L-shaped dormer loft in Wandsworth

Which Wandsworth postcodes does this l shaped dormer service cover?

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

What changes about a l shaped dormer in each part of Wandsworth?

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

• Wandsworth Common (SW17, SW18) — a l shaped dormer in Wandsworth Common starts from victorian villas and terraces, and Wandsworth Common reads as Victorian villas around the common. Full-width rear dormers on Victorian terraces here are the default in SW17. Wandsworth Council assesses Wandsworth Common l shaped dormers against its own Wandsworth Common character guidance, and the location plan we draw for Wandsworth Common references Wandsworth Common.
• Earlsfield (SW18) — Victorian terraced streets defines Earlsfield, where victorian terraces set what a l shaped dormer can do. Full-width rear dormers on Victorian terraces here are the default across SW18. Any Earlsfield l shaped dormer is validated by Wandsworth Council, with Earlsfield station the usual Earlsfield reference point on the site plan.
• Putney (SW15) — a l shaped dormer in Putney starts from edwardian terraces, victorian villas, mansion blocks, and Putney reads as Edwardian terraces, riverside. Full-width rear dormers on Victorian terraces here are the default in SW15. Wandsworth Council assesses Putney l shaped dormers against its own Putney character guidance, and the location plan we draw for Putney references Putney Bridge.
• Southfields (SW18) — l shaped dormer work in Southfields means 1930s semi-detached, edwardian terraces. Southfields is 1930s semi-detached, grid plan. The deeper Edwardian rear slope takes a full-width dormer without breaching the 40 m³ or 50 m³ volume limits on most of these houses throughout SW18. Wandsworth Council decides the Southfields application, and Southfields station anchors the Southfields location plan.
• Tonsleys (SW18) — l shaped dormer work in Tonsleys means victorian terraces. Tonsleys is Victorian conservation area. Full-width rear dormers on Victorian terraces here are the default throughout SW18. Wandsworth Council decides the Tonsleys application, and Tonsley Hill anchors the Tonsleys location plan.
• Nightingale Triangle (SW12) — a l shaped dormer in Nightingale Triangle starts from edwardian terraces and villas, and Nightingale Triangle reads as Edwardian conservation area. The deeper Edwardian rear slope takes a full-width dormer without breaching the 40 m³ or 50 m³ volume limits on most of these houses in SW12. Wandsworth Council assesses Nightingale Triangle l shaped dormers against its own Nightingale Triangle character guidance, and the location plan we draw for Nightingale Triangle references Nightingale Lane.
• Roehampton (SW15) — l shaped dormer work in Roehampton means post-war estates, georgian villas. Roehampton is Modernist post-war estates, Georgian fragments. A dormer on a Georgian roof has to sit behind the parapet line to stand any chance of consent throughout SW15. Wandsworth Council decides the Roehampton application, and Alton Estate anchors the Roehampton location plan.

What local planning policy applies to a l shaped dormer in Wandsworth?

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

What Article 4 removes near Wandsworth: Article 4 for HMO conversions covering the whole borough. Before pricing a l shaped dormer 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.

What Wandsworth is built from: 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. That mix decides the l shaped dormer route in Wandsworth more than the postcode does.

Who decides a l shaped dormer on the edge of Wandsworth?

• Kingston upon Thames — cross the Wandsworth boundary and Kingston Council takes the l shaped dormer instead, applying 22 conservation areas of its own around KT1. We re-price l shaped dormers at the Wandsworth edge because Kingston upon Thames policy and Wandsworth policy rarely align on l shaped dormer depth.
• Richmond upon Thames — cross the Wandsworth boundary and Richmond Council takes the l shaped dormer instead, applying 72 conservation areas of its own around SW13. We re-price l shaped dormers at the Wandsworth edge because Richmond upon Thames policy and Wandsworth policy rarely align on l shaped dormer depth.
• Hammersmith and Fulham — adjoining Wandsworth, with 45 conservation areas centred on W6. A l shaped dormer on the far side of the Wandsworth line is determined by Hammersmith & Fulham Council, so the Wandsworth quote for l shaped dormers is checked against Hammersmith and Fulham guidance before it is issued.
• Westminster — the Westminster boundary runs against Wandsworth, so a l shaped dormer a street from Wandsworth is decided by Westminster City Council instead. Westminster runs 56 conservation areas across SW1 and its neighbours, which is why l shaped dormers priced for Wandsworth are re-checked against Westminster policy whenever the Wandsworth address sits on that edge.

Sources for this Wandsworth l shaped dormer 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.