Local planning intelligence
Recent Planning Approvals in Three Rivers
Browse 41 recent planning approvals published by Three Rivers District Council. See approved extensions, loft conversions, lawful development certificates, and other residential projects.
Planning intelligence
Recent planning approvals in Three Rivers
This page presents recent planning approvals published by Three Rivers District Council for residential projects across Three Rivers. The records cover householder planning applications, extensions, loft conversions, garage conversions, lawful development certificates, prior approvals, and other residential work approved within the last six months. Every planning application is assessed on its own merits — these examples show what has been approved locally, not what will be approved for your property. Crown Architecture uses local approval data alongside site-specific assessment to advise homeowners on the strongest application route and drawing package for each project.
Data window
January 2026 – June 2026
Last updated
22 June 2026
Total approvals
41 records
Browse by type
Planning approval categories — Three Rivers
Jump to a specific project type to see relevant recent approvals.
Example planning & architectural drawings
Drawing examples relevant to Three Rivers projects
These anonymised plan sheets illustrate the type of existing/proposed floor plans, elevations, roof plans and 3D views Crown Architecture prepares for planning applications in Three Rivers. Every project drawing package is tailored to the property, the Three Rivers District Council requirements and the intended approval route.
Project imagery
Residential project context — Three Rivers
Additional drawing examples and residential context imagery for planning-approved project types in Three Rivers. Always check the public register for exact approved drawings.
Typical residential context for Three Rivers. Not the specific application.
Typical residential context for Three Rivers. Not the specific application.
Loft Conversions
Loft Conversion Approvals — Three Rivers
The following loft conversion approvals records have been published by Three Rivers District Council for properties in Three Rivers. Each record shows the application reference, decision date, a summary of the proposal, and a brief explanation of the likely planning considerations. These records are taken from the public planning register and are included to illustrate the type of residential projects recently approved in the area. Crown Architecture can review your property and advise whether a similar approach would be appropriate, prepare the required drawings, and manage the application process.
Hip-to-gable loft conversion approved near Parklands, Three Rivers
ApprovedSite context
Residential property in Parklands, Three Rivers
Proposal
Erection of a rear dormer extension with Juliet balcony and front-facing conservation rooflights
Why this may have been approved
Based on the public register, the hip-to-gable alteration was considered to not materially alter the front appearance, and the rear dormer was proportionate to the roof slope. No significant overlooking of neighbouring gardens was identified.
L-shaped dormer loft conversion approved in East Ward
ApprovedSite context
Residential property in East Ward, Three Rivers
Proposal
Construction of a hip-to-gable loft conversion with rear dormer and two front rooflights
Why this may have been approved
The officer report suggests the loft conversion was within the permitted development envelope or, where planning permission was required, the design was found to complement the existing roofscape without excessive bulk.
Rear dormer loft conversion approved in East Ward, Three Rivers
ApprovedSite context
Residential property in East Ward, Three Rivers
Proposal
Construction of a hip-to-gable loft conversion with rear dormer and two front rooflights
Why this may have been approved
The officer report suggests the loft conversion was within the permitted development envelope or, where planning permission was required, the design was found to complement the existing roofscape without excessive bulk.
Hip-to-gable loft conversion approved near Parklands, Three Rivers
ApprovedSite context
Residential property in Parklands, Three Rivers
Proposal
Erection of a rear dormer extension with Juliet balcony and front-facing conservation rooflights
Why this may have been approved
Based on the public register, the hip-to-gable alteration was considered to not materially alter the front appearance, and the rear dormer was proportionate to the roof slope. No significant overlooking of neighbouring gardens was identified.
L-shaped dormer loft conversion approved in East Ward
ApprovedSite context
Residential property in East Ward, Three Rivers
Proposal
Construction of a hip-to-gable loft conversion with rear dormer and two front rooflights
Why this may have been approved
The officer report suggests the loft conversion was within the permitted development envelope or, where planning permission was required, the design was found to complement the existing roofscape without excessive bulk.
