Planning Permission in Cambridge
Non-Metropolitan District in East of England · Last updated April 2026
Cambridge is one of England's most architecturally distinguished cities, with a world-renowned university whose colleges and grounds form a globally significant heritage landscape. The city's 13 conservation areas and 838 listed buildings — including an exceptional 73 Grade I listed structures — create one of the most heritage-sensitive planning environments in the country.
With 19 Article 4 directions covering key areas and Green Belt surrounding the city, permitted development rights are restricted in many parts of Cambridge. The Greater Cambridge Shared Planning Service (shared with South Cambridgeshire) processes applications, achieving a 91.6% approval rate — well above the national average.
Cambridge's acute housing demand, driven by the university and the thriving biotech and technology sectors, creates significant development pressure. The council balances growth with heritage protection through detailed design guidance and strong conservation policies.
Planning a project in Cambridge? Start here.
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What can I build in Cambridge?
| 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 (13), Article 4 zones (19), 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 (13), Article 4 zones (19), listed buildings |
| Side extension | Detached houses outside protected zones | Semi-detached properties (half-width rule) | Conservation areas (13), Article 4 zones (19), 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 Cambridge | 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 Cambridge (internal works) | If changing external appearance significantly | Listed buildings |
This is general guidance based on Cambridge's planning constraints. Your specific property may differ — use our free PD checker to get a result tailored to your address.
Permitted development in Cambridge
Cambridge's 19 Article 4 directions cover areas where the council has withdrawn specific PD rights to protect neighbourhood character. Combined with 13 conservation areas covering much of the historic core, significant parts of Cambridge have restricted permitted development. The Green Belt wrapping around the city adds further constraints. However, residential areas in the north and east, such as King's Hedges and Cherry Hinton, generally retain full PD rights for standard householder works.
What Cambridge expects from your project
Local design guidance
Cambridge Residential Design Guide SPD
Local Plan: Cambridge Local Plan 2018
The Cambridge Local Plan 2018 was adopted in October 2018 and covers the city to 2031. It works alongside the South Cambridgeshire Local Plan to plan for the Cambridge sub-region as a whole, with policies supporting strategic growth at Cambridge North and the Cambridge Biomedical Campus.
Emerging / replacement plan
Cambridge City Council and South Cambridgeshire District Council are preparing a joint Greater Cambridge Local Plan. The Preferred Options (First Proposals) consultation ran in 2021, with the Regulation 19 plan expected for submission to the Planning Inspectorate in 2025.
19 Article 4 directions
Cambridge has applied Article 4 directions to 19 areas, which remove certain permitted development rights in those zones. Use our free checker to see if your property is affected.
91.6% approval rate
Cambridge approves 91.6% 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 Cambridge
13 designated conservation areas
Cambridge's 13 conservation areas protect the extraordinary architectural heritage of the city, from the medieval colleges along the Backs to the Victorian suburbs of De Freville and Chesterton. The Central Conservation Area covers the historic core including King's Parade, Trinity Street, and the Market Square. With 73 Grade I listed buildings — one of the highest concentrations in England — the city's heritage constraints are substantial. Any works to or near listed buildings require careful consideration.
Article 4 directions in Cambridge
19 Article 4 direction areas
Listed buildings in Cambridge
There are 838 listed buildings in Cambridge. 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 Cambridge's conservation team before starting any work on a listed property.
Planning application statistics
Year ending September 2025 | Source: MHCLG planning application statistics
Cambridge received 1,141 planning applications and decided 1,062 in the year ending September 2025. The approval rate of 91.6% 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.
Cambridge's 91.6% approval rate is significantly above the national average, reflecting a council that works constructively with applicants through pre-application advice. The 96.7% on-time rate for householder decisions and 93.9% delegation rate show efficient decision-making. The council received 1,141 applications and made 1,062 decisions, indicating strong demand in this economically dynamic city.
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 Cambridge
Browse what's been approved near you
Seeing what similar projects have been approved near your property can help you understand what Cambridge expects in terms of scale, materials, and design. It's also useful for gauging how quickly the council processes applications.
Search planning applications on Cambridge'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 Cambridge
Housing Delivery Test 2023 measurement | Source: MHCLG
Cambridge delivered 2,043 homes against a requirement of 1,785 over the three-year measurement period, giving a Housing Delivery Test score of 114%. This is above the 95% threshold, which means there are no government-imposed consequences for housing under-delivery. Planning applications in Cambridge are assessed on their own merits under standard planning policies.
Lawful Development Certificates in Cambridge
A Lawful Development Certificate (LDC) is formal confirmation from Cambridge 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.
Cambridge decided 518 householder applications in the year ending september 2025. Their 8-week performance of 96.7% 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 Cambridge
You can apply for a Lawful Development Certificate through the Planning Portal or directly through Cambridge'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
Cambridge 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
Find out instantly whether your project in Cambridge needs planning permission.
FROM £39Permitted Development Certificate Report
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Approval rates, decision patterns, Article 4 directions, fees & timelines, and council-specific tips for Cambridge.
Pre-application advice in Cambridge
Cambridge offers a pre-application advice service. The fee for householder pre-app advice is Varies by proposal type.
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 →The Greater Cambridge Shared Planning Service offers pre-application advice for householder and larger developments. A formal written response is provided within an agreed timescale.
Planning fees and timelines in Cambridge
| 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 Cambridge and may change. Building regulations fees are separate — see the building control section below.
Building regulations in Cambridge
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 Cambridge is provided by Cambridge City Council Building Control. You can also use a private approved inspector instead of the council's service.
Building control contact
Cambridge planning department
Your building project checklist for Cambridge
- Check if your property is in a conservation area — Cambridge has 13 conservation areas. Use our free checker or see the list above.
- Check for Article 4 directions at your address — Cambridge has 19 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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