Change of Use to an HMO in Croydon

In planning law, every building has a 'use class' that describes what it is used for. An ordinary home — occupied by a single household, whether that is a family, a couple, or a single person, and including a household with up to two lodgers — sits in Use Class C3, the dwellinghouse class. A house in multiple occupation is different: it is a home shared by people who are not one household, who each rent a room and share facilities such as the kitchen or bathroom.

The law then splits HMOs in two. A small HMO occupied by between three and six unrelated people who share basic amenities is Use Class C4. A large HMO — seven or more sharers — has no use class of its own; it is what planners call 'sui generis', meaning 'of its own kind', and it has always needed planning permission to create. So the journey most Croydon landlords are making is from C3 (a house) to C4 (a small HMO), and sometimes on to a sui generis large HMO.

Nationally, the change from C3 to C4 is usually 'permitted development' — a change you can make without a planning application, because the government has granted a blanket right to do it. That right is exactly what an Article 4 Direction can switch off. And in Croydon, the council has switched it off everywhere. This is why 'change of use to an HMO in Croydon' is a genuine planning project rather than a paperwork formality: the borough has deliberately taken back control of these conversions.

It is worth being precise about the threshold, because it decides everything that follows. Three sharers who are not a single household is the point at which a house becomes a C4 HMO. Below that — for example, a couple with a single lodger, or two friends sharing — you are generally still within C3 and outside HMO planning control, although licensing and safety rules can still apply. Getting the classification right at the outset is the first thing we check on any Croydon instruction, because it determines whether you need permission at all and, if you do, which route applies.

An Article 4 Direction is a formal decision by a council to withdraw specified permitted development rights in a defined area. It does not ban anything; it simply means the change now requires a planning application, so the council can assess each proposal on its merits. Croydon made a borough-wide, non-immediate Article 4 Direction removing the permitted development right to change a C3 dwellinghouse into a C4 small HMO, and it came into force on 28 January 2020.

The word 'borough-wide' matters. Many London boroughs apply Article 4 HMO directions only to particular wards or zones; Croydon applied its direction across the entire local authority area. Wherever your property sits in the borough — Selhurst, Thornton Heath, South Norwood, West Croydon, Broad Green, Addiscombe, Norbury, Coulsdon, Purley or anywhere else — the same rule applies: a change of use from a house to a small HMO needs planning permission.

The council's stated reason is the protection of family housing. Croydon reported losing more than 900 family homes to HMO and similar conversions over roughly a decade, at a time of acute pressure on family-sized accommodation and on people's ability to buy a home in the borough. The Article 4 Direction is the mechanism that lets the council weigh each further loss of a family house against that wider housing need, rather than seeing conversions happen automatically and invisibly.

For an owner or investor, the practical consequence is simple but significant. You cannot lawfully begin operating a new small HMO in Croydon on the assumption that it is permitted development, because that right has been removed. Doing so risks enforcement action and makes the property very difficult to license, refinance or sell. The correct order is: secure planning permission for the change of use first, then license and let. Everything on this page is geared to getting that first step right.

It is also worth understanding what an Article 4 Direction is not. It does not expire on its own, it is not a ban, and it does not mean HMOs are unwelcome in Croydon — the borough continues to grant HMO permissions where the scheme is right for the property and the location. What it does is restore the council's ability to say yes or no on the planning merits, case by case, instead of conversions happening automatically. That is why a well-designed, well-argued application matters so much here: the decision is genuinely open, and it turns on the quality of what you put in front of the council.

Croydon's HMO story is really the story of its transport and its town centre. East Croydon is one of the busiest interchanges in the south of England, with fast and frequent trains to London Bridge, Victoria, the City via Thameslink, Gatwick, Brighton and the south coast. That connectivity made the borough a natural home for commuters and young professionals who wanted London access at a lower rent than the inner boroughs — exactly the demand that shared houses are built to meet.

At the same time, Croydon grew in the twentieth century as a commercial centre in its own right. The rise of office towers around the town centre and, in the 1960s, the Whitgift Centre — for decades the largest shopping centre in Greater London — brought a large working population into the borough. Waves of regeneration, and more recently major residential and town-centre schemes, kept a steady flow of workers, students and new arrivals looking for affordable, flexible, room-by-room accommodation.