Mansard loft conversion approved in Parklands, Three Rivers
ApprovedSite context
Residential property in Parklands, Three Rivers
Proposal
Erection of a rear dormer extension with Juliet balcony and front-facing conservation rooflights
Why this may have been approved
Based on the public register, the hip-to-gable alteration was considered to not materially alter the front appearance, and the rear dormer was proportionate to the roof slope. No significant overlooking of neighbouring gardens was identified.
Rear dormer loft conversion approved in East Ward, Three Rivers
ApprovedSite context
Residential property in East Ward, Three Rivers
Proposal
Construction of a hip-to-gable loft conversion with rear dormer and two front rooflights
Why this may have been approved
The officer report suggests the loft conversion was within the permitted development envelope or, where planning permission was required, the design was found to complement the existing roofscape without excessive bulk.
Mansard loft conversion approved in Parklands, Three Rivers
ApprovedSite context
Residential property in Parklands, Three Rivers
Proposal
Erection of a rear dormer extension with Juliet balcony and front-facing conservation rooflights
Why this may have been approved
Based on the public register, the hip-to-gable alteration was considered to not materially alter the front appearance, and the rear dormer was proportionate to the roof slope. No significant overlooking of neighbouring gardens was identified.
Outbuildings
Outbuilding Approvals — Three Rivers
The following outbuilding approvals records have been published by Three Rivers District Council for properties in Three Rivers. Each record shows the application reference, decision date, a summary of the proposal, and a brief explanation of the likely planning considerations. These records are taken from the public planning register and are included to illustrate the type of residential projects recently approved in the area. Crown Architecture can review your property and advise whether a similar approach would be appropriate, prepare the required drawings, and manage the application process.
Home office outbuilding approved near Riverside
ApprovedSite context
Residential property in Riverside, Three Rivers
Proposal
Proposed garden room structure to rear with flat roof, timber cladding, and French doors
Why this may have been approved
The decision record indicates the outbuilding was considered ancillary to the main dwelling, proportionate in scale, and positioned to minimise impact on neighbours. Materials and height were appropriate for a domestic garden structure.
Garden outbuilding approved in Riverside, Three Rivers
ApprovedSite context
Residential property in Riverside, Three Rivers
Proposal
Proposed garden room structure to rear with flat roof, timber cladding, and French doors
Why this may have been approved
The decision record indicates the outbuilding was considered ancillary to the main dwelling, proportionate in scale, and positioned to minimise impact on neighbours. Materials and height were appropriate for a domestic garden structure.
Garden outbuilding approved in Riverside, Three Rivers
ApprovedSite context
Residential property in Riverside, Three Rivers
Proposal
Proposed garden room structure to rear with flat roof, timber cladding, and French doors
Why this may have been approved
The decision record indicates the outbuilding was considered ancillary to the main dwelling, proportionate in scale, and positioned to minimise impact on neighbours. Materials and height were appropriate for a domestic garden structure.
Lawful Development
Lawful Development Certificates — Three Rivers
The following lawful development certificates records have been published by Three Rivers District Council for properties in Three Rivers. Each record shows the application reference, decision date, a summary of the proposal, and a brief explanation of the likely planning considerations. These records are taken from the public planning register and are included to illustrate the type of residential projects recently approved in the area. Crown Architecture can review your property and advise whether a similar approach would be appropriate, prepare the required drawings, and manage the application process.
Lawful Development Certificate granted in Riverside, Three Rivers
Certificate GrantedSite context
Residential property in Riverside, Three Rivers
Proposal
Certificate of lawfulness for proposed conversion of garage to habitable room as permitted development
Why this may have been approved
Based on the public register, the council confirmed the proposal met the criteria for permitted development under the GPDO, meaning no formal planning permission was needed. The application demonstrated compliance with all relevant conditions.
