Planning Permission in Northampton
Former Borough (now West Northamptonshire) in East Midlands · Last updated April 2026
Northampton was replaced by West Northamptonshire in 2021 as part of local government reorganisation. Planning applications in this area are now handled by West Northamptonshire.
View West Northamptonshire planning authority pageNorthampton is a major county town and former borough in Northamptonshire, now administered by West Northamptonshire Council (formed April 2021). With a population of approximately 249,000 in the urban area, Northampton has 20 conservation areas, 450 listed buildings including 16 at Grade I, and a borough-wide HMO Article 4 direction. Its heritage spans from the Norman period — the Church of the Holy Sepulchre (c.1100) is one of only four surviving round churches in England — through to the distinctive Boot and Shoe Quarter of Victorian shoe factories.
Planning decisions are guided by the West Northamptonshire Joint Core Strategy (2014) and the Northampton Local Plan Part 2 (adopted March 2023). The town is experiencing major growth and regeneration: the Northampton Waterside Enterprise Zone covers 120 hectares of brownfield land along the River Nene, the University of Northampton relocated to its Waterside Campus in 2018, and the Northampton Gateway Strategic Rail Freight Interchange (NSIP, opened early 2026) at Junction 15 of the M1 provides 465,000m² of warehousing and approximately 7,000 jobs.
Four neighbourhood plans have been adopted — Duston (2015), Spring Boroughs (2016), Growing Together (2017), and Semilong and Trinity (2025). CIL charges apply at approximately £74/m² for residential and £148/m² for retail. Pre-application advice costs £130 (written only) or £255 (with site visit), with specialist heritage advice available for conservation area and listed building proposals.
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What can I build in Northampton?
| Project type | Likely permitted development | May need planning permission | Likely needs planning permission |
|---|---|---|---|
| Rear extension (single storey) | Most of Northampton outside protected zones | Properties near boundaries | Conservation areas (20), Article 4 zones (2), listed buildings |
| Rear extension (two storey) | Most of Northampton outside protected zones, if within 3m limit | Check distance to boundary ≥7m | Conservation areas (20), Article 4 zones (2), listed buildings |
| Side extension | Detached houses outside protected zones | Semi-detached properties (half-width rule) | Conservation areas (20), Article 4 zones (2), listed buildings |
| Loft conversion (dormer) | Houses outside conservation areas and Article 4 zones | Properties on prominent corners or in Article 4 areas (Northampton Borough-wide HMO Article 4 Direction, Conservation Area Article 4 Directions) | Conservation areas (e.g. Abington Park, All Saints, Barrack Road), listed buildings, flats |
| Loft conversion (Velux/rooflight) | Most of Northampton outside conservation areas | Front-facing rooflights in conservation areas | Listed buildings, Article 4 areas |
| Outbuilding / garden office | Most of Northampton 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 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 Northampton (internal works) | If changing external appearance significantly | Listed buildings |
This is general guidance based on Northampton's planning constraints. Your specific property may differ — use our free PD checker to get a result tailored to your address.
Permitted development in Northampton
Permitted development rights in Northampton follow the national GPDO but are restricted in several important ways. Since November 2020, a borough-wide Article 4 direction removes permitted development rights for converting dwellings (C3) to small HMOs (C4), meaning planning permission is required for all HMO conversions across the former Northampton Borough. This was built up progressively from earlier area-specific directions covering Far Cotton, Delapre, Cliftonville, Sunnyside, and the northern and central areas. PD rights are also restricted in all 20 conservation areas, where controls on alterations to windows, doors, chimneys, fences, and exterior painting help preserve heritage character. Northampton's 450 listed buildings (16 Grade I, 28 Grade II*, 406 Grade II) always require listed building consent for works affecting their character. Contact West Northamptonshire Council on 0300 126 7000 or email planning@westnorthants.gov.uk for guidance on what you can do without planning permission.
What Northampton expects from your project
Northampton's built environment spans over 1,000 years of architectural history. The town's medieval heritage includes the remains of Northampton Castle (a Scheduled Monument, built 1084 by Simon de Senlis), the Church of the Holy Sepulchre (one of England's rarest Norman round churches), and St Peter's Church with its exceptional Norman carved capitals. The Great Fire of 1675 destroyed most of the medieval town centre, and the rebuilding produced fine late 17th-century architecture, particularly All Saints' Church (often described as the finest late 17th-century church outside London). The Georgian and Victorian periods brought grand civic buildings and the distinctive industrial architecture of the shoe trade. The Boot and Shoe Quarter has a unique concentration of Victorian shoe factories and workers' terraces. Modern architecture includes the award-winning University of Northampton Waterside Campus (opened 2018), featuring the UK's largest Passivhaus-certified student accommodation (900 beds). The town's shoe-making heritage stretches back to the 12th century, with a shoemakers' guild established in 1401, and Northampton supplied nearly 50 million pairs of shoes to the British Army during the two World Wars. The Northampton Museum and Art Gallery holds the world's largest shoe collection.
Local Plan: West Northamptonshire Local Plan Part 1: Joint Core Strategy
Northampton Borough Council was abolished in April 2021 when West Northamptonshire unitary authority was created. The former Northampton Borough area is now covered by the West Northamptonshire Local Plan (emerging). Saved policies from the former Joint Core Strategy and Northampton Local Plan Part 2 (2020) continue to apply.
Emerging / replacement plan
West Northamptonshire Council is preparing a new Local Plan covering the whole unitary area. A Regulation 18 consultation ran in 2022. A Regulation 19 Pre-Submission Plan consultation is expected in 2025-2026.