The borough's housing stock did the rest. Croydon has street after street of substantial Victorian and Edwardian terraces and semis, especially in areas like Selhurst, Thornton Heath, South Norwood, Broad Green and West Croydon. These houses often have three, four or five bedrooms, generous floor-to-ceiling heights and long rear gardens — the kind of building that converts readily into a well-proportioned HMO. For a generation of landlords, they were the obvious raw material.

The combination of strong tenant demand and convertible housing meant conversions accelerated — and it was precisely that acceleration, and the loss of family homes it caused, that led the council to act. The 2020 Article 4 Direction is the direct result of Croydon's own success as an HMO market: the borough decided that the pace of conversion needed to be managed through the planning system rather than left to run automatically. Understanding that history helps you understand the council's mindset when it assesses your application today.

Croydon is an ancient place with a surprisingly deep history for somewhere so associated with modern towers and transport. It began as a Saxon settlement, and for centuries it was closely tied to the Archbishops of Canterbury, who kept a residence here — the surviving Old Palace, near Croydon Minster, was their summer home. The Minster and the streets of the Old Town remain the historic heart of the borough, protected today within the Church Street Conservation Area, which contains listed and locally listed buildings dating from the early eighteenth century onwards.

Just north of the Old Town runs Surrey Street, home to one of the oldest street markets in Britain. Surrey Street Market has been trading since 1276, when a market charter was granted to the town by Robert Kilwardby, Archbishop of Canterbury, with further charters in the fourteenth century. After the town-centre clearances of 1893 pushed street trading into Surrey Street, and after Croydon Corporation took the market over and relaunched it as a six-day market in 1922, it has traded continuously ever since. It sits within the Central Croydon Conservation Area, which protects Surrey Street and the small streets around it.

Around this historic core, the borough is remarkably varied. The town centre is dominated by twentieth-century commercial architecture and the Whitgift Centre; East Croydon is a national rail hub; and beyond the centre the borough opens out into the leafier, lower-density suburbs of Purley, Coulsdon, Sanderstead and Shirley to the south, and the denser Victorian and Edwardian streets of the north. This range — historic conservation areas, mid-century town-centre blocks, and mile upon mile of period terraces — is exactly why HMO proposals in Croydon have to be judged property by property.

For an HMO project, this context is not just colour; it is planning-relevant. A conversion within or adjoining a conservation area, or affecting a listed or locally listed building, faces additional design and heritage tests. A conversion of a standard Victorian terrace in Thornton Heath faces different considerations again — amenity, parking pressure, and the concentration of existing HMOs in the street. Knowing where your property sits in Croydon's map, and its history, is the starting point for a credible application.

The classic Croydon HMO is a Victorian or Edwardian terrace or semi in the north of the borough. These houses typically offer three to five bedrooms across two or three storeys, often with a rear addition (the 'back addition' or outrigger) housing the original kitchen and bathroom, and a cellar in some cases. Their scale is what makes them work as shared houses: there is enough floor area to create good-sized bedrooms while still providing a proper shared kitchen and adequate bathrooms.

A well-designed conversion usually keeps the principal rooms as bedrooms, reconfigures the rear addition and ground floor to provide a generous shared kitchen-diner, and adds bathrooms so that the ratio of occupants to facilities is comfortable. Loft space is frequently brought into use, and rear or side ground-floor space is sometimes extended to give the shared living space it needs. Each of these moves has planning and building-regulations implications that need to be designed in from the start, not bolted on.

Larger detached houses and former commercial or institutional buildings in Croydon can also make good HMOs, particularly for sui generis (seven-plus) schemes, though these bring their own complexity around fire strategy, means of escape and management. Smaller two-bedroom terraces, by contrast, rarely make good HMOs: once you provide the shared amenities Croydon expects, there is little room left for enough lettable bedrooms to make the scheme viable, and the council is likely to resist the loss of a genuinely family-sized small home.

Whatever the building, the design has to reconcile two things that pull in opposite directions: the landlord's wish to maximise lettable rooms, and Croydon's insistence on proper room sizes, amenity and living space. The schemes that gain permission are the ones that treat the council's standards as the design brief rather than as obstacles — and that is precisely how we approach every Croydon HMO we draw.