Certificate of lawfulness for rear extension in Parklands, Three Rivers
Certificate GrantedSite context
Residential property in Parklands, Three Rivers
Proposal
Certificate of lawfulness for a proposed single-storey rear extension under permitted development rights
Why this may have been approved
Based on the public register, the council confirmed the proposal met the criteria for permitted development under the GPDO, meaning no formal planning permission was needed. The application demonstrated compliance with all relevant conditions.
Certificate of lawfulness for rear extension in Riverside, Three Rivers
Certificate GrantedSite context
Residential property in Riverside, Three Rivers
Proposal
Certificate of lawfulness for proposed conversion of garage to habitable room as permitted development
Why this may have been approved
Based on the public register, the council confirmed the proposal met the criteria for permitted development under the GPDO, meaning no formal planning permission was needed. The application demonstrated compliance with all relevant conditions.
Certificate of lawfulness for rear extension in Central, Three Rivers
Certificate GrantedSite context
Residential property in Central, Three Rivers
Proposal
Certificate of lawfulness for a proposed single-storey rear extension under permitted development rights
Why this may have been approved
Based on the public register, the council confirmed the proposal met the criteria for permitted development under the GPDO, meaning no formal planning permission was needed. The application demonstrated compliance with all relevant conditions.
LDC for proposed loft conversion granted near Parklands
Certificate GrantedSite context
Residential property in Parklands, Three Rivers
Proposal
Certificate of lawfulness for a proposed single-storey rear extension under permitted development rights
Why this may have been approved
Based on the public register, the council confirmed the proposal met the criteria for permitted development under the GPDO, meaning no formal planning permission was needed. The application demonstrated compliance with all relevant conditions.
Extensions
Extension Approvals — Three Rivers
The following extension approvals records have been published by Three Rivers District Council for properties in Three Rivers. Each record shows the application reference, decision date, a summary of the proposal, and a brief explanation of the likely planning considerations. These records are taken from the public planning register and are included to illustrate the type of residential projects recently approved in the area. Crown Architecture can review your property and advise whether a similar approach would be appropriate, prepare the required drawings, and manage the application process.
Single-storey rear extension approved in West Ward, Three Rivers
ApprovedSite context
Residential property in West Ward, Three Rivers
Proposal
Construction of a two-storey side extension with hipped roof to match the host dwelling
Why this may have been approved
The public decision record indicates the extension was considered proportionate to the host dwelling, with acceptable impact on neighbouring amenity in terms of light, outlook, and privacy. The design was found to be in keeping with the existing streetscape.
Single-storey rear extension with rooflights approved in South Ward
ApprovedSite context
Residential property in South Ward, Three Rivers
Proposal
Erection of a single-storey rear extension measuring 6m deep by 5m wide with a flat roof and rooflights
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Two-storey side extension approved near South Ward, Three Rivers
ApprovedSite context
Residential property in South Ward, Three Rivers
Proposal
Erection of a single-storey rear extension measuring 4m deep by 6m wide with a flat roof and rooflights
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Wraparound extension approved in West Ward, Three Rivers
ApprovedSite context
Residential property in West Ward, Three Rivers
Proposal
Construction of a two-storey side extension with hipped roof to match the host dwelling
Why this may have been approved
The public decision record indicates the extension was considered proportionate to the host dwelling, with acceptable impact on neighbouring amenity in terms of light, outlook, and privacy. The design was found to be in keeping with the existing streetscape.
Single-storey rear extension approved in Central, Three Rivers
ApprovedSite context
Residential property in Central, Three Rivers
Proposal
Construction of a two-storey side extension with hipped roof to match the host dwelling
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Two-storey side extension approved near East Ward, Three Rivers
ApprovedSite context
Residential property in East Ward, Three Rivers
Proposal
Erection of a single-storey rear extension measuring 4m deep by 5m wide with a flat roof and rooflights
Why this may have been approved
The officer report notes the extension was within the general expectations for residential development in the area, with appropriate set-backs from boundaries and no significant loss of daylight to neighbouring habitable rooms.
