Planning Permission in Exmoor National Park
National Park Authority in England · Last updated April 2026
Exmoor National Park covers 267 square miles of dramatic moorland, wooded combes, and coastal cliffs across Devon and Somerset. The National Park Authority handles all planning applications within the park boundary. With 17 conservation areas and 746 listed buildings, planning on Exmoor prioritises the conservation of the park's special landscape qualities.
The NPA processes around 170 applications annually with a 90.6% approval rate. Exmoor's scattered settlements, from the small market towns of Dulverton, Lynton, and Porlock to isolated moorland farmsteads, each have their own character that informs planning decisions.
Homeowners within Exmoor should consult the Exmoor National Park Local Plan before starting any work. National park designation brings additional restrictions beyond those in surrounding districts.
Planning a project in Exmoor National Park? Start here.
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What can I build in Exmoor National Park?
| Project type | Likely permitted development | May need planning permission | Likely needs planning permission |
|---|---|---|---|
| Rear extension (single storey) | Most of Exmoor National Park outside protected zones | Properties near boundaries | Conservation areas (17), listed buildings |
| Rear extension (two storey) | Most of Exmoor National Park outside protected zones, if within 3m limit | Check distance to boundary ≥7m | Conservation areas (17), listed buildings |
| Side extension | Detached houses outside protected zones | Semi-detached properties (half-width rule) | Conservation areas (17), listed buildings |
| Loft conversion (dormer) | Houses outside conservation areas | Properties on prominent corners | Conservation areas, listed buildings, flats |
| Loft conversion (Velux/rooflight) | Most of Exmoor National Park | Front-facing rooflights in conservation areas | Listed buildings |
| Outbuilding / garden office | Most of Exmoor National Park outside protected zones, if within size/height limits | Large outbuildings covering >50% of garden | Conservation areas (side or front), listed buildings |
| 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 Exmoor National Park (internal works) | If changing external appearance significantly | Listed buildings |
This is general guidance based on Exmoor National Park's planning constraints. Your specific property may differ — use our free PD checker to get a result tailored to your address.
Permitted development in Exmoor National Park
As a national park, Exmoor has more restrictive permitted development rights than standard planning authorities. Some PD rights are reduced or removed — for example, extension size limits are smaller and cladding requires permission. The 17 conservation areas and 746 listed buildings add further constraints. The absence of Article 4 directions means that outside conservation areas, the standard national park PD limits apply without additional restrictions.
What Exmoor National Park expects from your project
Local Plan: Exmoor National Park Local Plan 2011–2031
Exmoor National Park Authority adopted its Local Plan in October 2011. Planning in Exmoor must give great weight to conserving and enhancing the natural and cultural heritage of the park, including its dramatic moorland landscapes, ancient woodland and distinctive coastal scenery. The plan carefully manages residential development, tourism and farm diversification.
Emerging / replacement plan
Exmoor National Park Authority is preparing a new Local Plan. A Regulation 18 Issues and Options consultation ran in 2022–2023, with a Regulation 19 plan anticipated in 2025 and adoption targeted for 2026.
90.6% approval rate
Exmoor National Park approves 90.6% of planning applications, above the national average of 86.9%. Well-designed residential applications in this area tend to have a good chance of success.
Conservation areas in Exmoor National Park
17 designated conservation areas
The 17 conservation areas within Exmoor protect the most important historic settlements — from the coastal villages of Lynmouth and Porlock to the inland towns of Dulverton, Dunster, and Winsford. The park's distinctive building traditions include local stone, thatch, and slate. Dunster, with its castle and medieval street, is one of the most architecturally significant villages in the South West. Properties in conservation areas face strict controls on extensions, dormers, and external alterations.
Article 4 directions in Exmoor National Park
2 Article 4 direction areas
Listed buildings in Exmoor National Park
There are 746 listed buildings in Exmoor National Park. 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 Exmoor National Park's conservation team before starting any work on a listed property.
Planning application statistics
Year ending September 2025 | Source: MHCLG planning application statistics
Exmoor National Park received 171 planning applications and decided 170 in the year ending September 2025. The approval rate of 90.6% 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.
Exmoor National Park Authority received 171 planning applications in the year ending September 2025, with a 90.6% approval rate across 170 decisions. The NPA processed 58 householder applications. The high approval rate reflects the NPA's collaborative approach and the effectiveness of pre-application discussions in this small, close-knit planning authority.
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 Exmoor National Park
Browse what's been approved near you
Seeing what similar projects have been approved near your property can help you understand what Exmoor National Park expects in terms of scale, materials, and design. It's also useful for gauging how quickly the council processes applications.
Search planning applications on Exmoor National Park's portal →Data from MHCLG planning application register. Search for householder applications (H01/H02) to see extensions and loft conversions in your area.
Lawful Development Certificates in Exmoor National Park
A Lawful Development Certificate (LDC) is formal confirmation from Exmoor National Park 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.
Exmoor National Park decided 58 householder applications in the year ending september 2025. Their 8-week performance of 98.3% 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 Exmoor National Park
You can apply for a Lawful Development Certificate through the Planning Portal or directly through Exmoor National Park'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
Exmoor National Park 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.
Check your permitted development rights
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£49Exmoor National Park Local Authority Report
Approval rates, decision patterns, Article 4 directions, fees & timelines, and council-specific tips for Exmoor National Park.
Pre-application advice in Exmoor National Park
Exmoor National Park offers a pre-application advice service.
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?
Check in 2 minutes with our free tool — no sign-up needed.
Check your PD rights now →Exmoor National Park Authority offers pre-application advice. Householder enquiries from around £100. Contact the planning team directly for guidance on proposed development.
Planning fees and timelines in Exmoor National Park
| 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 Exmoor National Park and may change. Building regulations fees are separate — see the building control section below.
Building regulations in Exmoor National Park
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 Exmoor National Park is provided by Exmoor National Park Building Control. You can also use a private approved inspector instead of the council's service.
Building control contact
Building control is provided by the relevant district council (West Somerset, North Devon, or Mid Devon) or approved private inspectors.
Exmoor National Park planning department
Your building project checklist for Exmoor National Park
- Check if your property is in a conservation area — Exmoor National Park has 17 conservation areas. Use our free checker or see the list above.
- Check for Article 4 directions at your address — Exmoor National Park has 2 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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