. The London Plan's design-led approach asks the massing — the height, bulk and shape of the building — to respond to the prevailing scale and character of the surrounding context, to protect the daylight and sunlight of neighbouring homes and gardens, to avoid unacceptable overlooking, and to create a positive addition to the street rather than an alien intrusion. On a corner or gateway site a bolder form may be appropriate; hard against Victorian terraces, a more contextual scale and material palette is expected. Getting the massing right is the single biggest design decision, and it is tested with three-dimensional models and daylight/sunlight studies at feasibility.

Inside the envelope, the plan is an exercise in stacking compliant homes efficiently around a well-designed core. The best apartment layouts maximise dual-aspect homes (which get light and ventilation from two sides), minimise single-aspect north-facing flats (which the London Plan discourages), keep the number of homes served off each core per floor within accepted limits, and give every home its private balcony or terrace, proper storage and a sensible internal arrangement. The ground floor is where a block of flats most often succeeds or fails: it has to accommodate a welcoming entrance and lobby, the cycle store, the refuse and recycling store, plant and metering, step-free access, and often active frontage or a family maisonette with its own garden door — all without turning the street elevation into a run of blank shutters and bin-store doors.

Amenity and landscape are integral, not decorative. The scheme has to provide private amenity space for every home, communal amenity space for residents, and — where the flat mix generates children — dedicated play space sized to the expected child yield. On tighter sites some of that amenity moves onto roof terraces or podium gardens, which brings its own structural, drainage, wind and fire-safety implications that have to be designed in. Tree retention and planting, biodiversity net gain, and the treatment of the boundaries all form part of the landscape design that accompanies the application and that the council increasingly expects to be genuinely green rather than token.

We design the building as an integrated whole: the massing that the townscape can accept, the internal layout that delivers compliant homes and the right mix, the ground floor that works for entrances and servicing, the amenity and landscape that meet the standards, and the elevations that carry the balconies, materials and detailing. Because we coordinate the architecture with the structure, the services and the fire strategy from the outset, the handsome scheme on the planning drawing is the same scheme that can actually be built — the cores line up, the balconies are supported, the risers and plant fit, and the escape strategy works.

A block of flats is a substantial piece of engineering, and the structural design is not an afterthought bolted on after planning — it shapes the plan, the section and the cost from the beginning. Crown provides the structural design alongside the architecture and the services, so the scheme is coordinated from day one and the beautiful planning drawing is a structure that actually stands up and can be built economically. The starting point is the ground: a proper understanding of the site's ground conditions through a site investigation, boreholes and trial pits, because the foundations depend entirely on what is beneath.

Foundation choice follows the ground and the loads. Many Lewisham sites — particularly the low-lying, formerly industrial land near the rivers and the creek — have soft, variable or made ground, high water tables and, on brownfield sites, contamination, all of which point towards piled foundations that carry the building's weight down to competent strata, rather than shallow strip or pad footings. The alluvial soils of the river valleys and any history of filling or industrial use make ground investigation especially important here; getting the foundation design wrong is the most expensive mistake possible on a block of flats. Where a basement is proposed (for parking, plant or additional homes), the design also has to address retaining the surrounding ground, waterproofing against a high water table, and the effect of the excavation on neighbouring buildings.

Above the foundations, the superstructure is usually a reinforced-concrete frame or flat-slab, a loadbearing masonry structure for lower blocks, a steel frame, or increasingly a hybrid — chosen to suit the height, the span, the acoustic and fire requirements, and the buildability of the site. The structure has to carry not just its own weight and the residents but wind loads (which grow rapidly with height), and it has to resist disproportionate collapse — the requirement, tightened after Ronan Point and reinforced by the modern regime, that the failure of one element must not bring down a disproportionate part of the building. The floors between homes have to be designed to carry residential loads and, critically, to meet the acoustic separation standards, because sound insulation and structure are inseparable in an apartment building.

Every part of this interacts with the architecture and the fire strategy. The structural grid has to line up with the flat layouts and the parking below; the cores that provide stability are the same cores that provide the fire-protected escape stairs and lifts; the balconies need supporting and detailing for both structure and fire; the transfer structures needed where the grid changes between the homes and the ground floor add cost and depth. By designing the structure, the architecture and the services as one coordinated model, we avoid the classic failure of an apartment scheme — a planning permission for a building that cannot be built as drawn once the engineers get to it — and we give you a realistic cost picture from the start.