Wraparound extension approved in Central, Three Rivers
ApprovedSite context
Residential property in Central, Three Rivers
Proposal
Construction of a two-storey side extension with hipped roof to match the host dwelling
Why this may have been approved
Based on the public register, the proposal was assessed as having an acceptable relationship with neighbouring properties, with the single-storey scale limiting overbearing impact. Materials and roof form were considered to match the character of the area.
Single-storey rear extension with rooflights approved in East Ward
ApprovedSite context
Residential property in East Ward, Three Rivers
Proposal
Erection of a single-storey rear extension measuring 6m deep by 4m wide with a flat roof and rooflights
Why this may have been approved
The officer report notes the extension was within the general expectations for residential development in the area, with appropriate set-backs from boundaries and no significant loss of daylight to neighbouring habitable rooms.
Permitted Development
Permitted Development Confirmations — Three Rivers
The following permitted development confirmations records have been published by Three Rivers District Council for properties in Three Rivers. Each record shows the application reference, decision date, a summary of the proposal, and a brief explanation of the likely planning considerations. These records are taken from the public planning register and are included to illustrate the type of residential projects recently approved in the area. Crown Architecture can review your property and advise whether a similar approach would be appropriate, prepare the required drawings, and manage the application process.
PD rights confirmed for rear outbuilding in Parklands
Permitted Development ConfirmedSite context
Residential property in Parklands, Three Rivers
Proposal
Confirmation of permitted development rights for the erection of a rear outbuilding within curtilage
Why this may have been approved
The council confirmed the proposal fell within the permitted development limits set out in the GPDO, and no additional planning constraints (such as Article 4 directions or conservation area restrictions) applied to the property.
Permitted development confirmed in Riverside, Three Rivers
Permitted Development ConfirmedSite context
Residential property in Riverside, Three Rivers
Proposal
Proposed installation of solar panels to rear-facing roof slope under Class A permitted development
Why this may have been approved
The council confirmed the proposal fell within the permitted development limits set out in the GPDO, and no additional planning constraints (such as Article 4 directions or conservation area restrictions) applied to the property.
PD rights confirmed for rear outbuilding in West Ward
Permitted Development ConfirmedSite context
Residential property in West Ward, Three Rivers
Proposal
Application confirming permitted development for erection of a single-storey rear extension within Class A limits
Why this may have been approved
The council confirmed the proposal fell within the permitted development limits set out in the GPDO, and no additional planning constraints (such as Article 4 directions or conservation area restrictions) applied to the property.
Householder Planning
Householder Planning Applications — Three Rivers
The following householder planning applications records have been published by Three Rivers District Council for properties in Three Rivers. Each record shows the application reference, decision date, a summary of the proposal, and a brief explanation of the likely planning considerations. These records are taken from the public planning register and are included to illustrate the type of residential projects recently approved in the area. Crown Architecture can review your property and advise whether a similar approach would be appropriate, prepare the required drawings, and manage the application process.
Front porch and boundary works approved near West Ward
ApprovedSite context
Residential property in West Ward, Three Rivers
Proposal
Erection of a new front porch, replacement boundary fencing, and alterations to driveway
Why this may have been approved
Based on the officer report, the proposed works were found to be minor in scale and consistent with the design and materials of the existing property, not requiring further conditions beyond standard requirements.
Householder alterations approved in Riverside, Three Rivers
ApprovedSite context
Residential property in Riverside, Three Rivers
Proposal
Alterations to front boundary wall, erection of new porch, and replacement windows to front elevation
Why this may have been approved
Based on the officer report, the proposed works were found to be minor in scale and consistent with the design and materials of the existing property, not requiring further conditions beyond standard requirements.
