Garage conversion drawings in Kingston upon Thames
Garage conversions in Kingston upon Thames need drawings that show the council what changes on the outside, because works affecting only the interior are not development. DrawingsDirect, MCIAT chartered architectural technologists, prepares garage conversion drawings from £645, and can support a lawful development certificate or a householder application.
Fixed fee from £445 drawings + £200 survey (£645 total) · all prices
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Interior work is not development; the front wall is the question
Section 55(2)(a) of the Town and Country Planning Act 1990 takes works that affect only the interior of a building, or that do not materially affect its external appearance, out of the definition of development. In a garage conversion the interior is the easy part. The infill under the old door, and any new window, is where the council looks.
That is why the first job on a Kingston garage is an existing and proposed elevation, drawn so the council or a solicitor can see exactly what changes at the front. Our guide to planning permission for a garage conversion covers the checks, and the garage conversion drawings service lists what is in the set.
Certificate or application: the fees
From 1 April 2026 a householder application costs £548 (SI 2012/2920, category 6(1), as indexed). A certificate of lawful development for a proposed project is half the full fee, £274 for a householder project; the £274 is our arithmetic on the published rule.
Our analysis of MHCLG planning application statistics, table PS1 (released 24 Sep 2026, quarters to 2026 Q2) counts 593 certificates of lawful development decided by Kingston over the eight quarters from 2024 Q3 to 2026 Q2, for every kind of work. The lawful development certificate drawings page explains what we prepare for one.
Our analysis of the Planning Inspectorate Casework Database (released 1 Oct 2026, Casework Database 2609) counts 169 householder appeals in Kingston decided between 2021 and 2026, and 44% were allowed.
Kingston's householder decisions
Our analysis of table PS2 (released 24 Sep 2026, quarters to 2026 Q2) shows Kingston decided 742 householder applications, including prior approvals, over the four quarters from 2025 Q3 to 2026 Q2, and 83% were granted. They are borough-wide numbers for all householder work and do not decide your case.
What happens when Kingston refuses
Our analysis of the Planning Inspectorate Casework Database (released 1 Oct 2026, Casework Database 2609) counts 169 householder appeals in Kingston decided between 2021 and 2026, and 44% were allowed. A refused applicant has a route to an independent inspector, and the drawings submitted first are the core of any appeal. Our guide to the planning appeal process shows how it runs.
Our analysis of the MHCLG Planning Data Platform (bulk snapshot retrieved 14 Aug 2026) finds 28 conservation-area entries for Kingston on the national register. Kingston's conservation area map shows whether your road is inside one.
Cost of the drawings
Our starting fixed fee is £645 for garage conversion drawings on the permitted development route. Other routes and combined projects are on the pricing page.
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 |
| 593 | Our analysis of MHCLG planning application statistics, table PS1 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 742 | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 83% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 169 | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 44% | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 28 | 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
Do garage conversions in Kingston upon Thames need planning permission?
How much is a lawful development certificate for a garage conversion in Kingston?
Does a garage conversion in Kingston upon Thames need building regulations?
Photographs: James Emmans (CC BY-SA 2.0); Peikko (Public Domain).
