Planning Permission in North Somerset
Unitary Authority in South West · Last updated April 2026
North Somerset is a unitary authority south of Bristol, covering a diverse area from the Mendip Hills to the Severn Estuary coastline. With 39 conservation areas, 38 Article 4 directions, Green Belt land, and 1,080 listed buildings, the authority balances heritage protection with the development pressures of the Bristol urban fringe.
The council handles around 1,300 applications annually with an 87.1% approval rate. North Somerset includes the seaside town of Weston-super-Mare, the affluent commuter settlements of Clevedon and Nailsea, and attractive rural villages in the Mendip foothills — each with distinct planning considerations.
Homeowners should check whether their property falls within the local plan designations, particularly Green Belt, AONB, conservation areas, or Article 4 direction zones, as these significantly affect permitted development rights.
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What can I build in North Somerset?
| 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 (39), Article 4 zones (38), 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 (39), Article 4 zones (38), listed buildings |
| Side extension | Detached houses outside protected zones | Semi-detached properties (half-width rule) | Conservation areas (39), Article 4 zones (38), 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 North Somerset | 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 North Somerset (internal works) | If changing external appearance significantly | Listed buildings |
This is general guidance based on North Somerset's planning constraints. Your specific property may differ — use our free PD checker to get a result tailored to your address.
Permitted development in North Somerset
North Somerset's combination of 39 conservation areas, 38 Article 4 directions, and Green Belt land means that permitted development rights are restricted across significant parts of the authority. The Article 4 directions typically apply within conservation areas, removing PD rights for external alterations such as window and door replacements, re-roofing, and boundary treatments. In the Green Belt, extensions must not result in disproportionate additions. Outside these designated areas, standard PD rights apply.
What North Somerset expects from your project
Local design guidance
Local Plan: North Somerset Core Strategy
The North Somerset Core Strategy was adopted in April 2017 and is supplemented by the Sites and Policies Plan (adopted May 2016). North Somerset is a unitary authority on Bristol's southwestern fringe, with significant coastal areas around Weston-super-Mare and the Mendip Hills AONB.
Emerging / replacement plan
North Somerset is preparing a new Local Plan. A Regulation 18 Issues consultation ran in 2022, and a Regulation 19 Pre-Submission consultation ran in 2024. Submission to the Planning Inspectorate is expected in 2025.
39 conservation areas
North Somerset 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.
38 Article 4 directions
North Somerset has applied Article 4 directions to 38 areas, which remove certain permitted development rights in those zones. Use our free checker to see if your property is affected.
Conservation areas in North Somerset
39 designated conservation areas
The 39 conservation areas in North Somerset protect a variety of historic environments, from the Victorian and Edwardian seafront of Clevedon to the medieval village cores of Long Ashton, Winscombe, and Banwell. The Article 4 directions in many of these areas mean that even minor external changes — such as replacing windows, painting walls, or altering boundary walls — may require planning permission. The council is particularly attentive to changes that affect the streetscape character of these conservation areas.
Article 4 directions in North Somerset
38 Article 4 direction areas
Listed buildings in North Somerset
There are 1,080 listed buildings in North Somerset. 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 North Somerset's conservation team before starting any work on a listed property.
Planning application statistics
Year ending September 2025 | Source: MHCLG planning application statistics
North Somerset received 1,311 planning applications and decided 1,174 in the year ending September 2025. The approval rate of 87.1% 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.
North Somerset Council received 1,311 planning applications in the year ending September 2025, with an 87.1% approval rate across 1,174 decisions. The council handled 684 householder applications with an 89.6% on-time rate. Major applications achieved an 82.2% on-time rate. The delegation rate is 96.8%, with most decisions made by planning officers.
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 North Somerset
Browse what's been approved near you
Seeing what similar projects have been approved near your property can help you understand what North Somerset expects in terms of scale, materials, and design. It's also useful for gauging how quickly the council processes applications.
Search planning applications on North Somerset'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 North Somerset
Housing Delivery Test 2023 measurement | Source: MHCLG
North Somerset delivered 3,053 homes against a requirement of 3,598 over the three-year measurement period, giving a Housing Delivery Test score of 85%. This is below the 95% threshold, which means North Somerset must publish an action plan setting out how it intends to increase housing delivery. For homeowners, this is a positive signal — the council is under pressure to approve more housing, which can make planning officers more receptive to well-designed residential applications and extensions that add living space.
Lawful Development Certificates in North Somerset
A Lawful Development Certificate (LDC) is formal confirmation from North Somerset 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.
North Somerset decided 684 householder applications in the year ending september 2025. Their 8-week performance of 89.6% is below the national average of 93%, so LDC applications may take longer than the 8-week target. LDC applications follow the same 8-week statutory determination period as householder planning applications.
How to apply for an LDC in North Somerset
You can apply for a Lawful Development Certificate through the Planning Portal or directly through North Somerset'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
North Somerset 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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Approval rates, decision patterns, Article 4 directions, fees & timelines, and council-specific tips for North Somerset.
Pre-application advice in North Somerset
North Somerset 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 →North Somerset Council offers a paid pre-application advice service. Householder enquiries from around £150. Apply online through the council's planning pages.
Planning fees and timelines in North Somerset
| 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 North Somerset and may change. Building regulations fees are separate — see the building control section below.
Building regulations in North Somerset
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 North Somerset is provided by North Somerset Building Control. You can also use a private approved inspector instead of the council's service.
Building control contact
North Somerset Council Building Control or approved private inspectors.
North Somerset planning department
Your building project checklist for North Somerset
- Check if your property is in a conservation area — North Somerset has 39 conservation areas. Use our free checker or see the list above.
- Check for Article 4 directions at your address — North Somerset has 38 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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