A block of flats is a machine for living in as much as a structure, and its mechanical, electrical and plumbing (MEP) services are a major part of the design, the cost and the planning case. Each home needs heating and hot water, ventilation, drainage, water supply, electrical power and data, and the building as a whole needs communal services — lifts, landlord's power and lighting, life-safety systems, and often a communal heating or metering arrangement. Crown coordinates the building-services design with the architecture and the structure, because services need risers, plant space, ceiling voids and roof space that have to be planned in, not squeezed in later.

Heating is where the biggest change is happening. Under the Future Homes Standard, new homes can no longer rely on traditional gas boilers, and new blocks of flats are moving decisively to low-carbon heating: individual air-source heat pumps, communal or district heat networks fed by low-carbon sources, and, on some sites, ground-source systems. The London Plan's energy hierarchy — be lean, be clean, be green, be seen — pushes schemes to minimise demand through fabric efficiency, then to use efficient and low-carbon systems, then to add on-site renewables, and finally to monitor performance in use. On a major scheme the energy strategy is a substantial technical document that the council and the GLA scrutinise, and it has to be developed with the architecture from the outset because it drives the fabric, the plant space and the roof.

Ventilation, water and drainage all scale up in a block of flats. Many new apartments use mechanical ventilation with heat recovery (MVHR) to provide fresh air efficiently in an airtight, well-insulated building, which needs ducting routes and unit space in every home. Water has to be supplied and, in taller buildings, boosted, with storage and pumps in the plant room; hot-water demand across many homes is significant. Drainage has to collect soil and waste from every home through coordinated stacks and take it to the public sewer — often via attenuation to control the rate of discharge — and where the building sits over or near a public sewer a build-over agreement with the water authority is required. Lifts are essential above a certain height and for accessibility, and they, their motor rooms and their pits have to be designed into the cores.

Because all of these services compete for the same limited space — risers, ceiling voids, plant rooms, the roof — coordinating them with the structure and the architecture is essential. A riser that is too small, a plant room that will not fit the heat pumps, a ceiling void too shallow for the ducts, or a roof already full of terraces with no room for the renewables: each of these is a redesign waiting to happen if the services are not integrated from the start. We design the MEP alongside everything else so the scheme is genuinely deliverable and meets its energy and comfort targets in use, not just on paper.

Energy and carbon are now central to designing a new block of flats, and the standard is rising fast. Every new home must comply with Part L of the Building Regulations (conservation of fuel and power) and Part F (ventilation), demonstrated through SAP calculations for each dwelling type, and London schemes must also satisfy the London Plan's more demanding requirements — a percentage carbon reduction beyond the Building Regulations baseline, a whole-life-carbon assessment on major schemes, and a cash-in-lieu carbon-offset payment to the council for any shortfall against zero-carbon. The direction of travel is unambiguous: new homes are being designed to be low-carbon and, increasingly, net-zero-ready.

The Future Homes Standard is the step change. It requires new homes to produce a very large reduction in carbon emissions compared with older regulations — in the order of a 75-80% cut — which in practice means highly efficient building fabric, no fossil-fuel heating, and low-carbon systems such as heat pumps or low-carbon heat networks. The final Approved Documents were published in 2026 with a transition period running into 2027, and the effect on block-of-flats design is profound: no gas boilers, better insulation and airtightness, heat pumps or heat networks with the plant space they need, mechanical ventilation with heat recovery, and — under the 2026 amendments to Part L — on-site renewable electricity generation (solar PV) as a functional requirement, with a target broadly equivalent to solar coverage of a significant proportion of the building's footprint where feasible.

This all has to be designed in from the start, because it shapes the building. Fabric efficiency drives wall and roof build-ups and therefore the elevations and floor areas; heat pumps and heat networks need plant rooms, external condenser space or boreholes; MVHR needs ducting in every home; solar PV needs unobstructed roof area, which competes with roof terraces, plant and green roofs. A scheme that treats energy as a bolt-on at the end ends up either non-compliant or forced into an expensive redesign. Designed properly, the energy strategy and the architecture reinforce each other — the fabric, the form, the plant and the renewables all planned together.

