Planning Permission in Sutton
London Borough in London · Last updated April 2026
Sutton is a distinctive outer London borough in the south of the capital, blending quiet suburban neighbourhoods with historic villages, significant green spaces, and emerging centres of scientific excellence. The borough encompasses the characterful Cheam Village (with its Grade II* listed Whitehall timber-framed house), the historic Carshalton Village with its famous ponds, the pioneering eco-development at Hackbridge (home to BedZED, the UK's first large-scale sustainable community), and the world-leading London Cancer Hub at Belmont. With 89 parks and green spaces, 209 listed buildings, and a housing stock dominated by Victorian, Edwardian, and interwar properties, Sutton is a borough where many homeowners seek to extend and improve their homes.
Planning in Sutton is governed by the adopted Sutton Local Plan 2016-2031 (adopted February 2018), with a new Local Plan 2024-2041 currently being prepared (Regulation 18 consultation held July-September 2024, draft plan expected Autumn 2025). The borough has 15 conservation areas, 4 Article 4 directions, significant Green Belt coverage in the south, and the Hackbridge and Beddington Corner Neighbourhood Plan (made January 2019). Sutton is designated as a London Plan Opportunity Area with potential for 5,000 new homes and 3,500 new jobs. The £1 billion London Cancer Hub at Belmont is one of London's most significant regeneration projects, aiming to create 13,000 jobs.
With a planning approval rate of 87.9% — in line with the national average of 86.9% — and a Housing Delivery Test score of 114% (comfortably exceeding targets), Sutton is a well-performing planning authority. The council decided 681 householder applications in the year to September 2025, with 97.8% on time. Understanding conservation area constraints, Green Belt restrictions, and the borough's Article 4 directions is key to a successful planning outcome.
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What can I build in Sutton?
| Project type | Likely permitted development | May need planning permission | Likely needs planning permission |
|---|---|---|---|
| Rear extension (single storey) | Most of Sutton outside protected zones | Properties near boundaries or Green Belt fringe areas | Conservation areas (15), Article 4 zones (4), listed buildings |
| Rear extension (two storey) | Most of Sutton outside protected zones, if within 3m limit | Check distance to boundary ≥7m or Green Belt fringe areas | Conservation areas (15), Article 4 zones (4), listed buildings |
| Side extension | Detached houses outside protected zones | Semi-detached properties (half-width rule) | Conservation areas (15), Article 4 zones (4), listed buildings |
| Loft conversion (dormer) | Houses outside conservation areas and Article 4 zones | Properties on prominent corners or in Article 4 areas (HMO borough-wide, Sutton Town Centre — office to residential) | Conservation areas (e.g. Beddington Village, Benhilton, Carshalton Beeches), listed buildings, flats |
| Loft conversion (Velux/rooflight) | Most of Sutton | Front-facing rooflights in conservation areas | Listed buildings, Article 4 areas |
| Outbuilding / garden office | Most of Sutton outside protected zones, if within size/height limits | Large outbuildings covering >50% of garden | Conservation areas (side or front), listed buildings, Green Belt |
| Porch | Most properties if within 3m² and 3m height | Properties in Article 4 areas or near highway boundary | Conservation areas with restrictions, listed buildings |
| Solar panels | Most properties (roof-mounted) | Panels protruding beyond roofline | Listed buildings, conservation areas (if visible from road) |
| Driveway / hard standing | If using permeable surfacing | Non-permeable surfacing over 5m² | Conservation areas with specific restrictions |
| Garage conversion | Most of Sutton (internal works) | If changing external appearance significantly | Listed buildings |
This is general guidance based on Sutton's planning constraints. Your specific property may differ — use our free PD checker to get a result tailored to your address.
Permitted development in Sutton
Permitted development rights in Sutton generally follow the national GPDO but are restricted in several ways. First, the borough has a 2024 borough-wide Article 4 direction for HMOs (in force from February 2025) that requires planning permission for all conversions of dwelling houses to small HMOs. Second, a Sutton Town Centre Article 4 direction (2014) restricts office-to-residential conversions in the town centre. Third, the Sutton Garden Suburb Article 4 direction (2007) restricts alterations to houses on specific roads in Benhilton. Fourth, a 1984 Roof Alterations direction restricts roof modifications at various properties across the borough. Additionally, the borough's significant Green Belt coverage (approximately 14% of the borough) in the south means extensions to properties in the Green Belt must not represent disproportionate additions. The council's Design of Residential Extensions SPD sets expectations for acceptable extension design.