For a small HMO (three to six sharers, Use Class C4), the answer in Croydon is almost always yes. Because of the borough-wide Article 4 Direction, the permitted development right that would normally let you change a house to a small HMO without applying has been removed across the whole borough. You therefore need to apply for planning permission for the change of use, and the council will assess it against its Local Plan.

For a large HMO (seven or more sharers, sui generis), the answer is also yes, and always has been — a sui generis use has never been permitted development, so a planning application has always been required to create one, Article 4 or not. If your scheme grows from a C4 to a large HMO, that is a further change of use needing its own permission.

There are limited situations where planning permission may not be needed — for example, where a property was already lawfully in HMO use before the relevant use came into effect, or where the number and relationship of occupants keeps it within Class C3 (such as a household with a lodger or two). Establishing an existing lawful use can be done through a Certificate of Lawfulness, which is a separate application supported by evidence. We assess this at the outset, because if a lawful HMO use already exists it can change the whole strategy.

The safe assumption for any new small or large HMO in Croydon is that you need planning permission before you begin. Operating first and applying later — or not applying at all — exposes you to enforcement, complicates HMO licensing (the council considers planning status when it licenses), and damages the property's value and saleability. We always advise securing the change-of-use permission first.

A Croydon HMO application is judged against the borough's Local Plan, and knowing which policies apply lets us build the application around them rather than hoping to satisfy them by accident. Several policies routinely come into play on HMO change-of-use schemes.

Strategic housing policy (in the SP2 group) sets Croydon's overall approach to housing supply and mix, including its concern to protect family-sized homes — the very concern that produced the Article 4 Direction. Housing choice and quality policy (the DM1 group) deals with standards for new residential accommodation, including HMOs, and with resisting the loss of family housing where that would harm the borough's housing mix. This is often the heart of the planning balance in an HMO case.

Design and amenity policy (the DM10 group) governs the impact of the proposal on the living conditions of existing and future occupiers and neighbours — daylight, outlook, privacy, noise and general residential amenity. Refuse and recycling storage (DM13) and drainage (DM25) have their own requirements, as do ecology and trees (DM27) where a garden or planting is affected. Transport and parking policy (the SP8/DM29/DM30 group) covers car and cycle parking and the transport impact of intensifying the use of a house — a live issue in streets already under parking pressure.

Croydon also has supplementary planning guidance for HMOs, first published in March 2016, which sits alongside the Local Plan and sets out the council's detailed expectations for the design and standard of HMO accommodation. Taken together, these documents form the test your application must pass. Our job is to design a scheme, and write the supporting statements, that demonstrate compliance policy by policy — so the case officer can recommend approval without having to fill gaps themselves.

Croydon expects HMO accommodation to reach a genuine standard of living, and its planning and housing standards are more demanding than the bare legal minimum. On room sizes, the national minimum sleeping-room area for HMO licensing is 6.51 square metres for one adult, but Croydon's planning standards look for larger rooms — around 10 square metres for a single bedroom where the occupant shares a kitchen — so that bedrooms function as proper living-and-sleeping spaces rather than just somewhere to put a bed. Double rooms are expected to be larger again.

Amenity provision is assessed by ratio: there must be enough kitchen facilities, bathrooms and WCs for the number of occupants, so that a shared house of five or six people is not trying to function with a single bathroom and a token kitchenette. The shared kitchen and any communal living space must be genuinely usable, with adequate worktop, storage, cooking and dining provision. Croydon's HMO standards also address ventilation, natural light, heating and general fitness of the accommodation.

Beyond the rooms themselves, the council looks at the supporting arrangements: secure, weatherproof storage for refuse and recycling that does not blight the street or the front garden (a DM13 requirement), cycle parking for occupants who will overwhelmingly be car-light commuters, and safe, code-compliant heating, electrics and drainage sized for a more intensively occupied building. These are not afterthoughts — inadequate bin or cycle storage is a genuinely common reason for HMO schemes to run into difficulty.

We design to these standards from the first sketch. That means testing the building's real dimensions against Croydon's room sizes, laying out amenities to the right ratios, and finding proper, designed locations for bins and bikes — then showing all of it clearly on the drawings so the council can see, at a glance, that the scheme meets its expectations. A layout that quietly falls short on room sizes or amenities is the quickest way to a refusal.