We prepare the energy strategy, the SAP calculations and the London Plan energy assessment as part of the coordinated design, so the scheme meets Part L, the London Plan and the emerging Future Homes Standard, and so the low-carbon systems have the space and the fabric they need. Because we design the services and the architecture together, the sustainability credentials that help win the planning permission are the same ones the finished building actually delivers for its residents in lower bills and comfort.

Fire safety is one of the defining considerations in designing a block of flats, and the framework has changed profoundly since the Grenfell Tower fire in 2017. Every apartment building has to be designed so that each home is a fire-resisting compartment, so that fire and smoke are contained and cannot spread between homes or through the structure, so that there is a protected route out, and so that the fire service can reach and fight a fire. This is Approved Document B (fire safety) of the Building Regulations, and on a block of flats it governs the compartmentation, the escape stairs, the corridors, the fire doors, the detection and alarm, the fire-fighting access and shafts, the smoke control, and — critically — the external walls and cladding, where the use of combustible materials on the external walls of tall residential buildings is now banned.

The single biggest recent change to plan around is the second staircase. Following consultation after Grenfell, the Government confirmed that new residential buildings above 18 metres in height must be provided with a second staircase, giving residents an alternative means of escape and firefighters independent access. The requirement is embedded in the updated Approved Document B and takes full effect for new buildings from late 2026 (with transitional arrangements). A second staircase is not a minor addition: it consumes floor area on every storey, changes the efficiency of the plan, affects the core layout and the number of homes per floor, and materially affects viability — so on any building approaching or exceeding 18 metres it has to be designed in from the very first massing study, not discovered later.

For taller and larger blocks, the Building Safety Act 2022 adds a whole regulatory regime on top of the Building Regulations. A 'higher-risk building' — broadly one at least 18 metres tall or with at least seven storeys, containing two or more residential units — is subject to the Building Safety Regulator's oversight through three 'gateways': Gateway One at the planning stage (where fire safety must be considered and the Health and Safety Executive is a statutory consultee), Gateway Two before construction can start (the Regulator must approve the detailed design), and Gateway Three before occupation. The regime also requires a 'golden thread' of information about the building's design and construction to be created and maintained, and it makes the responsibilities of the client and the designers around fire safety far more onerous. These gateways add time and rigour to the programme, and they reward getting the fire strategy right early.

We design the fire strategy as an integral part of the scheme from the outset, in step with the architecture, the structure and the services — the compartmentation, the escape stairs (including a second staircase where the height requires it), the fire-fighting shafts, the smoke control, the detection strategy and the non-combustible external wall build-up. Where the building is a higher-risk building, we plan for the gateway regime and the golden thread from the start. On a block of flats, fire safety is not a box to tick at the end; it is one of the core drivers of the plan, and treating it that way is what allows a scheme to move smoothly from planning permission to a building the Regulator will approve and sign off.

Water is a serious design consideration for any Lewisham block of flats, both getting it away from the building and keeping the site safe from flooding. A new apartment building creates a large amount of roof and hard surface, which — left unmanaged — would discharge rainwater fast into a drainage network that is often already at capacity, and into rivers that have flooded the borough before. The Ravensbourne and the Quaggy run through Lewisham and Deptford Creek reaches the Thames at Deptford; the 1968 floods are within living memory, and flood risk and drainage are live, decisive planning issues on lower-lying sites.

The London Plan and national policy require new development to manage surface water through sustainable drainage systems (SuDS) and to follow a drainage hierarchy: reuse or infiltrate rainwater where the ground allows, then attenuate and release it slowly to watercourses or the sewer at a strictly limited (greenfield or close-to-greenfield) rate. On a constrained urban block that usually means a combination of green and blue roofs, permeable surfaces, rainwater harvesting, and underground attenuation tanks that store storm water and release it at a controlled rate. The aim is that the new building discharges no faster — and ideally more slowly — than the site did before, so it does not add to flood risk downstream. This has real design consequences: attenuation tanks need space beneath the site or podium, green roofs compete with solar PV and terraces for roof area, and the whole drainage strategy has to be coordinated with the structure and landscape.

Where a site lies in a mapped flood zone or near a watercourse, a flood risk assessment is required, and the design has to respond: setting finished floor levels above the flood level, keeping vulnerable uses and sleeping accommodation out of the most at-risk areas, providing safe access and escape in a flood, and sometimes contributing to wider flood defences or river restoration. Lewisham has led on 'daylighting' its rivers — bringing the Ravensbourne and Quaggy back to the surface as part of regeneration, most visibly at Lewisham Gateway — and a riverside site may be expected to contribute to that blue-green infrastructure and to enhance the river corridor rather than turn its back on it.