What Sutton expects from your project
Sutton's design expectations are set out in the Design of Residential Extensions SPD and the Urban Design Guide SPD, which provide guidance on acceptable extensions, alterations, and new development. A Design Review Panel managed by Design South East operates to assess significant development proposals. CIL rates are straightforward: £100/sqm for residential development and £120/sqm for convenience retail, plus Mayoral CIL of £25/sqm (all subject to annual indexation). Sutton's suburban character, with predominantly semi-detached and detached housing, means extension design needs to respect the rhythm and scale of existing streets. The Hackbridge and Beddington Corner Neighbourhood Plan (made January 2019) adds local policies for this area, reflecting its pioneering sustainability credentials including BedZED — the UK's first large-scale mixed-use sustainable community (100 homes, built 2002).
Local design guidance
Local Plan: London Borough of Sutton Local Plan 2016–2031
Sutton's Local Plan was adopted in February 2018. It supports significant growth in Sutton town centre, which is designated as a Opportunity Area in the London Plan, alongside more modest growth in neighbourhood centres. The plan includes ambitious policies for sustainable transport and Sutton's eco-district aspirations.
Emerging / replacement plan
Sutton is preparing a new Local Plan in light of the updated London Plan and national policy changes. A Regulation 18 consultation is anticipated in 2025.
Conservation areas in Sutton
15 designated conservation areas
Sutton has 15 conservation areas covering approximately 208 hectares (4.75% of the borough). These range from the medieval Cheam Village (designated 1970, one of the borough's oldest) to the more recent Sutton Town Centre (designated 2011, and notably the first town centre in the UK to become a Heritage Action Zone in 2017 in partnership with Historic England). Other notable conservation areas include Carshalton Village (with its historic ponds and Domesday Book connections), Benhilton (the Sutton Garden Suburb, the borough's first conservation area designated in 1989), and Beddington Village (home to Carew Manor containing the borough's only Grade I listed building — the medieval Great Hall). With 1 Grade I, 14 Grade II*, and 194 Grade II listed buildings, plus over 100 locally listed buildings, heritage considerations are an important part of Sutton's planning landscape.
Article 4 directions in Sutton
4 Article 4 direction areas
Listed buildings in Sutton
There are 209 listed buildings in Sutton. If your property is listed, permitted development rights are significantly restricted. Most external and many internal alterations will require listed building consent, which is separate from planning permission. Always check with Sutton's conservation team before starting any work on a listed property.
Planning application statistics
Year ending September 2025 | Source: MHCLG planning application statistics
Sutton received 954 planning applications and decided 955 in the year ending September 2025. The approval rate of 87.9% is above the national average of 86.9%. Major applications are expected to be decided within 13 weeks, while householder and other non-major applications have an 8-week target. The “in time” figures include decisions made within agreed extensions of time.
Sutton decided 955 planning applications in the year to September 2025, with an approval rate of 87.9% — in line with the national average of 86.9%. The council processed 681 householder applications with 97.8% on time and achieved 100% on time for major applications. The delegation rate of 97.4% is one of the higher rates in London. The Housing Delivery Test score of 114% (1,436 homes delivered against 1,255 required) means the borough passes comfortably with no consequences. As a London Plan Opportunity Area, Sutton is targeted for 5,000 new homes and 3,500 new jobs. The London Cancer Hub at Belmont is driving major growth, with a £1 billion development delivering 1 million sqft of laboratory and research space and approximately 13,000 jobs. Sutton Town Centre is also undergoing regeneration with plans for a new Civic Hub and public realm improvements.
If your project complies with permitted development rules, you don't need to worry about approval rates — a Lawful Development Certificate is a factual assessment, not a judgment call.
Recent planning applications in Sutton
Browse what's been approved near you
Seeing what similar projects have been approved near your property can help you understand what Sutton expects in terms of scale, materials, and design. It's also useful for gauging how quickly the council processes applications.
Search planning applications on Sutton's portal →Data from MHCLG planning application register. Search for householder applications (H01/H02) to see extensions and loft conversions in your area.