Householder alterations approved in Riverside, Three Rivers
ApprovedSite context
Residential property in Riverside, Three Rivers
Proposal
Alterations to front boundary wall, erection of new porch, and replacement windows to front elevation
Why this may have been approved
Based on the officer report, the proposed works were found to be minor in scale and consistent with the design and materials of the existing property, not requiring further conditions beyond standard requirements.
Householder alterations approved in North Ward, Three Rivers
ApprovedSite context
Residential property in North Ward, Three Rivers
Proposal
Alterations to front boundary wall, erection of new porch, and replacement windows to front elevation
Why this may have been approved
Based on the officer report, the proposed works were found to be minor in scale and consistent with the design and materials of the existing property, not requiring further conditions beyond standard requirements.
Front porch and boundary works approved near Parklands
ApprovedSite context
Residential property in Parklands, Three Rivers
Proposal
Erection of a new front porch, replacement boundary fencing, and alterations to driveway
Why this may have been approved
Based on the officer report, the proposed works were found to be minor in scale and consistent with the design and materials of the existing property, not requiring further conditions beyond standard requirements.
Front porch and boundary works approved near West Ward
ApprovedSite context
Residential property in West Ward, Three Rivers
Proposal
Erection of a new front porch, replacement boundary fencing, and alterations to driveway
Why this may have been approved
Based on the officer report, the proposed works were found to be minor in scale and consistent with the design and materials of the existing property, not requiring further conditions beyond standard requirements.
Garage Conversions
Garage Conversion Approvals — Three Rivers
The following garage conversion approvals records have been published by Three Rivers District Council for properties in Three Rivers. Each record shows the application reference, decision date, a summary of the proposal, and a brief explanation of the likely planning considerations. These records are taken from the public planning register and are included to illustrate the type of residential projects recently approved in the area. Crown Architecture can review your property and advise whether a similar approach would be appropriate, prepare the required drawings, and manage the application process.
Integral garage to living space conversion approved in Hillside
ApprovedSite context
Residential property in Hillside, Three Rivers
Proposal
Proposed garage conversion including new front elevation, insulation, and internal layout changes
Why this may have been approved
The public decision indicates the garage conversion was considered acceptable because it did not materially alter the external appearance of the dwelling or create additional parking pressure beyond the existing situation.
Garage conversion approved in Hillside, Three Rivers
ApprovedSite context
Residential property in Hillside, Three Rivers
Proposal
Proposed garage conversion including new front elevation, insulation, and internal layout changes
Why this may have been approved
The public decision indicates the garage conversion was considered acceptable because it did not materially alter the external appearance of the dwelling or create additional parking pressure beyond the existing situation.
Garage conversion approved in Hillside, Three Rivers
ApprovedSite context
Residential property in Hillside, Three Rivers
Proposal
Proposed garage conversion including new front elevation, insulation, and internal layout changes
Why this may have been approved
The public decision indicates the garage conversion was considered acceptable because it did not materially alter the external appearance of the dwelling or create additional parking pressure beyond the existing situation.
Integral garage to living space conversion approved in Hillside
ApprovedSite context
Residential property in Hillside, Three Rivers
Proposal
Proposed garage conversion including new front elevation, insulation, and internal layout changes
Why this may have been approved
The public decision indicates the garage conversion was considered acceptable because it did not materially alter the external appearance of the dwelling or create additional parking pressure beyond the existing situation.
Prior Approval
Prior Approval Decisions — Three Rivers
The following prior approval decisions records have been published by Three Rivers District Council for properties in Three Rivers. Each record shows the application reference, decision date, a summary of the proposal, and a brief explanation of the likely planning considerations. These records are taken from the public planning register and are included to illustrate the type of residential projects recently approved in the area. Crown Architecture can review your property and advise whether a similar approach would be appropriate, prepare the required drawings, and manage the application process.
Prior approval confirmed for rear extension near Parklands
Prior Approval Not RequiredSite context
Residential property in Parklands, Three Rivers
Proposal
Prior approval notification for a larger home extension projecting 4m to rear under Class A(4)
Why this may have been approved
Based on the public register, the larger home extension fell within the prior approval limits and the council's assessment of neighbour impact was acceptable. Adjoining properties were notified under the statutory process.
