Free planning check
Free Lewisham planning permission check
Check in 23 seconds whether your Lewisham project needs planning permission, and what the council has approved near you. £995 planning drawings, paid only when the council approves. Council and Portal fees are paid separately at submission.
About the planning data
Checked against 20.6 million UK planning applications on file across 420 planning authorities. Approval rates from 2,343,419 decisions we classified across 181 councils in England.
Lewisham approval rates by project type
Historical approval rates in our archive, grouped by project type. These describe recorded decisions, not the chance of approval for your proposal. Checked against 20.6 million UK planning applications on file across 420 planning authorities. Approval rates from 2,343,419 decisions we classified across 181 councils in England.
| Project type | Approval rate | Decided |
|---|---|---|
| Single-storey rear extension | 77% | 4,139 |
| Two-storey rear extension | 70% | 705 |
| Wraparound extension | 83% | 729 |
| Side extension | 74% | 571 |
| Loft conversion and dormer | 69% | 713 |
| Rooflight | 86% | 2,030 |
| Outbuilding and garden room | 83% | 413 |
| Porch | 85% | 142 |
| Garage conversion | 92% | 110 |
| Basement | 81% | 770 |
| Window and door | 93% | 3,017 |
A rate is only shown where at least 8 applications of that type were decided; smaller samples are shown as unknown. Withdrawn and undecided records are excluded. These figures cover all recorded years, including records without a year. Full Lewisham approval rates.
Application guidance in Lewisham
Lewisham publishes separate validation checklists for houses, work to flats, certificates and larger home extensions. Its September 2026 page also advertises a consultation on proposed updates: distinguish consultation material from the requirements currently used for submission. The council also publishes guidance on Areas of Special Local Character.
- Lewisham conservation-area Article 4 directions
- Lewisham Brockley conservation-area appraisal
- Lewisham planning validation requirements
- Lewisham Areas of Special Local Character
Sources reviewed . Check the source maps, wording and effective dates against your property and proposed work.
Application records to compare
Selected archive records, not a representative sample or a prediction for your address. The descriptions below are archive excerpts and may be shortened; read the original decision and plans before relying on them.
- DC/24/137148 · Recorded approved (2026)
Construction of a single-storey rear extension and the reduction of the level of the patio at 205 Baring Road, SE12.
Open the council record for DC/24/137148 - DC/25/141415 · Recorded approved (2026)
Retrospective application for the construction of a single-storey rear extension at 8 Larch Close, SE8.
Open the council record for DC/25/141415
Compare the property type, works and application route. A scheme involving flats or several alterations is not directly comparable to a simple house extension. Read the archive's coverage and limitations.
Lewisham planning resources
Check the authority's current records for the property's planning history, application requirements and local restrictions.
Prepare for your planning application
Questions about planning in Lewisham
Do I need planning permission for my project in Lewisham?
Some house extensions, loft conversions and outbuildings can use permitted development rights in Lewisham, but size alone does not establish eligibility. Check the property type, previous extensions, planning conditions and the rules for the proposed work. Householder rights do not apply to flats. Conservation areas and Article 4 directions restrict particular rights; they do not automatically require an application for every change. Listed building consent is a separate requirement for works affecting a listed building's special interest.
What is the planning approval rate in Lewisham?
It depends on the project type. 77% of 4,139 decided single-storey rear extension applications in Lewisham were approved. 69% of 713 decided loft conversion and dormer applications in Lewisham were approved. Checked against 20.6 million UK planning applications on file across 420 planning authorities. Approval rates from 2,343,419 decisions we classified across 181 councils in England. Every project type is on the Lewisham approval rates page.
Read the official guidance on when permission is required, listed buildings and conservation areas and planning decision periods.
Approval rates are computed from 2,343,419 decided applications across 181 councils, published by each council. The free check is guidance from the public record, not a council decision.