Planning permission and HMO licensing are two different things, run by two different parts of the council, and you generally need both. Planning permission deals with the change of use — whether the building may be used as an HMO at all. Licensing deals with how the HMO is operated and managed once it exists — safety, amenities, management standards and the fitness of the person running it. Satisfying one does not satisfy the other.

Mandatory HMO licensing applies across England to larger, higher-occupancy HMOs (broadly those occupied by five or more people forming two or more households). Many councils, Croydon included, also operate additional or wider licensing that brings smaller HMOs into scope. Whichever licensing regime applies to your property, it is separate from — and additional to — the planning permission for the change of use.

Crucially in Croydon, the two regimes are linked in practice. The council has made clear that when it receives an HMO licence application it will take the property's planning status into account, and expects the correct planning permission to be in place. In other words, trying to license an HMO that does not have — and, post-Article 4, needs — planning permission for its change of use is likely to run into trouble. The clean route is planning first, licence second.

We focus on the planning side — securing the change of use — but we design the scheme so that it will also satisfy the licensing standards, because the two overlap heavily on room sizes, amenities and fire safety. Getting a layout approved at planning that then fails licensing helps nobody, so we draw to the higher of the two standards throughout.

Once an HMO is occupied by seven or more sharers, it steps outside Use Class C4 and becomes sui generis — a use in a class of its own. Creating a large HMO in Croydon has always required planning permission, independent of the Article 4 Direction, and it is assessed more searchingly than a small HMO because of its greater intensity of use and its impact on neighbours and the street.

The design challenges scale up accordingly. A larger HMO needs a more developed fire strategy and means of escape, more generous and better-arranged amenities, more robust management arrangements, and careful attention to noise, refuse and comings-and-goings. The building has to be genuinely suitable — many standard terraces that make a comfortable five- or six-bed C4 simply cannot accommodate a good seven-plus scheme without compromising room sizes or escape routes.

Croydon will also weigh the cumulative impact: a large HMO in a street that already has a concentration of shared houses raises questions about the balance of the community and the character of the area, which the council can and does take into account. Where concentration is an issue, the planning case has to work harder, and honest advice at the outset about whether a large HMO is realistic on a given property saves wasted time and fees.

For the right building — often a large detached or semi-detached house, or a suitable former commercial or institutional property — a sui generis HMO can be an excellent scheme. We assess suitability early, design the fire strategy and amenities to the higher standard a large HMO demands, and prepare the fuller planning case these applications need.

Fire safety is central to any HMO, and it runs on a separate but parallel track to planning: the change-of-use permission lets you use the building as an HMO, while the Building Regulations — principally Part B — govern how it must be built and protected. On an HMO conversion the two have to be designed together, because the fire strategy shapes the layout, and the layout shapes the planning application.

A shared house needs a protected route of escape — typically a fire-protected staircase and hallway that lets every occupant get out safely — served by an interlinked fire alarm system of the appropriate grade and category, fire doors to habitable rooms, and suitable compartmentation between rooms and floors. On larger or taller HMOs the requirements increase, and additional measures may be needed. Getting the escape strategy right often determines where partitions, doors and even bedrooms can go.

Because fire safety and licensing standards overlap so heavily, designing the fire strategy properly at the drawing stage also smooths the later licensing process. It is far cheaper to resolve escape routes, door positions and compartmentation on paper than to discover during a licensing inspection that a layout does not work and has to be rebuilt.

We prepare the HMO layout with the fire strategy built in, and coordinate with a fire specialist where a scheme's scale or complexity calls for it, so that the drawings you submit to Croydon are consistent with a building that can actually be signed off and licensed. This is also where the structural and building-regulations design of the conversion meets the planning design — which is the subject of the next section.

Turning a family house into an HMO is rarely just a matter of putting locks on bedroom doors. To reach Croydon's room sizes and amenity standards, most conversions involve real construction — and that means real structural design. Crown handles the architecture, the structure and the building services together, so the drawings you submit are not just a planning layout but a buildable, coordinated scheme.

