Planning Permission in Ashford
Non-Metropolitan District in South East · Last updated April 2026
Ashford sits at the heart of Kent, a borough that has transformed from a traditional market town into one of the county's fastest-growing urban centres since the arrival of the Channel Tunnel high-speed rail link. The wider borough includes extensive rural areas within the Kent Downs AONB and the Romney Marsh, with villages like Tenterden, Wye, and Charing retaining strong historic character.
With 44 conservation areas, 75 Article 4 directions, and 2,402 listed buildings, Ashford balances significant growth with heritage protection. The council approved 87.7% of applications in the year ending September 2025, processing 972 decisions from 1,357 submissions — one of the higher volumes in Kent.
This guide covers permitted development rights, planning fees, and the application process for homeowners across the Ashford borough — from new-build estates in the town to historic properties in Tenterden and the surrounding countryside.
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What can I build in Ashford?
| 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 | Conservation areas (44), Article 4 zones (75), listed buildings |
| Rear extension (two storey) | Only outside conservation areas and Article 4 zones, if within 3m limit | Check distance to boundary ≥7m | Conservation areas (44), Article 4 zones (75), listed buildings |
| Side extension | Detached houses outside protected zones | Semi-detached properties (half-width rule) | Conservation areas (44), Article 4 zones (75), listed buildings |
| Loft conversion (dormer) | Houses outside conservation areas | Properties on prominent corners | Conservation areas, listed buildings, flats |
| Loft conversion (Velux/rooflight) | Most of Ashford | 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 |
| 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 Ashford (internal works) | If changing external appearance significantly | Listed buildings |
This is general guidance based on Ashford's planning constraints. Your specific property may differ — use our free PD checker to get a result tailored to your address.
Permitted development in Ashford
Ashford's planning context is split between the rapidly growing urban area and the surrounding countryside, much of which falls within the Kent Downs AONB. The 44 conservation areas and 75 Article 4 directions significantly restrict permitted development in many parts of the borough. Tenterden's Article 4 direction removes PD rights for front-facing alterations, while numerous village conservation areas limit extensions and outbuildings. Properties in the AONB have reduced PD rights for extensions. Outside protected zones, standard PD rights apply, and the council is generally supportive of appropriate householder development.
What Ashford expects from your project
Local Plan: Ashford Local Plan 2030
Covers the period to 2030. Sets out housing, employment and environmental policies for the Ashford borough. A Local Plan Review is underway to extend the plan period to 2045.
44 conservation areas
Ashford 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.
75 Article 4 directions
Ashford has applied Article 4 directions to 75 areas, which remove certain permitted development rights in those zones. Use our free checker to see if your property is affected.
Conservation areas in Ashford
44 designated conservation areas
Ashford's 44 conservation areas range from the medieval centre of Tenterden — one of Kent's finest small towns — to rural villages like Smarden, Biddenden, and Pluckley. With 2,402 listed buildings, the borough has one of the highest concentrations in Kent. The 75 Article 4 directions provide additional control in sensitive locations, removing specific PD rights such as changes to windows, doors, and roofing materials. Homeowners in these areas should check constraints carefully before assuming works are permitted development.
Article 4 directions in Ashford
75 Article 4 direction areas
Listed buildings in Ashford
There are 2,402 listed buildings in Ashford. 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 Ashford's conservation team before starting any work on a listed property.
Planning application statistics
Year ending September 2025 | Source: MHCLG planning application statistics
Ashford received 1,357 planning applications and decided 972 in the year ending September 2025. The approval rate of 87.7% 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.
Ashford processed 972 planning decisions from 1,357 applications received in the year ending September 2025. The 87.7% approval rate is slightly below the national average, reflecting the borough's complex mix of growth pressures and heritage constraints. Major applications achieved 100% on-time performance, minors 96.1%, and householder applications 98%. The 96.5% delegation rate indicates efficient processing.
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 Ashford
Browse what's been approved near you
Seeing what similar projects have been approved near your property can help you understand what Ashford expects in terms of scale, materials, and design. It's also useful for gauging how quickly the council processes applications.
Search planning applications on Ashford'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 Ashford
Housing Delivery Test 2023 measurement | Source: MHCLG
Ashford delivered 2,765 homes against a requirement of 2,367 over the three-year measurement period, giving a Housing Delivery Test score of 117%. This is above the 95% threshold, which means there are no government-imposed consequences for housing under-delivery. Planning applications in Ashford are assessed on their own merits under standard planning policies.
Lawful Development Certificates in Ashford
A Lawful Development Certificate (LDC) is formal confirmation from Ashford 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.
Ashford decided 453 householder applications in the year ending september 2025. Their 8-week performance of 98% 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 Ashford
You can apply for a Lawful Development Certificate through the Planning Portal or directly through Ashford'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
Ashford 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 Ashford.
Pre-application advice in Ashford
Ashford 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 →Ashford offers pre-application advice to help applicants understand likely planning issues. A written response is provided within 28 days for householder enquiries.
Planning fees and timelines in Ashford
| 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 Ashford and may change. Building regulations fees are separate — see the building control section below.
Building regulations in Ashford
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 Ashford is provided by Ashford Borough Council. You can also use a private approved inspector instead of the council's service.
Building control contact
Ashford planning department
Your building project checklist for Ashford
- Check if your property is in a conservation area — Ashford has 44 conservation areas. Use our free checker or see the list above.
- Check for Article 4 directions at your address — Ashford has 75 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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