We assess flood risk, ground permeability and the existing drainage as part of feasibility, and we design the SuDS and drainage strategy with the structure, the landscape and the roof from the outset. Getting this right protects the residents, satisfies the Environment Agency and the lead local flood authority, and avoids the late redesign that comes from discovering the site cannot drain as assumed — a common and expensive surprise on riverside and low-lying Lewisham sites.

Most block-of-flats sites in Lewisham are previously developed, which means something usually has to come down before anything goes up, and the demolition and the construction that follows are themselves regulated and have to be planned. Demolition of a building generally requires a prior-notification to the council (and full permission where the building is in a conservation area or is listed), a demolition method statement, and attention to asbestos, dust, noise and the protection of neighbouring structures. On contaminated former industrial land — common in north Lewisham and Deptford — demolition and remediation go hand in hand, and the remediation strategy is often secured by a planning condition.

Party wall matters arise wherever the works affect a shared or boundary wall, excavate near a neighbour's foundations, or build up to or astride a boundary — all of which are common on the tight urban plots a block of flats occupies. The Party Wall etc. Act 1996 requires the correct notices to be served on adjoining owners, and where they do not consent, a party wall award prepared by surveyors regulates how the work is done and protects both sides. Deep excavations for basements and piled foundations, in particular, engage the Act and require careful monitoring of neighbouring buildings, so party wall procedures have to be started in good time — they can take weeks or months and can hold up a start on site if left too late.

The construction phase itself is a planning matter on any scheme of scale. Lewisham will normally require a construction management plan or construction logistics plan controlling the hours of work, the routing and management of construction traffic, wheel-washing and dust suppression, and the protection of the highway, pedestrians and neighbouring occupiers — often secured by a pre-commencement condition. On sensitive or constrained sites, and near schools, the council pays close attention to how a large building can be built without unacceptable disruption, and a credible logistics strategy is part of demonstrating that the scheme is deliverable.

We plan the demolition, the neighbour and party wall processes and the construction logistics as part of the overall project, so they do not become the bottleneck that stalls a project after permission is granted. Coordinating these with the structural and building-safety design means the sequence from clearing the site to topping out the new block is worked out on paper before the contractor arrives, rather than negotiated on the hoof at the neighbours' expense.

A new block of flats creates net additional floorspace, and net additional floorspace is exactly what the Community Infrastructure Levy (CIL) is charged on. CIL is a fixed, per-square-metre charge that funds the infrastructure needed to support development, and a Lewisham block of flats is liable for two layers of it: the Mayor of London's CIL (MCIL2), which helps fund Crossrail and, in due course, Crossrail 2, and the borough's own Lewisham CIL. The rates are set per square metre of net additional gross internal floorspace, indexed for inflation each year, so the exact figure depends on the size of the scheme and the year it is charged — but on a block of flats the combined liability runs to a substantial sum that has to be built into the appraisal from the start.

CIL has important mechanics that affect the numbers. It is charged on net additional floorspace, so where an existing lawful building on the site is demolished, its floorspace can usually be offset against the new floorspace, reducing the liability — a real advantage on redevelopment sites. Affordable housing delivered on the scheme benefits from mandatory social-housing relief from CIL, which is one of several ways the affordable and CIL positions interact. The levy is triggered on commencement of development, and there are formal notices and procedures to follow to claim reliefs and set payment dates; getting these wrong can be costly, so the CIL position is worked out and managed carefully rather than left to chance.

Alongside CIL, most major schemes carry Section 106 planning obligations — a legal agreement between the developer and the council securing things CIL does not cover. On a Lewisham block of flats the Section 106 typically secures the affordable housing (its amount, tenure, and the review mechanisms), the carbon-offset payment for any energy shortfall, contributions to local infrastructure and services made necessary by the development, highway and public-realm works, and sometimes employment and training commitments during construction. The Section 106 is negotiated in parallel with the application and has to be completed before permission is issued, so it is part of the project timeline, not an afterthought.