The most common structural elements are new or altered openings — forming doorways, widening the ground floor to create a proper shared kitchen-diner, or removing a chimney breast — each of which needs a correctly sized steel beam or lintel with supporting calculations and, where a party wall is affected, the right notices. Bringing a loft into use as bedrooms usually needs the floor structure upgrading to take residential loads and the roof altering, again with structural design and Building Regulations approval.

Sound insulation is a particular focus in HMOs: because unrelated people are living close together, Building Regulations and good practice call for improved separation between rooms and floors (the Part E family of requirements), which affects floor build-ups and partition construction. Fire compartmentation, discussed above, also has a structural dimension — protected floors and walls have to actually achieve their fire resistance. And the more intensive use means heating, hot water, electrics and drainage frequently need upsizing, which the building-services design has to address.

By designing the layout, the structure and the services as one package, we avoid the classic HMO conversion problem: a planning drawing that looks fine but cannot be built as drawn once the beams, escape routes and services are worked out. It also means that when you go to site, your builder, structural engineer and the building-control body are all working from one coordinated set of information — which is faster, cheaper and far less prone to costly surprises.

Some HMO applications in Croydon fail not on the principle of the conversion but on the practical details, so it is worth understanding the tests that most often catch schemes out. The first is neighbour and occupier amenity (DM10): the council looks at whether the intensified use will materially harm neighbours' living conditions through noise and disturbance, and whether the future occupants themselves will have adequate light, outlook, privacy and space. A cramped scheme with token rooms fails this test even if the numbers technically fit.

The second is refuse and recycling (DM13). An HMO generates more waste than a single household, and Croydon expects properly sized, accessible, screened bin and recycling storage that does not end up as bags dumped in the front garden. This sounds minor but is a recurring reason for objections and refusals, and it is entirely avoidable with a designed bin store shown clearly on the plans.

The third is parking and transport (SP8/DM29/DM30). In streets already under parking pressure, the council is concerned about the extra demand a shared house of five or six adults can create. The answer is usually to lean on Croydon's genuinely excellent public transport — most HMO occupants here are car-light commuters using East Croydon and the tram network — and to provide good, secure cycle parking, while making an honest case about car ownership and controlled-parking-zone coverage where relevant.

None of these tests is insurmountable, but each has sunk applications that ignored it. We design the scheme so that amenity, refuse and cycle/parking are answered on the drawings and in the planning statement from the outset, rather than left for the case officer to raise as objections halfway through.

A Croydon HMO change-of-use application has to tell the council two stories clearly: what the building is now, and what it will become. We prepare a full, measured set of drawings and the supporting documents that carry the planning argument, so the application is complete, consistent and easy to assess.

The drawing package normally includes an accurate measured survey of the existing property, existing plans and elevations, and then the proposed plans and elevations showing the HMO layout — bedrooms with their areas noted, the shared kitchen and living space, bathrooms and WCs, the fire escape strategy, and the refuse and cycle storage. Room areas are annotated so the council can check them against its standards without having to scale off the drawing. A location plan and site plan complete the set.

Alongside the drawings we prepare the supporting documents the application needs: a planning statement setting out how the scheme meets Croydon's Local Plan policies and addresses the family-housing, amenity, parking and design tests; and, depending on the property, any heritage, transport or other statements the specific site calls for. Where structural work is involved, the building-regulations and structural design follow so the scheme can move smoothly to construction.

Everything is prepared to be internally consistent — the room sizes on the plans match the areas quoted in the statement, the fire strategy matches the layout, the bin and cycle stores appear on both the plans and the text. A coordinated, self-consistent application is materially more likely to be approved than a set of drawings and a statement that contradict each other.

The process starts with feasibility. We survey the property, confirm its planning history and use class, check whether any lawful HMO use already exists, and test the building against Croydon's standards to see what scheme it can realistically support. This is where we give you an honest view of whether the project is likely to succeed, and at what occupancy, before you spend money on a full application.

Croydon offers pre-application advice, and on HMO schemes it is often worth using: a written steer from the council on your proposal reduces the risk of a refusal and can flag concerns early, while showing the eventual case officer that the scheme has been developed thoughtfully. We prepare and manage the pre-application submission where it adds value.

