Basement Conversion Drawings in Wandsworth

Which Wandsworth postcodes does this basement conversion service cover?

Every Wandsworth postcode district we draw in, the stock that dominates it and the authority that validates a basement conversion there. Wandsworth fees below are the statutory England rates for 2026, not basement conversion estimates.

Which Wandsworth neighbourhoods suit a basement conversion best?

Roof pitch, wall build-up and plot depth change every few Wandsworth streets, and each one changes what a basement conversion can achieve at that address.

• Roehampton (SW15) — basement conversion work in Roehampton means post-war estates, georgian villas. Roehampton is Modernist post-war estates, Georgian fragments. Georgian houses here already have a vault and a lower-ground floor throughout SW15. Wandsworth Council decides the Roehampton application, and Alton Estate anchors the Roehampton location plan.
• Clapham Junction (SW11) — basement conversion work in Clapham Junction means victorian terraces, mansion blocks. Clapham Junction is Victorian terraces, transport hub. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged throughout SW11. Wandsworth Council decides the Clapham Junction application, and Clapham Junction station anchors the Clapham Junction location plan.
• Battersea (SW8, SW11) — a basement conversion in Battersea starts from victorian terraces, new-build apartments, and Battersea reads as Victorian terraces, riverside regen at Power Station. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged in SW8. Wandsworth Council assesses Battersea basement conversions against its own Battersea character guidance, and the location plan we draw for Battersea references Battersea Power Station.
• Balham (SW12) — basement conversion work in Balham means victorian and edwardian terraces. Balham is Victorian and Edwardian terraces. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged throughout SW12. Wandsworth Council decides the Balham application, and Balham High Road anchors the Balham location plan.
• Tooting (SW17) — Edwardian terraces, vibrant high street defines Tooting, where edwardian terraces set what a basement conversion can do. Edwardian houses rarely have a usable cellar across SW17. Any Tooting basement conversion is validated by Wandsworth Council, with Tooting Market the usual Tooting reference point on the site plan.
• Wandsworth Common (SW17, SW18) — basement conversion work in Wandsworth Common means victorian villas and terraces. Wandsworth Common is Victorian villas around the common. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged throughout SW17. Wandsworth Council decides the Wandsworth Common application, and Wandsworth Common anchors the Wandsworth Common location plan.
• Earlsfield (SW18) — a basement conversion in Earlsfield starts from victorian terraces, and Earlsfield reads as Victorian terraced streets. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged in SW18. Wandsworth Council assesses Earlsfield basement conversions against its own Earlsfield character guidance, and the location plan we draw for Earlsfield references Earlsfield station.

Does Wandsworth planning policy restrict a basement conversion?

How designation changes a Wandsworth basement conversion: Wandsworth Council maintains 45 conservation areas, including Wandsworth Common, Clapham Common West, Tonsley. Inside any of them a Wandsworth basement 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. Nightingale Triangle sets the tone for Wandsworth casework.

Wandsworth and Article 4: Article 4 for HMO conversions covering the whole borough. A basement conversion planned at a SW11 address is checked against that direction first; Wandsworth Council publishes the Wandsworth extent, and the SW11 line rarely follows the Wandsworth boundary you would expect.

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 basement 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.

Which neighbouring authorities border Wandsworth?

• Richmond upon Thames — cross the Wandsworth boundary and Richmond Council takes the basement conversion instead, applying 72 conservation areas of its own around SW13. We re-price basement conversions at the Wandsworth edge because Richmond upon Thames policy and Wandsworth policy rarely align on basement conversion depth.
• Hammersmith and Fulham — cross the Wandsworth boundary and Hammersmith & Fulham Council takes the basement conversion instead, applying 45 conservation areas of its own around W6. We re-price basement conversions at the Wandsworth edge because Hammersmith and Fulham policy and Wandsworth policy rarely align on basement conversion depth.
• Westminster — adjoining Wandsworth, with 56 conservation areas centred on SW1. A basement conversion on the far side of the Wandsworth line is determined by Westminster City Council, so the Wandsworth quote for basement conversions is checked against Westminster guidance before it is issued.
• Lambeth — cross the Wandsworth boundary and Lambeth Council takes the basement conversion instead, applying 64 conservation areas of its own around SE1. We re-price basement conversions at the Wandsworth edge because Lambeth policy and Wandsworth policy rarely align on basement conversion depth.

Sources for this Wandsworth basement 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.