Housing delivery in Sutton
Housing Delivery Test 2023 measurement | Source: MHCLG
Sutton delivered 1,436 homes against a requirement of 1,255 over the three-year measurement period, giving a Housing Delivery Test score of 114%. This is above the 95% threshold, which means there are no government-imposed consequences for housing under-delivery. Planning applications in Sutton are assessed on their own merits under standard planning policies.
Lawful Development Certificates in Sutton
A Lawful Development Certificate (LDC) is formal confirmation from Sutton that your project is lawful under permitted development rules. It is not legally required before you build, but it is the only official document that proves your project did not need planning permission. Most solicitors will ask for one when you come to sell, remortgage, or insure your property.
Sutton decided 681 householder applications in the year ending september 2025. Their 8-week performance of 97.8% is above the national average of 93%, which suggests LDC applications are likely to be processed on time. LDC applications follow the same 8-week statutory determination period as householder planning applications.
How to apply for an LDC in Sutton
You can apply for a Lawful Development Certificate through the Planning Portal or directly through Sutton's website. You will need to submit:
- A completed application form (available on the Planning Portal)
- A site location plan at 1:1250 or 1:2500 scale
- Existing and proposed floor plans and elevations
- A written description of the proposed works and how they comply with the GPDO 2015
- The application fee of £258
Sutton must issue a decision within 8 weeks. If the application is approved, the certificate is a permanent legal record that the development is lawful. If refused, you can appeal to the Planning Inspectorate or amend your project and reapply.
Need help preparing your LDC application?
Our Permitted Development Certificate Report gives you a full PD eligibility assessment, property constraints check, and application checklist tailored to your address and project — so you can apply with confidence.
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Approval rates, decision patterns, Article 4 directions, fees & timelines, and council-specific tips for Sutton.
Pre-application advice in Sutton
Sutton offers a pre-application advice service. The fee for householder pre-app advice is Householder fee as per the Pre-Application Charging Schedule 2025 (contact the council for current charges). Written response within 14 working days of meeting.. You can typically expect a response within 14 working days from meeting date (Categories A-D); 21 working days (Categories E-G).
Pre-app advice is worth paying for if your project is borderline, your property is in a conservation area, or your home is a listed building.
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Planning fees and timelines in Sutton
| Application type | Fee | Typical timeline |
|---|---|---|
| Householder planning permission | £528 | 8 weeks |
| Lawful Development Certificate (proposed) | £264 | 6-8 weeks |
| Lawful Development Certificate (existing) | £298 | 6-8 weeks |
| Full planning permission (no new dwellings) | £548 | 8 weeks |
| Listed building consent | Free | 8 weeks |
| Prior approval (larger home extension) | £120 | 42 days |
| Discharge of conditions (householder) | £145 | 8 weeks |
| Non-material amendment (householder) | £44 | 28 days |
Fees are set nationally and correct as of April 2026. Pre-application fees are set by Sutton and may change. Building regulations fees are separate — see the building control section below.
Building regulations in Sutton
Building regulations approval is separate from planning permission. Most extensions, loft conversions, and structural alterations need building regs approval even if they don't need planning permission.
Building control in Sutton is provided by Sutton Building Control. You can use Sutton Council's Local Authority Building Control service or a private Registered Building Control Approver. Full Plans and Building Notice routes available. You can also use a private approved inspector instead of the council's service.
Fees depend on the type and scale of work. Contact the team for a quote.
Sutton planning department
Your building project checklist for Sutton
- Check if your property is in a conservation area — Sutton has 15 conservation areas. Use our free checker or see the list above.
- Check for Article 4 directions at your address — Sutton has 4 Article 4 areas. Check your address.
- Check if your property is listed — search the Historic England list.
- Use our free PD checker to see if your project qualifies as permitted development — Check now.
- Consider a Lawful Development Certificate if PD applies — it protects you when selling. Learn more about LDCs or get your PD Certificate Report.
- Consider pre-application advice if planning permission is needed — see the pre-application section above.
- Check building regulations — most extensions and loft conversions need building regs approval even if they don't need planning permission.
- Check Party Wall Act obligations if building near a boundary — read our Party Wall guide or use our free Party Wall tool.
- Notify your home insurer about planned building work.
- Get at least 3 quotes from builders and check their credentials.
Nearby planning authorities
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