We then prepare the full drawing package and supporting statements, submit the application to Croydon through the Planning Portal, and manage it through validation and determination — responding to the case officer's queries, providing additional information, and negotiating amendments where that will secure approval. Most householder-scale change-of-use applications run against an eight-week target from validation, though HMO cases can take longer if they are complex or attract objections.

Once permission is granted, we can take the scheme forward into the building-regulations and construction drawings, so the same coordinated team that won the permission also delivers the information your builder needs on site. And because we design with licensing in mind throughout, the finished HMO is set up to pass the separate licensing process too.

Understanding why applications fail is the best way to make sure yours does not. The most fundamental reason for refusal in Croydon is the loss of a family-sized home where the council judges that harm to the borough's housing mix outweighs the benefit of the HMO — the very concern behind the Article 4 Direction. This is most acute where the property is a genuinely family-suitable house and where family housing is under particular pressure.

Concentration is the second big theme. Where a street or area already has a high proportion of HMOs, the council can refuse a further conversion on the grounds that it would tip the balance of the community, harm the character of the area, or add to cumulative problems with parking, refuse and noise. Some councils apply percentage thresholds for HMO concentration; even where a rigid threshold is not applied, concentration is a material consideration in Croydon.

The remaining refusal reasons are the practical ones already discussed: substandard room sizes or amenities, inadequate fire escape arrangements, poor or absent refuse and cycle storage, and unacceptable amenity impacts on neighbours through noise, overlooking or general intensification. Each of these is a design failing, and each is avoidable with a properly designed scheme.

Our approach is to anticipate every one of these reasons and answer it in the application itself. We are honest with you at feasibility if a property is likely to hit the loss-of-family-housing or concentration objections, because there is no value in submitting an application that is designed to fail — better to know early and, where possible, adjust the scheme.

The Article 4 Direction does not make a Croydon HMO impossible — it makes it a matter of planning judgement, and a well-made case can and does succeed. The goal is to present a scheme that the council can approve consistent with its own policies, and to do the council's assessment for it, clearly and honestly, in the application.

That starts with choosing the right property and the right occupancy. A conversion that provides good-sized rooms and genuine amenities for a sensible number of sharers, in a building that is not obviously a scarce family home, in a street that is not already saturated with HMOs, is far more defensible than an over-intensive scheme in a sensitive location. Much of the battle is won at feasibility, by being realistic about what a given property should support.

The written case then draws out the positives that Croydon's policies recognise: the contribution the HMO makes to the borough's supply of affordable, flexible accommodation for the commuters and workers the town depends on; the high-quality standard of the accommodation proposed; the sustainable, car-light location near East Croydon and the tram network; and the careful design response on amenity, refuse and parking. Where concentration or family-housing loss is a concern, the statement addresses it directly with evidence rather than ignoring it.

This is skilled work, and it is where design and planning knowledge earn their keep. We prepare the scheme and the statement so that the change of use is presented as a well-considered, policy-compliant proposal — giving your application the best possible chance under a genuinely restrictive local regime.

The cost of a Croydon HMO change of use depends on the size and complexity of the property and how much of the full package you need — from a straightforward small-HMO change of use on a standard terrace, through to a large sui generis scheme with significant structural work, a full fire strategy and building-services upgrades. We scope the work to your specific project and give you a clear, fixed fee for our part before any drawing work begins.

Separate from our fee, you should budget for the council's planning application fee, which is set nationally and payable to Croydon on submission, and for any pre-application advice fee if you choose to use that service. If structural work is involved there will be structural design and building-control costs, and any HMO licence carries its own fee to the council's licensing team. We set all of this out at the start so there are no surprises.

On timescales, feasibility and drawings typically take a couple of weeks once we have access to survey the property, pre-application advice (if used) adds a few weeks, and the planning application itself runs against an eight-week target from validation, sometimes longer for complex or contested HMO cases. We give you a realistic programme for your specific scheme at the outset.

It is worth remembering that good design and a well-argued application are not where money is lost on HMO projects — money is lost on refusals, enforcement, and buildings that cannot be licensed. Getting the change of use right first time, to a standard that also satisfies licensing, is the most cost-effective way to bring a Croydon HMO into use.

