Garage conversion drawings in Bromley
A garage conversion in Bromley often needs no planning application, because swapping the garage door for a wall and window is usually permitted development, unless a condition or an Article 4 direction has removed that right. You still need accurate drawings, and our fixed fee for them starts from £645.
Fixed fee from £445 drawings + £200 survey (£645 total) · all prices
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Does a garage conversion in Bromley need planning permission?
Usually not for the common case. Replacing the garage door with a wall and window is an alteration to the house. It is normally permitted development under Class A of Part 1 of the General Permitted Development Order, as long as the new materials are of similar appearance to the rest of the house. A condition on your house's original permission, or an Article 4 direction, can take that right away, and either one turns the job into an application.
To find out which applies at your address, use Bromley Council planning, the pages of the London Borough of Bromley. They also say what to submit with an application; the national requirements apply.
Check whether your street sits in one of Bromley's 73 conservation areas
National planning data lists 73 live conservation-area entries for the London Borough of Bromley. Being in one does not by itself stop a garage conversion, but it is worth looking up, along with any Article 4 direction, before you commission drawings. The answer decides whether you are drawing for a certificate or for a full householder application.
Across the four quarters from 2025 Q3 to 2026 Q2 the council made 1,609 householder decisions and granted 79% of them.
A lawful development certificate costs £274, a householder application £548
A certificate of lawful development for a proposed use or operation is half the householder application fee. That fee is £548 for a single dwellinghouse in England, so the certificate is £274. It gives you the council's written confirmation that the conversion is lawful, which is useful when you sell.
Bromley decided 1,030 certificates of lawful development in the eight quarters from 2024 Q3 to 2026 Q2, so the route is well used in the borough. The council's fee is paid to the council. Ours is for the drawings.
If your garage does need an application, here is how Bromley has handled householder ones
Across the four quarters from 2025 Q3 to 2026 Q2 the council made 1,609 householder decisions and granted 79% of them. It decided 90% of householder applications within 8 weeks, not counting prior approvals. On appeal, 563 householder cases were decided between 2021 and 2026, and 37% of those were allowed.
These are borough-wide householder figures, not garage-only ones, and they describe past decisions. They are not a forecast for your garage.
What we draw, and what to send us
We draw the garage as it is now and as it will be: floor plans and elevations, with the new wall and window shown where the door is today. A garage turned into a habitable room is normally also checked under the Building Regulations, whatever the planning position.
Send us your postcode, photos of the garage door, the side wall and the inside, and what the room will be used for. The quote form on this page takes all of that.
If you are planning a garage extension in Bromley rather than a conversion, where the footprint or roof changes, check it against the permitted development limits first; outside them it needs a householder application.
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), with no VAT to add, from the published price list | drawingsdirect.co.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 |
| 1,609 | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 79% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 90% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 563 | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 37% | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 73 | 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 |
| 1,030 | Our analysis of MHCLG planning application statistics, table PS1 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
Photographs: Chris Whippet (CC BY-SA 2.0).