We flag the CIL liability and the likely Section 106 obligations at feasibility, so the numbers that determine whether a scheme is viable — including the crucial interaction between affordable housing, CIL relief and the carbon-offset payment — are on the table before the design is fixed. Understanding these costs early is essential, because they, together with the affordable-housing requirement, are what decide whether a given number of flats on a given site is deliverable at all.

A block-of-flats project runs through the RIBA Plan of Work stages, and at each stage we produce the drawings and documents that carry it forward. At feasibility (RIBA Stage 1 and into Stage 2, concept design) we survey the site, establish the constraints, test the massing and capacity, prepare a concept scheme and the initial appraisal, and — where it adds value — take the scheme to pre-application with the council. This is where the fundamental decisions are made: how tall, how dense, what mix, how much affordable housing, and whether the site can carry the scheme you want.

For the planning application (developed design, RIBA Stage 3, worked up to the level a full application needs) we prepare the full drawing package: an accurate measured and topographical survey, a site location plan and block plan, existing and proposed floor plans for every level, elevations, sections, a roof plan, and detailed unit-type plans with each home's area, aspect and amenity space annotated so the case officer can check them against the standards. Alongside the drawings we prepare the supporting documents a major application requires: a design and access statement, a planning statement setting out compliance with the Lewisham Local Plan and London Plan, an affordable-housing statement (and, where relevant, a financial viability assessment), an energy and sustainability statement, a transport statement or assessment and travel plan, a flood risk assessment and drainage strategy, a daylight/sunlight assessment, an ecology and biodiversity net-gain assessment, an arboricultural report, a heritage statement where relevant, a fire statement, and a construction management plan.

After permission (technical design, RIBA Stage 4) the level of detail steps up again for the Building Regulations and construction information: the structural design and calculations, the detailed fire strategy, the mechanical and electrical services design, the drainage design, the acoustic and thermal detailing, and the fully coordinated construction drawings and specifications the contractor and the building-control body (or, for a higher-risk building, the Building Safety Regulator at Gateway Two) need. Because we prepare the architecture, the structure and the services in-house, this information is coordinated rather than a set of separate packages that have to be reconciled on site.

The thread that runs through every stage is consistency. The number and mix of homes on the planning drawings match the affordable-housing statement; the areas on the unit plans match the space-standard schedule; the energy strategy matches the plant shown; the fire strategy matches the cores and the escape drawings; the drainage matches the roof and the landscape. A coordinated, internally consistent application is materially more likely to be validated, recommended and approved than a set of drawings and reports that contradict one another — and it is far cheaper to build.

The process starts with feasibility. We survey the site, establish its planning history and constraints, test the massing and the capacity, and give you an honest view of what the site can support — how many homes, how much affordable housing, what height, and whether the scheme you have in mind is realistic — before you commit to a full application. On a block of flats this stage earns its keep many times over, because it is far cheaper to discover a fatal constraint or an unviable affordable-housing position on paper than after a refusal.

Pre-application advice is almost always worthwhile on an apartment scheme, and on major schemes it is close to essential. Lewisham offers a pre-application service, and for a scheme of scale it lets you get an early written steer from the council (and, on larger schemes, the GLA) on the acceptable height and density, the affordable-housing expectation, the design approach and the technical requirements, while there is still time to shape the scheme. On significant schemes a design review panel may also assess the proposals. We prepare and manage the pre-application and design-review process where it adds value, because a scheme that arrives having been developed in dialogue with the council is far more likely to be recommended for approval.

We then prepare the full drawing package and the suite of supporting documents, submit the application to Lewisham through the Planning Portal, and manage it through validation, consultation and determination. A minor application (fewer than ten homes) runs against an eight-week statutory target; a major application (ten or more homes) against a thirteen-week target, or sixteen weeks where an Environmental Impact Assessment is required — and in practice larger schemes usually take longer and are decided by the planning committee, with the Section 106 agreement completed before permission is issued. We respond to the case officer, negotiate amendments where they will secure approval, address neighbour representations, and steer the scheme to a decision.

Once permission is granted, we discharge the pre-commencement conditions and take the scheme through the Building Regulations and construction stages. For a higher-risk building this means the Building Safety Regulator's gateway regime — Gateway Two approval of the detailed design before construction can begin, and Gateway Three before occupation — with the golden thread of information maintained throughout. Because the same coordinated team that won the permission carries the scheme through structure, services, fire and building safety, the project moves from a planning permission to a compliant, sign-off-ready building without the design having to be reinvented.