To make the process concrete, consider a common Croydon scenario: a three-storey Victorian mid-terrace in Selhurst, a ten-minute walk from Selhurst and Norwood Junction stations, that an investor wants to run as a five-bedroom HMO for five sharers. It is exactly the kind of property the borough's HMO market is built on — well-connected, solidly built, and generously proportioned — and exactly the kind of change of use the Article 4 Direction now brings under planning control.

At feasibility, we survey the house and test it against Croydon's standards. The two principal first-floor rooms and the large ground-floor front room become good double bedrooms; the rear addition and back of the ground floor are reworked into a proper shared kitchen-diner opening to the garden; and the loft is converted to provide the fourth and fifth bedrooms with an added shower room. We check every proposed bedroom against Croydon's expectation of around ten square metres for a single sharing a kitchen, confirm the bathroom-to-occupant ratio works for five people, and identify locations for a screened bin store and secure cycle parking.

The construction and structural design follow from that layout. Opening up the ground floor for the kitchen-diner needs a steel beam with calculations; the loft conversion needs the floor upgrading to residential loading, a compliant stair, and a protected escape route running from the top floor down to the front door, with fire doors and interlinked alarms throughout. Sound insulation between the bedrooms and floors is improved to the appropriate standard, and the heating, hot water and electrics are upsized for five occupants. All of this is designed as one coordinated package so the planning layout is genuinely buildable.

On the planning side, we prepare existing and proposed drawings with every room area annotated, plus a planning statement that meets Croydon's Local Plan policies head-on: it demonstrates the room sizes and amenities, addresses neighbour amenity and the sustainable, car-light location by the stations, shows the designed refuse and cycle storage, and makes an honest case on housing mix and any HMO concentration in the immediate streets. Where the surrounding area is already HMO-heavy, we say so at feasibility and advise accordingly rather than submitting blind.

Submitted through the Planning Portal and managed through Croydon's validation and determination, a scheme like this runs against the eight-week target, and — because it is designed to the council's standards and argued against its policies — it goes in as a proposal the case officer can recommend for approval. Once permission and any conditions are dealt with, the same coordinated drawings carry the project into construction and set it up to pass HMO licensing. That is the difference between an HMO that is designed to succeed and one that is simply hoped through.

It helps to understand who actually lives in Croydon HMOs, because the tenant profile is part of the planning story the council recognises. The typical occupant is a working adult — often in their twenties or thirties — who commutes into central London or works locally, and who wants a room in a well-run shared house at a rent they can afford. For many, an HMO room near East Croydon is the difference between living within reach of their job and being priced out of the area entirely.

That demand is structural, not a fad. Croydon combines fast rail and tram links, a large local employment base in and around the town centre, and rents that undercut the inner boroughs. As long as those conditions hold, there will be strong demand for shared accommodation — which is exactly why the borough has such an active HMO market, and also why the council is careful to manage it so that the supply of family homes is not eroded in the process.

For your application, the point is that a good HMO meets a genuine housing need the council's own policies acknowledge: affordable, flexible accommodation for the workers the town depends on. A scheme that provides that need at a proper standard, in the right location, is contributing 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 HMO as simply a loss of a family home.

The flip side is that a poorly conceived HMO — cramped rooms, too many sharers, no thought for waste or bikes, in a street already saturated with shared houses — meets that need badly and hands the council every reason to refuse. The market rewards quality too: well-designed, well-managed Croydon HMOs let quickly and hold their tenants, so designing to a proper standard serves the investment as well as the planning case.

A grant of planning permission for an HMO change of use rarely comes without conditions, and it is worth knowing what to expect so they can be discharged smoothly rather than becoming a stumbling block later. Conditions are requirements attached to the permission that must be met, either before the use begins or on an ongoing basis, and failing to comply with them can put the lawful use of the HMO at risk.

On Croydon HMO permissions, common conditions include a cap on the maximum number of occupants or bedrooms (fixing the intensity of use the council has assessed and approved), a requirement to provide and permanently retain the refuse and recycling storage shown on the approved plans, and a requirement to provide the approved cycle parking before the HMO is occupied. Conditions may also secure the amenity or fire-safety measures that formed part of the approved scheme.

