Garage conversion drawings in London
Garage conversion drawings for a London home cost from £645, or £745 where an Article 4 direction applies. Many conversions need no planning application, but all need Building Regulations approval. DrawingsDirect prepares both sets, and the lawful development certificate drawings if you want written proof the work is permitted.
Fixed fee from £445 drawings + £200 survey (£645 total) · all prices
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What the drawings are for
A garage becomes a habitable room only when it meets Building Regulations: insulated walls and floor, ventilation, fire safety and a new wall where the door was. The drawings show the existing garage, the proposed room and the construction detail the building control officer needs.
If the council also needs to see the scheme, the same plans and elevations support a planning application or a certificate of lawful development.
Do you need planning permission?
Often not, when the garage is attached and the work is internal, because the outside appearance barely changes. Three things can reverse that: an Article 4 direction that removes the right, a condition on the original planning permission that keeps the garage for parking, and a scheme that changes the front elevation beyond what the rules allow.
Our analysis of MHCLG planning application statistics, table PS1 (released 24 Sep 2026) shows that councils in England decided 84,906 certificates of lawful development across the eight quarters from 2024 Q3 to 2026 Q2. They are a routine way to settle the question, and a certificate is useful evidence when you sell.
Our analysis of MHCLG planning application statistics, table PS1 (released 24 Sep 2026) shows that councils in England decided 84,906 certificates of lawful development across the eight quarters from 2024 Q3 to 2026 Q2.
Timings you can plan around
For a full plans Building Regulations application the authority must notify the outcome within five weeks of receipt, or a longer period agreed in writing, under regulation 14A of the Building Regulations 2010.
A planning application that is not major development has a statutory decision period of 8 weeks from the day after receipt, under article 34 of the Development Management Procedure Order. The householder application fee is £548 from 1 April 2026.
What we charge
Our fixed fee for garage conversion drawings starts at £645. Where an Article 4 direction applies the fee starts at £745. A garage converted together with an extension starts at £1,095.
The council's own fees are separate and paid by you. The pricing page lists every service.
Garage conversions by area
Local rules differ between boroughs. See our area pages for Cricklewood NW2, Putney SW15 and Havering.
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) | drawingsdirect.co.uk |
| £1,095 | DrawingsDirect starting fixed fee for a garage conversion with an extension | drawingsdirect.co.uk |
| 84,906 | Our analysis of MHCLG planning application statistics, table PS1 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| £548 | Statutory fee from 1 April 2026, SI 2012/2920 Sch 1 Pt 2 category 6(1): householder application for alterations or extensions to a single dwellinghouse | assets.publishing.service.gov.uk |
| five weeks | Building Regulations 2010 reg 14A(6): authority must notify the outcome of a full plans application within five weeks of receipt, or a longer period agreed in writing (source wording: five weeks) | www.legislation.gov.uk |
| 8 weeks | DMPO 2015 art 34(2)(b): decision period for an application that is not major development (source wording: 8 weeks beginning with the day immediately following receipt) | www.legislation.gov.uk |
| £645 | DrawingsDirect starting fixed fee for garage conversion drawings, from the published price list | drawingsdirect.co.uk |
| £745 | DrawingsDirect starting fixed fee for garage conversion drawings where an Article 4 direction applies, from the published price list | drawingsdirect.co.uk |
Questions people ask
How much do garage conversion drawings cost?
Do I need Building Regulations approval to convert a garage?
What is a certificate of lawful development?
Photographs: GRALISTAIR (CC BY-SA 4.0).