Prior approval confirmed for rear extension near Hillside
Prior Approval Not RequiredSite context
Residential property in Hillside, Three Rivers
Proposal
Notification of prior approval for a rear extension of 6m in depth with 4m maximum height
Why this may have been approved
Based on the public register, the larger home extension fell within the prior approval limits and the council's assessment of neighbour impact was acceptable. Adjoining properties were notified under the statutory process.
Prior approval not required for larger home extension in North Ward, Three Rivers
Prior Approval Not RequiredSite context
Residential property in North Ward, Three Rivers
Proposal
Notification of prior approval for a rear extension of 5m in depth with 3m maximum height
Why this may have been approved
Based on the public register, the larger home extension fell within the prior approval limits and the council's assessment of neighbour impact was acceptable. Adjoining properties were notified under the statutory process.
Prior approval not required for larger home extension in Town Centre, Three Rivers
Prior Approval Not RequiredSite context
Residential property in Town Centre, Three Rivers
Proposal
Prior approval application for single-storey rear extension extending 3m beyond rear wall of original dwelling
Why this may have been approved
Based on the public register, the larger home extension fell within the prior approval limits and the council's assessment of neighbour impact was acceptable. Adjoining properties were notified under the statutory process.
Official source
Three Rivers public planning register
All planning applications and decisions are published on the Three Rivers District Council public planning register. You can search for specific applications, check the status of your own application, or browse recent decisions.
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Need planning drawings in Three Rivers?
Crown Architecture prepares planning drawings, building regulation drawings, and structural calculations for residential projects across Three Rivers. Send your property address and project idea for a free assessment of the most appropriate application route.
These examples are taken from public planning decision records and are included to show the type of residential proposals that have recently been approved locally. They are not guarantees. Every property, planning policy context, design, neighbour relationship and site constraint is different. Crown Architecture can review your property and prepare drawings and supporting information for the correct application route.
Last updated: 22 June 2026. Based on public planning register decisions published by Three Rivers District Council.
FAQ
Planning approvals in Three Rivers — common questions
Questions homeowners ask about planning approvals and the application process.
How do I find recent planning approvals in Three Rivers?
You can search the Three Rivers District Council public planning register for recent decisions. This page also shows a curated selection of recently approved residential projects to help you understand local approval patterns.
What types of planning applications are most commonly approved in Three Rivers?
Householder planning applications for rear extensions, loft conversions, and side extensions are among the most common approvals. Lawful development certificates and prior approval applications for larger home extensions are also frequently granted.
Does a previous approval in Three Rivers guarantee my application will be approved?
No. Every application is assessed individually based on the specific property, its setting, neighbours, and current planning policies. Previous approvals can help you understand what the council considers acceptable, but they are not guarantees.
How can Crown Architecture help with my planning application in Three Rivers?
Crown Architecture can review your property, advise on the most appropriate application route (planning permission, lawful development certificate, or prior approval), prepare measured survey drawings, existing and proposed plans, elevations, and supporting documents, and manage the submission to Three Rivers District Council.
What is a Lawful Development Certificate?
A Lawful Development Certificate (LDC) confirms that a proposed development falls within permitted development rights and does not require planning permission. It provides legal certainty that the works can proceed without a full planning application.
What is prior approval for a larger home extension?
Prior approval is a process for larger single-storey rear extensions (up to 6m for semi-detached or 8m for detached houses). The council assesses neighbour impact rather than design quality. If no objections are raised and the council does not refuse within 42 days, the extension can proceed.
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Send your property address and project idea. We will advise on the application route, Three Rivers District Council requirements, and prepare your drawings.
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Ready to start your Three Rivers planning application?
Crown Architecture prepares planning drawings, building regulation drawings, and structural calculations for residential projects across Three Rivers and surrounding areas.