Planning Permission in Sevenoaks
Non-Metropolitan District in South East · Last updated April 2026
Sevenoaks district sits in the west Kent countryside, with approximately 93% of its area designated as Green Belt — one of the highest proportions of any district in England. The district includes the affluent commuter towns of Sevenoaks and Westerham, the historic market town of Edenbridge, and numerous Weald villages. The Kent Downs AONB covers the northern chalk ridge, while the Low Weald extends to the south.
With 41 conservation areas, Green Belt covering nearly the entire district, and 1,654 listed buildings, Sevenoaks is one of the most constrained planning environments in the South East. The council approved 87.4% of applications in the year ending September 2025, reflecting a careful balance between protection and appropriate development.
Whether you are extending a property in Sevenoaks town, converting outbuildings in the Weald, or renovating a listed cottage, understanding the Green Belt and heritage constraints is essential. This guide covers PD rights, fees, and the local planning process.
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What can I build in Sevenoaks?
| Project type | Likely permitted development | May need planning permission | Likely needs planning permission |
|---|---|---|---|
| Rear extension (single storey) | Only outside conservation areas and Article 4 zones | Properties near boundaries or Green Belt fringe areas | Conservation areas (41), listed buildings |
| Rear extension (two storey) | Only outside conservation areas and Article 4 zones, if within 3m limit | Check distance to boundary ≥7m or Green Belt fringe areas | Conservation areas (41), listed buildings |
| Side extension | Detached houses outside protected zones | Semi-detached properties (half-width rule) | Conservation areas (41), listed buildings |
| Loft conversion (dormer) | Houses outside conservation areas | Properties on prominent corners or Green Belt fringe areas | Conservation areas, listed buildings, flats |
| Loft conversion (Velux/rooflight) | Most of Sevenoaks | Front-facing rooflights in conservation areas | Listed buildings |
| Outbuilding / garden office | Only outside conservation areas and Article 4 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 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 Sevenoaks (internal works) | If changing external appearance significantly | Listed buildings |
This is general guidance based on Sevenoaks's planning constraints. Your specific property may differ — use our free PD checker to get a result tailored to your address.
Permitted development in Sevenoaks
Sevenoaks is dominated by the Green Belt, which covers approximately 93% of the district. This means the vast majority of properties are subject to the Green Belt test — extensions must not be disproportionate to the original dwelling. The 41 conservation areas provide additional restrictions in the historic town centres and villages. Properties in the Kent Downs AONB face reduced PD limits for extensions. Even in Sevenoaks town itself, where standard PD rights might apply in the urban area, much of the surrounding land is Green Belt. Pre-application advice is essential for most development proposals.
What Sevenoaks expects from your project
Local design guidance
- Kent Design Guide
Local Plan: Sevenoaks District Local Plan
The Sevenoaks District Local Plan was adopted in February 2020. The district is extensively covered by Metropolitan Green Belt (around 93%) and the Kent Downs AONB, making it one of the most constrained districts in England in terms of development land.
Emerging / replacement plan
Sevenoaks is preparing a new Local Plan review to respond to the new NPPF. A Regulation 18 Issues and Options consultation ran in 2023-2024.
41 conservation areas
Sevenoaks has a high number of conservation areas. Check whether your property falls within one before starting any work — conservation area status significantly restricts what you can do without planning permission.
Conservation areas in Sevenoaks
41 designated conservation areas
The 41 conservation areas include Sevenoaks town centre with its medieval church and Georgian high street, Westerham's historic core, and numerous Wealden villages like Penshurst, Chiddingstone, and Leigh. With 1,654 listed buildings — including major country houses like Knole, Hever Castle, and Ightham Mote — the district has an exceptionally rich heritage landscape. The council assesses proposals for their impact on the setting and character of these nationally significant assets.
Article 4 directions in Sevenoaks
9 Article 4 direction areas
Listed buildings in Sevenoaks
There are 1,654 listed buildings in Sevenoaks. 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 Sevenoaks's conservation team before starting any work on a listed property.
Planning application statistics
Year ending September 2025 | Source: MHCLG planning application statistics
Sevenoaks received 1,269 planning applications and decided 1,226 in the year ending September 2025. The approval rate of 87.4% 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.
Sevenoaks processed planning decisions with an 87.4% approval rate in the year ending September 2025. Given that 93% of the district is Green Belt, this approval rate is reasonable — the council works constructively with applicants on appropriate proposals. Processing efficiency is measured across major, minor, and householder categories, with the delegation rate reflecting efficient handling of the caseload.
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 Sevenoaks
Browse what's been approved near you
Seeing what similar projects have been approved near your property can help you understand what Sevenoaks expects in terms of scale, materials, and design. It's also useful for gauging how quickly the council processes applications.
Search planning applications on Sevenoaks'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 Sevenoaks
Housing Delivery Test 2023 measurement | Source: MHCLG
Sevenoaks delivered 829 homes against a requirement of 1,902 over the three-year measurement period, giving a Housing Delivery Test score of 44%. This is well below the 75% threshold, which triggers the most significant consequence: the “presumption in favour of sustainable development” (also called the “tilted balance”). This means planning applications for housing should be approved unless the harm would significantly and demonstrably outweigh the benefits. For homeowners, this is a strong signal — Sevenoaks is under considerable pressure to approve housing, making it one of the more favourable environments for residential planning applications in England.
Lawful Development Certificates in Sevenoaks
A Lawful Development Certificate (LDC) is formal confirmation from Sevenoaks 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.
Sevenoaks decided 700 householder applications in the year ending september 2025. Their 8-week performance of 95.7% 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 Sevenoaks
You can apply for a Lawful Development Certificate through the Planning Portal or directly through Sevenoaks'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
Sevenoaks 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 Sevenoaks.
Pre-application advice in Sevenoaks
Sevenoaks offers a pre-application advice service. The fee for householder pre-app advice is From £150 for householder proposals.
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.
Think your project might be permitted development?
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Check your PD rights now →Sevenoaks offers pre-application advice for householder and larger schemes. With 93% Green Belt coverage, pre-app advice is essential for most properties in the district.
Planning fees and timelines in Sevenoaks
| Application type | Fee | Typical timeline |
|---|---|---|
| Householder planning application | £528 | 8 weeks |
| Full planning permission | £610 per dwelling | 8-13 weeks |
| Lawful Development Certificate (proposed) | £264 | 6-8 weeks |
| Lawful Development Certificate (existing) | £298 | 6-8 weeks |
| Listed building consent | Free | 8 weeks |
| Prior approval | £120 | 56 days |
| Discharge of conditions | £145 per request | 8 weeks |
| Non-material amendment | £44 | 28 days |
Fees are set nationally and correct as of April 2026. Pre-application fees are set by Sevenoaks and may change. Building regulations fees are separate — see the building control section below.
Building regulations in Sevenoaks
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 Sevenoaks is provided by Sevenoaks District Council. You can also use a private approved inspector instead of the council's service.
Building control contact
Sevenoaks planning department
Your building project checklist for Sevenoaks
- Check if your property is in a conservation area — Sevenoaks has 41 conservation areas. Use our free checker or see the list above.
- Check for Article 4 directions at your address — Sevenoaks has 9 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.
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