Turn your unused Wandsworth garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulations drawings with Part L thermal compliance, structural calculations for any removed walls.
In Wandsworth — Extensive Victorian terraced streets — the classic London side-return extension opportunity; Edwardian villas around the commons; 1930s semi-detached in Southfields for the most part — a garage conversion drawings package is the full measured-survey-to-submission drawing set London Borough of Wandsworth needs in order to determine an application: existing and proposed plans, elevations and sections at 1:100 and 1:50, a location and site plan, and the supporting statements the case officer asks for.
Prepared and reviewed by the chartered technologist team at Architectural Drawings London — MCIAT chartered, £2m PI insured.Last reviewed 2026-08-03.


Turn your unused Wandsworth garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulations drawings with Part L thermal compliance, structural calculations for any removed walls.
Housing stock in Wandsworth: Extensive Victorian terraced streets — the classic London side-return extension opportunity; Edwardian villas around the commons; 1930s semi-detached in Southfields.
Character: Family-oriented, high side-return extension and loft conversion rates; planning department experienced with Victorian terrace modifications.
Article 4: Article 4 for HMO conversions covering the whole borough.
We check whether your Wandsworth garage conversion needs planning permission or qualifies as Permitted Development — most integral garages don't need planning.
Full laser-measured survey of the existing garage, plus adjacent rooms where walls are being removed.
Existing and proposed floor plans, elevations and sections at 1:50 — full council-ready specification.
Garage conversions must meet current energy-efficiency standards — upgraded insulation, glazing U-values, heating specification.
Steel beam and padstone design where garage doors are replaced with walls and windows, plus any load-bearing wall removals.
Full Plans submission to Wandsworth Council Building Control or an approved inspector with inspections coordinated through to completion certificate.

Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Move the controls for an indicative figure. It anchors your budget — it is not a quote. Every project is priced after a free survey.
Build costs are separate and quoted by your contractor. See our published fees.
Every Wandsworth postcode district we draw in, the stock that dominates it and the authority that validates a garage conversion there. Wandsworth fees below are the statutory England rates for 2026, not garage conversion estimates.
| Postcode | Area | Dominant stock | What it means for a garage conversion |
|---|---|---|---|
| SW15 | Putney / Roehampton | Edwardian terraces, Victorian villas, mansion blocks | SW15 covers Putney / Roehampton only; Wandsworth Council handles the garage conversion, and Putney / Roehampton case officers apply the SW15 conservation-area map. |
| SW17 | Tooting / Earlsfield | Edwardian terraces | Tooting / Earlsfield is split at SW17. Either Wandsworth Council or Merton Council can determine a garage conversion here, so the SW17 address is checked against both policies maps first. |
| SW18 | Wandsworth / Earlsfield / Southfields | Victorian villas and terraces | A garage conversion at an SW18 address in Wandsworth / Earlsfield / Southfields is determined by Wandsworth Council under its own Local Plan policies for Wandsworth / Earlsfield / Southfields. |
| SW4 | Clapham | Victorian terraces, Edwardian villas | Clapham is split at SW4. Either Lambeth Council or Wandsworth Council can determine a garage conversion here, so the SW4 address is checked against both policies maps first. |
| SW8 | South Lambeth / Nine Elms | Victorian terraces, new-build apartments | A garage conversion in South Lambeth / Nine Elms may land with Lambeth Council or Wandsworth Council — SW8 crosses the boundary, and the SW8 policies map decides it street by street. |
| SW16 | Streatham / Norbury | Edwardian terraces, post-war flats | SW16 straddles a boundary: Streatham / Norbury addresses fall to Lambeth Council or Wandsworth Council or Merton Council or Croydon Council, so confirm which authority validates the garage conversion before submitting SW16 drawings. |
| SW19 | Wimbledon / Colliers Wood | Victorian villas, Edwardian terraces | SW19 straddles a boundary: Wimbledon / Colliers Wood addresses fall to Merton Council or Wandsworth Council, so confirm which authority validates the garage conversion before submitting SW19 drawings. |
| SW11 | Battersea / Clapham Junction | Victorian terraces, mansion blocks | SW11 covers Battersea / Clapham Junction only; Wandsworth Council handles the garage conversion, and Battersea / Clapham Junction case officers apply the SW11 conservation-area map. |
Roof pitch, wall build-up and plot depth change every few Wandsworth streets, and each one changes what a garage conversion can achieve at that address.
How designation changes a Wandsworth garage conversion: Wandsworth Council maintains 45 conservation areas, including Wandsworth Common, Clapham Common West, Tonsley. Inside any of them a Wandsworth garage conversion cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Wandsworth Common sets the tone for Wandsworth casework.
What Article 4 removes near Wandsworth: Article 4 for HMO conversions covering the whole borough. Before pricing a garage conversion we check whether the SW11 address is inside the mapped area, because Wandsworth Council draws the Wandsworth boundary street by street rather than across the whole of Wandsworth.
Wandsworth housing stock: Extensive Victorian terraced streets — the classic London side-return extension opportunity; Edwardian villas around the commons; 1930s semi-detached in Southfields. Family-oriented, high side-return extension and loft conversion rates; planning department experienced with Victorian terrace modifications. Read that before choosing a garage conversion route in Wandsworth — construction, not postcode, sets what is achievable. Wandsworth Council charges £548 for a householder application and has 8 weeks to determine it.
Sources for this Wandsworth garage conversion page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.
Of 43 change-of-use appeals decided in Wandsworth over the window covering appeals decided 2016-2026, an appeal against Wandsworth succeeded more often than the London norm — 34.9% against 29.1% city-wide. 15 were allowed and 28 dismissed. Turning a garage or outbuilding into habitable space is usually decided as a change of use, and 43 such Wandsworth decisions were challenged far enough to reach an inspector.
Half of those Wandsworth appeals took more than 98 days to decide from the day the appeal started — time added on top of the council's own determination period, which is the argument for getting the application right first. 95.3% were decided by written representations rather than a hearing or inquiry, meaning the written case and the drawings were the whole of the evidence.
43 change-of-use appeals decided in Wandsworth. Source: Planning Inspectorate casework, OGL v3.0.
Direct answers to the questions Wandsworth homeowners ask every week about garage conversion drawings.
Start a free quote →Most integral garage conversions in Wandsworth do not require planning permission — they're classed as an internal alteration, which is not development under the TCPA 1990. However, if the conversion materially alters the external appearance (new windows, raising the roof), planning permission may be required. Detached garage conversions to habitable use always need planning. Article 4 Directions in Wandsworth may also affect eligibility. We confirm the planning route before quoting.
A Wandsworth garage conversion is one of the cheapest ways to add habitable space: our package covers the planning route assessment, building regulations drawings and structural calculations for the door opening. Build cost depends on whether the garage is integral or detached, and on insulation, flooring and services. See our fees.
Yes — every garage-to-habitable conversion in Wandsworth needs Building Regulations approval. Key requirements include minimum insulation values (Part L), fire safety and escape routes (Part B), damp-proofing (Part C), ventilation (Part F), and structural adequacy if removing the garage door opening.
Typically yes — a well-executed garage conversion in Wandsworth adds 10–15% to property value and costs far less per square metre than an extension. In areas where parking is not at a premium, converting an underused garage is one of the most cost-effective ways to gain living space.
A standard integral garage conversion in Wandsworth typically takes 4–6 weeks to build once drawings are approved. Our architectural package takes 3–4 weeks from instruction to Building Control submission. Total timeline: approximately 3–4 months from initial survey to completion.

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