Garage conversion drawings in Brockley
For a Brockley garage conversion, our drawings cost from £645. If the changes to the front of your house need an application, Lewisham decided 578 householder applications in the latest four quarters and granted 89% of them, and 95% of the non-prior-approval decisions came within 8 weeks.
Fixed fee from £445 drawings + £200 survey (£645 total) · all prices
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What Lewisham decides, and how quickly
Our analysis of MHCLG planning application statistics, table PS2 (released 24 Sep 2026, quarters to 2026 Q2) shows Lewisham decided 578 householder applications, including prior approvals, between 2025 Q3 and 2026 Q2. Granted applications made up 89% of them.
Excluding prior approvals, 95% of those householder decisions came within 8 weeks, in the same four quarters. These are borough-wide householder figures. They show how the department works and say nothing about a particular garage.
The interior-only exemption and why a Brockley garage door matters
Under section 55(2)(a) of the Town and Country Planning Act 1990, works that affect only the interior of a building, or that do not materially affect its external appearance, are not development. The test turns on the outside. A garage whose door is replaced by a window and a brick infill has a new front elevation, and Lewisham is the body that decides whether the change is material.
Our guide to planning permission for a garage conversion lists what to check first, including whether an Article 4 direction removes permitted development on your street.
Our analysis of the Planning Inspectorate Casework Database (released 1 Oct 2026, Casework Database 2609) counts 162 householder appeals in Lewisham decided between 2021 and 2026, with 30% allowed.
Two fees: certificate or application
A householder application costs £548 from 1 April 2026 (SI 2012/2920, category 6(1), as indexed). A certificate of lawful development for a proposed householder project costs half of that, £274, which is our arithmetic on the published rule.
The certificate is the quicker route to a written answer from the council when you are unsure whether permission is needed. See our lawful development certificate drawings for what that application contains.
Lewisham's appeal record and its conservation areas
Our analysis of the Planning Inspectorate Casework Database (released 1 Oct 2026, Casework Database 2609) counts 162 householder appeals in Lewisham decided between 2021 and 2026, with 30% allowed. That is a record across all householder work in the borough, and it is lower than the grant rate at first decision.
Our analysis of the MHCLG Planning Data Platform (bulk snapshot retrieved 14 Aug 2026) finds 30 conservation-area entries for Lewisham on the national register. Lewisham Council's conservation area map will show whether your SE4 street is inside one, and our glossary entry on conservation areas explains the effect.
Our fee for the drawings
On the permitted development route, a Brockley garage set is a fixed fee from £645. The garage conversion drawings service page shows what the set contains, and the pricing page covers the other routes.
Sources
Every figure on this page, where it comes from and a link to the original.
| Figure | Source | Link |
|---|---|---|
| £645 | DrawingsDirect starting fixed fee for garage conversion drawings (permitted development route), from the published price list | drawingsdirect.co.uk |
| only the interior | Town and Country Planning Act 1990 s55(2)(a): works that affect only the interior of a building, or do not materially affect its external appearance, are not development (source wording: "affect only the interior of the building, or") | www.legislation.gov.uk |
| £274 | Fees for planning applications in England from 1 April 2026 (MHCLG, SI 2012/2920 as annually indexed): certificate of lawful development for a proposed use or operation is half the full application fee; for a householder project that is half of £548 (source wording: "Half the Full Application fee"; the £274 is our arithmetic) | assets.publishing.service.gov.uk |
| £548 | Fees for planning applications in England from 1 April 2026 (MHCLG, SI 2012/2920 as annually indexed), category 6(1): householder application for the enlargement, improvement or alteration of a single dwellinghouse (source wording: £548) | assets.publishing.service.gov.uk |
| 578 | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 89% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 95% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 162 | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 30% | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 30 | Our analysis of MHCLG Planning Data Platform conservation-area and article-4-direction datasets (bulk snapshot retrieved 14 Aug 2026) | www.planning.data.gov.uk |
Questions people ask
Will Lewisham treat my Brockley garage conversion as development?
How can I find out whether Lewisham needs an application for my garage?
How often does Lewisham grant householder applications?
Photographs: David Hawgood (CC BY-SA 2.0).