The cost of designing and gaining permission for a Lewisham block of flats depends on the size and complexity of the scheme, and it is best understood in layers. Our design fees cover the architecture, structural engineering and building-services design and the management of the application; on a block of flats these are typically a percentage of the construction cost or a staged fixed fee, scoped to the specific scheme, and we set them out clearly before any work begins. We also coordinate the specialist reports a major application needs — transport, energy, ecology, arboriculture, daylight/sunlight, flood risk, acoustics, heritage and viability — each of which is a separate consultant cost we scope and manage for you.

Then there are the statutory costs of development, which are substantial on an apartment scheme and have to be in the appraisal from the start: the council's planning application fee (charged per additional dwelling, so it scales with the number of homes); the Community Infrastructure Levy, being both the Mayoral CIL and the Lewisham CIL charged per square metre of net additional floorspace; the Section 106 obligations, including the affordable housing and any carbon-offset and infrastructure payments; and the fees of the building-control body or, for a higher-risk building, the Building Safety Regulator. The single largest cost, of course, is the construction itself, and a block of flats — with piled foundations, a concrete or steel frame, cores, lifts, cladding, low-carbon services and fire-safety systems — is an expensive building type per square metre.

On timescales, feasibility and concept design typically take several weeks; pre-application dialogue and design review, where used, add a few weeks to a few months on a major scheme; the planning application runs against the eight-week (minor) or thirteen-week (major) target from validation but, on a significant apartment scheme, realistically takes several months to a year including committee and the Section 106; and the technical design, gateway approvals and construction follow. We give you a realistic programme for your specific scheme at the outset, because on a block of flats the biggest financial risk is not the design fee but the abortive cost of a scheme that is designed without regard to density, affordable housing, viability or fire safety and then has to be reworked or is refused.

The most cost-effective way to build a block of flats in Lewisham is to get the fundamentals right first time: a site tested honestly for its real capacity, an affordable-housing position that is viable, homes designed to the space standards, a structure and services that are coordinated and buildable, and a fire and building-safety strategy designed in from the start. Money is lost on refusals, on unviable schemes and on buildings that have to be redesigned once the engineers and the fire strategy catch up with the planning drawing — not on doing the design properly at the outset.

Understanding why apartment schemes fail is the best way to make sure yours does not. The most common reason on any scale is overdevelopment: a building that is too tall, too bulky or too dense for its site and context, that harms the character of the area, that overshadows or overlooks neighbours, or that provides cramped amenity because it has maximised rather than optimised the site. Height and massing out of keeping with the surroundings — particularly a tall building proposed outside a designated tall-building location or in or near a conservation area — is a frequent and fundamental ground for refusal.

Affordable housing is the other big-ticket reason on major schemes. A proposal that offers less affordable housing than the council considers viable — especially one that seeks to justify a low offer through a viability assessment the council does not accept — can be refused or stall in negotiation, because Lewisham holds firmly to its affordable ambition. Getting the tenure wrong, proposing off-site payment where on-site delivery is expected, or segregating the affordable homes are all problems too.

Then there are the quality and technical grounds: homes that fall below the national space standards or the London Plan requirements on ceiling height, aspect, daylight or amenity space; an unacceptable impact on the daylight and sunlight of neighbours; inadequate or poorly designed amenity, play space, cycle or refuse provision; an unresolved fire-safety or building-safety strategy (increasingly decisive since Grenfell, particularly where a scheme approaching 18 metres has not designed in a second staircase); unmanaged flood risk or an inadequate drainage strategy; loss of trees or biodiversity; harm to a heritage asset; and transport or highway-safety concerns. Any one of these can sink an otherwise attractive scheme.

Our approach is to anticipate every one of these reasons and answer it in the design and the application itself. We test the site honestly for its real capacity, fix a viable affordable-housing position, design every home to the standards, resolve the fire, structural, drainage and building-safety strategy up front, and prepare a coordinated, evidence-backed application. Where a site or a scheme has a genuine weakness, we tell you at feasibility rather than take you into an application designed to fail — because on a block of flats a refusal is a very expensive way to learn a lesson.