Conservation areas in Northampton
20 designated conservation areas
Northampton has 20 conservation areas reflecting the town's rich and diverse heritage. The All Saints Conservation Area centres on the magnificent Grade I listed All Saints' Church, rebuilt after the Great Fire of Northampton (1675) in the style of Christopher Wren's London churches. The Holy Sepulchre Conservation Area protects one of only four surviving round churches in England, dating from c.1100. The Derngate Conservation Area includes 78 Derngate, the only house in England designed by Charles Rennie Mackintosh (1916). The Boot and Shoe Quarter Conservation Area preserves the finest remnants of Northampton's world-renowned shoe-making industry, with Victorian factories and terraced workers' housing north and east of the town centre. Other significant areas include Abington Park (surrounding the Tudor manor house museum), Kingsthorpe (historic village now absorbed into the town), Delapre Park (surrounding the medieval Delapre Abbey), St Giles (around the Norman church), and Barrack Road (fine Victorian and Georgian terraces). The villages of Great Houghton, Hardingstone, Collingtree, Wootton, Great Billing, Duston, and Weston Favell each have their own conservation areas protecting their distinct village character within the borough boundary.
Article 4 directions in Northampton
2 Article 4 direction areas
Listed buildings in Northampton
There are 450 listed buildings in Northampton. 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 Northampton's conservation team before starting any work on a listed property.
Planning application statistics
Year ending March 2024 | Source: MHCLG planning application statistics
Northampton received 2,200 planning applications and decided 2,100 in the year ending September 2025. The approval rate of 85% is below 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.
The former Northampton Borough had a Housing Delivery Test score of 90% (covering 2018-2021), below the 95% threshold, requiring the production of a Housing Delivery Test Action Plan. West Northamptonshire Council has a CIL charging schedule for the Northampton area (in effect from 1 April 2016) with residential rates at £73.80/m² and retail rates at £147.61/m² (excluding the central zone). The council does not use CIL for all developer contributions, also relying on Section 106 agreements for site-specific infrastructure. Major growth is being delivered through the Sustainable Urban Extensions: Northampton South SUE (up to 3,000 dwellings, with over 1,000 under construction by Vistry and the final phase of 361 homes approved), Northampton West SUE (up to 2,550 dwellings under Policy N4), and Norwood Farm/Upton Lodge SUE (3,500 dwellings). The new West Northamptonshire Local Plan (Regulation 18 draft, January 2026) proposes 47,300 new homes across the council area for 2025-2043.
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 Northampton
Browse what's been approved near you
Seeing what similar projects have been approved near your property can help you understand what Northampton expects in terms of scale, materials, and design. It's also useful for gauging how quickly the council processes applications.
Search planning applications on Northampton'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 Northampton
Housing Delivery Test 2021 measurement | Source: MHCLG
Northampton delivered 1,620 homes against a requirement of 1,800 over the three-year measurement period, giving a Housing Delivery Test score of 90%. This is below the 95% threshold, which means Northampton 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 Northampton
A Lawful Development Certificate (LDC) is formal confirmation from Northampton 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.
Northampton decided 1,100 householder applications in the year ending march 2024. Their 8-week performance of 90% 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 Northampton
You can apply for a Lawful Development Certificate through the Planning Portal or directly through Northampton'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
Northampton 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 Northampton.
Pre-application advice in Northampton
Northampton offers a pre-application advice service. The fee for householder pre-app advice is Householder: £130 (written advice only, 6-week response). Householder with site visit: £255 (6-week response). Follow-up advice: £80. Listed Building advice: £130 (or £255 with site visit). Change of Use: £255 (or £385 with site visit). Trees and hedgerows: £110 (includes site visit).. You can typically expect a response within 6 weeks for all categories. Written response covering planning history, statutory designations, relevant policies, and informal advice on likely acceptability..
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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Check your PD rights now →Enquiries will not be validated until payment is received. Applicants should provide location plans, sketched or scaled drawings, and detailed drawings for complex proposals.
Planning fees and timelines in Northampton
| Application type | Fee | Typical timeline |
|---|---|---|
| Householder planning permission | £528 | 8-week determination target. Most common application type for home improvements in Northampton. |
| Lawful Development Certificate (proposed) | £264 | Confirms proposed works are permitted development. Recommended before starting work in conservation areas or near listed buildings. |
| Lawful Development Certificate (existing) | £298 | Confirms existing works or use are lawful. Useful when selling a property with undocumented alterations. |
| Listed building consent | Free | Required for any works affecting a listed building's character. Northampton has 450 listed buildings including 16 Grade I. |
| Prior approval (larger home extension) | £120 | For single-storey rear extensions up to 6m (semi/terrace) or 8m (detached). 42-day determination period. |
| Discharge of conditions | £145 per request | Required before commencing work subject to planning conditions. |
| Non-material amendment | £44 | For minor changes to an approved scheme that do not materially alter the development. |
| Full planning permission (no new dwellings) | £548 | For development not involving creation of new dwelling units. 8-week target for minor applications. |
Fees are set nationally and correct as of April 2026. Pre-application fees are set by Northampton and may change. Building regulations fees are separate — see the building control section below.
Building regulations in Northampton
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 Northampton is provided by West Northamptonshire Council Building Control. West Northamptonshire Council provides an in-house building control service (LABC member). Applications can be submitted through the LABC Front Door portal. Alternatively, you can appoint a private Registered Building Control Approver. You can also use a private approved inspector instead of the council's service.
Building control contact
Fees depend on the type and scale of building work. Contact the team on 0300 126 7000 for a quote or visit the LABC Front Door website for information.
Northampton planning department
Your building project checklist for Northampton
- Check if your property is in a conservation area — Northampton has 20 conservation areas. Use our free checker or see the list above.
- Check for Article 4 directions at your address — Northampton 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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