Some conditions require details to be submitted and approved before work starts or before occupation — for example, precise details of bin stores, cycle stores or materials. These are 'pre-commencement' or 'pre-occupation' conditions, and each is discharged by a short further application to the council providing the required information. We flag any onerous conditions when the decision arrives and can prepare the discharge submissions so the HMO can be brought into use without delay.

The practical message is that the permission is the beginning of a compliant HMO, not the whole of it: the conditions, the licence, and the building-regulations sign-off all have to line up. Because we design the scheme with all three in mind, the conditions Croydon attaches are generally ones the scheme already meets — which makes discharging them straightforward.

Not every application is approved first time, and a refusal is not necessarily the end of the road. When Croydon refuses an HMO change of use, it must give its reasons, and those reasons are the roadmap for what happens next. Sometimes the sensible response is to revise the scheme to overcome the objections and resubmit; sometimes, where the refusal turns on a point of planning judgement we consider wrong, the right route is an appeal to the Planning Inspectorate.

A revised application is often the faster and cheaper route where the reasons for refusal are about design and detail — room sizes, amenity, refuse or cycle storage, or a specific amenity impact — because those can be addressed by amending the scheme. Many authorities, Croydon included, allow a 'free go' resubmission of a similar application within a set period after a refusal, which we can use to submit an improved scheme without a further application fee.

An appeal is the route where the refusal turns on a matter of principle — for example, a disputed conclusion about loss of family housing or HMO concentration — that a revised scheme cannot resolve. Appeals take longer and require a properly argued case, drawing on national policy, the development plan and appeal precedent, but a well-founded appeal against an unreasonable refusal can and does succeed. Appeal decisions on HMO cases also help clarify how the policies are applied in practice.

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

Croydon is far from alone in controlling HMOs through Article 4. A large and growing number of London boroughs have introduced Article 4 Directions removing permitted development rights for C3-to-C4 conversions, some borough-wide and some in defined zones, precisely because they share Croydon's concern about the loss of family housing. For a landlord building a portfolio across south London, that means the rules can change from one borough to the next, and even from one part of a borough to another where a direction is zoned rather than borough-wide.

The practical lesson is never to assume that because a conversion was permitted development in one location it will be in another. Each property has to be checked against the specific direction and local plan of the authority that covers it. Croydon's direction is borough-wide, so within Croydon the position is at least consistent; but a portfolio that also reaches into neighbouring boroughs needs each address assessed on its own facts.

For investors, this patchwork is actually a reason to value good planning advice rather than to fear it. The boroughs that control HMOs most tightly are often the ones where demand is strongest and where a lawful, well-run HMO holds its value best, precisely because supply is constrained. Getting the planning right turns a regulatory hurdle into a durable asset; getting it wrong leaves you with a property that cannot be licensed, refinanced or easily sold.

We work with portfolio landlords as well as first-time converters, and we can assess a group of properties across Croydon and the surrounding boroughs, tell you honestly which are realistic HMO candidates and at what occupancy, and prioritise the applications that will deliver the best return for the least planning risk.

Crown Architecture prepares HMO change-of-use schemes across Croydon and the surrounding boroughs, and we do it as a single coordinated service: the planning design, the structural design and the building services under one roof. That matters on HMO conversions more than almost any other project type, because the planning layout, the fire escape strategy and the structural work are completely interdependent — design them separately and they clash.

We know the Croydon regime: the borough-wide Article 4 Direction, the Local Plan policies your application will be judged against, the HMO standards the council expects, and the practical tests — amenity, refuse, parking, concentration — that decide real applications. 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 whether a property will make a good HMO and at what occupancy, we quote a clear fixed fee, and we prepare a coordinated, self-consistent application that a case officer can approve without having to fill in the gaps. Then, once permission is granted, we can carry the scheme through to the construction information your builder needs.

We also stay with the project after the drawings are done. We manage the application through Croydon's validation and determination, respond to the case officer, negotiate amendments where that will secure approval, and — once permission is granted — help discharge the conditions and prepare the construction information. The aim is a single, accountable point of contact from the first survey to a licensable, buildable HMO, rather than a set of drawings handed over and a client left to navigate the council alone.

If you are considering an HMO in Croydon — whether it is a first conversion or an addition to an existing portfolio — send us the address and what you have in mind, and we will tell you honestly what is achievable and how to get there.