To make the process concrete, consider a common Lewisham scenario: a former commercial yard on a brownfield plot in Deptford, a few minutes from Deptford or New Cross stations and within the borough's northern regeneration area, that an owner wants to redevelop into a new block of flats. It is exactly the kind of well-connected, previously developed site the borough's strategy favours — and exactly the kind of scheme that has to satisfy density, affordable-housing, quality and fire-safety tests all at once.

At feasibility we survey the site, investigate the ground (soft, made ground with contamination and a high water table, given the industrial history near the creek — pointing to piled foundations and a remediation strategy), and test the massing. The design-led approach gives us a form that responds to the surrounding scale, protects daylight and sunlight to neighbours, and optimises rather than maximises the plot — say a five- to seven-storey block stepping down towards the lower-rise neighbours, which keeps it below the 18-metre second-staircase and higher-risk-building thresholds and simplifies the fire and building-safety route, or a taller element if the location genuinely supports it. We test the unit mix against the space standards and lay out compliant homes with private balconies, and we model the affordable-housing position: a scheme that meets the 35% fast-track threshold in the 70/30 tenure split avoids a full viability battle, so we test whether the scheme stacks up at that level.

The structure, services and fire strategy are designed alongside the plan. Piled foundations carry the frame down to competent ground; a reinforced-concrete frame provides the stability cores, the acoustic separation between homes and the fire compartmentation; the cores house the fire-protected escape stair (with a second staircase if the height requires it), the lift and the risers. Heating is by air-source heat pumps or a low-carbon heat network to meet the Future Homes Standard — no gas boiler — with MVHR in every home, solar PV on the roof, and the plant space and roof area planned for all of it. Surface water is managed through a green roof, permeable surfaces and an underground attenuation tank discharging at a controlled rate, with a flood risk assessment given the creek, and a build-over agreement where the building sits near the public sewer.

On the planning side we prepare the full package: existing and proposed drawings with every home's area and amenity annotated, and the suite of statements — design and access, planning, affordable housing, energy and sustainability, transport and travel plan, flood risk and drainage, daylight/sunlight, ecology and biodiversity net gain, arboriculture, a fire statement, and a construction management plan. We take the scheme to pre-application (and design review, on a scheme of scale) to secure an early steer on height, density and affordable housing, then submit through the Planning Portal and manage it through validation, consultation and — as a major scheme — committee, with the Section 106 securing the affordable housing and the carbon-offset payment completed before permission issues.

Once permission and conditions are dealt with, the same coordinated team takes the scheme through the Building Regulations, the Building Safety Regulator's gateways where the building is higher-risk, and the construction information the contractor needs. Because the density, the affordable housing, the space standards, the structure, the services, the energy strategy and the fire safety were all designed in from the first sketch, the scheme goes in as a proposal the case officer can recommend and comes out as a building the Regulator can approve — the difference between a block of flats designed to succeed and one simply hoped through.

It helps to understand why Lewisham is such an active market for new blocks of flats, because the housing need they meet is part of the planning story the council recognises. The borough's excellent and improving transport — National Rail to London Bridge, Cannon Street and Charing Cross, the DLR at Deptford Bridge, Elverson Road and Lewisham, and the Overground through New Cross, Brockley and Forest Hill — makes it a natural home for first-time buyers, young professionals, key workers and small households priced out of the boroughs closer to the centre. A new one- or two-bedroom flat near a station is, for many, the affordable route into home ownership or a settled rented home in inner south-east London, and that demand is structural rather than a passing fad.

That demand, combined with a supply of previously developed land in and around regenerating town centres, is why Lewisham has become one of the busiest apartment-building boroughs in London. Prices that undercut Greenwich and the inner boroughs, ongoing regeneration around Lewisham, Deptford, New Cross and Catford, and the borough's own ambitious housing target — some 30,376 homes over fifteen years — all point in the same direction: a great many of the homes Lewisham needs will be flats in new blocks, and the council actively wants them built. The flip side is the council's insistence that those flats deliver genuinely affordable housing and real quality, which is the tension every scheme has to resolve.

For your scheme, the point is that a well-designed block of flats meets a genuine housing need the council's own policies acknowledge: additional homes, including affordable homes, in sustainable, well-connected locations. A scheme that adds those homes at a proper standard, delivers real affordable housing, respects its neighbours and enhances the street is contributing directly to the borough's housing supply — and framing the proposal in those terms, honestly and with evidence, is part of building a persuasive planning case rather than presenting the development merely as an intrusion.

The market rewards quality, too. Well-designed, well-built Lewisham apartments — with good light, real amenity, low running costs from a low-carbon energy strategy, and a building residents feel safe in — sell and let quickly and hold their value, while poorly conceived schemes with cramped homes and mean amenity struggle. Designing to a proper standard therefore serves the investment as much as the planning case, which is why we treat the council's standards as the design brief rather than as obstacles to be minimised.

A grant of permission for a block of flats rarely comes without conditions, and on a major scheme there can be many. Common conditions require details to be submitted and approved before work starts or before occupation: materials and finishes, the landscape and amenity design, the drainage and SuDS scheme, the remediation of any contamination, the cycle and refuse stores, a construction management plan, the energy and renewables details, ecological mitigation and biodiversity net gain, and the fire-safety and building-safety information. Each of these 'pre-commencement' or 'pre-occupation' conditions is discharged by a short further application, and failing to comply can put the lawful use of the finished homes at risk — so we flag the onerous conditions when the decision arrives and prepare the discharge submissions so the scheme can proceed and complete without delay.

The Section 106 obligations sit alongside the conditions and continue to bite through the life of the scheme: the affordable-housing provision and its tenure, the review mechanisms that can require more affordable homes if the scheme outperforms, the carbon-offset payment, and the various contributions and works. These are legal obligations on the land, and managing their triggers and payments is part of delivering the scheme properly.

Not every application is approved first time, and a refusal is not necessarily the end of the road. When Lewisham refuses, it must give its reasons, and those reasons are the roadmap for what happens next. Where the refusal turns on design and detail — massing, unit sizes, amenity, daylight, drainage or a specific impact — the sensible route is often to revise the scheme to overcome the objections and resubmit, and Lewisham, like most authorities, allows a 'free go' resubmission of a similar application within a set period after a refusal. Where the refusal turns on a point of principle we consider wrong, the route is an appeal to the Planning Inspectorate, which takes longer and requires a properly argued case on national policy, the development plan and appeal precedent, but which can and does succeed against an unreasonable refusal.

The best defence against a refusal is, of course, an application designed not to be refused — which is why we invest so heavily in feasibility, pre-application dialogue and answering the council's tests up front. But if a refusal does come, we give you a straight assessment of whether to revise and resubmit or to appeal, and prepare whichever route gives the scheme its best prospects.

Crown Architecture prepares new-build block-of-flats schemes across Lewisham and the surrounding boroughs, and we do it as a single coordinated service: the architecture, the structural engineering and the building services under one roof. That integration matters more on an apartment building than on almost any other project type, because the density, the internal layout, the structural frame, the cores, the escape stairs, the services risers, the energy strategy and the fire safety are completely interdependent. Design them in separate silos and they clash; design them together, and the scheme that wins permission is the scheme that can actually be built.

We know the Lewisham regime: the Local Plan 2020-2040 adopted in July 2025, the borough's ambitious housing target, the design-led approach to density and the borough's height and tall-buildings expectations, the 50% affordable-housing target and Policy HO3 with its 35% fast-track threshold and 70/30 tenure split, the space and design standards, the CIL and Section 106 obligations, and the fire-safety and building-safety regime that now governs apartment buildings. We use that knowledge to give you honest advice at feasibility and to build applications designed to pass.

Just as importantly, we are straightforward to work with. We tell you early what your site can realistically carry, whether the affordable-housing position is viable, and what the scheme will cost to deliver, before you commit; we scope clear fees; and we prepare a coordinated, self-consistent application that a case officer can recommend without having to fill in the gaps. Then, once permission is granted, we carry the scheme through the structural, services, fire and building-safety design — including the Building Safety Regulator's gateways where the building is higher-risk — so the same team that won the permission delivers the information your builder needs.

We also stay with the project through its life: managing the application through Lewisham's validation, consultation and committee, negotiating the Section 106, discharging conditions, and preparing the construction information. The aim is a single, accountable point of contact from the first survey to a buildable, sign-off-ready building, rather than a set of drawings handed over and a client left to navigate the council, the GLA and the Regulator alone.

If you are considering building a block of flats in Lewisham — whether it is an infill plot for a handful of homes or a larger site in a regeneration area — send us the address and what you have in mind, and we will tell you honestly what is achievable and how to get there.