This page covers the western part of the borough — Clapham, Stockwell, Brixton and Clapham North and the streets around them. The stock here is largely Victorian terraces, Clapham's Georgian houses and mixed estate housing, and we prepare drawings across every one of those types for Lambeth Council.
The Clapham conservation areas govern the west, where the side-return extension is the signature project on the classic double-fronted and terraced houses around the Common. Whichever route your address falls under, we confirm it free at the measured survey and design to match the western Lambeth streetscape — from period rear and side-return extensions to rear-dormer and mansard loft conversions.


Every application in West Lambeth is decided by Lambeth Council. Householder applications carry a statutory 8-week determination; allow around 12–14 weeks from first call to decision once the measured survey, design and validation are included. We hold a 98% first-time approval rate across Lambeth.
Article 4 Direction: Borough-wide Article 4 for HMO conversions; plus office-to-residential restrictions.

Every Lambeth postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. Lambeth fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| SW9 | Brixton / Stockwell | Victorian terraces, post-war estates | Brixton / Stockwell sits wholly inside SW9, so Lambeth Council validates every drawing package submitted from an SW9 address. |
| 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 drawing package before submitting SW16 drawings. |
| SE1 | Bermondsey / Borough / Waterloo | Georgian terraces, post-war flats, new-build | Bermondsey / Borough / Waterloo is split at SE1. Either Southwark Council or Lambeth Council can determine a drawing package here, so the SE1 address is checked against both policies maps first. |
| SE5 | Camberwell | Georgian villas, Victorian terraces | A drawing package in Camberwell may land with Southwark Council or Lambeth Council — SE5 crosses the boundary, and the SE5 policies map decides it street by street. |
| SE19 | Upper Norwood / Crystal Palace | Victorian villas, Edwardian terraces | Upper Norwood / Crystal Palace is split at SE19. Either Croydon Council or Lambeth Council can determine a drawing package here, so the SE19 address is checked against both policies maps first. |
| SE21 | Dulwich Village | Georgian villas, Edwardian villas (Dulwich Estate) | Dulwich Village is split at SE21. Either Southwark Council or Lambeth Council can determine a drawing package here, so the SE21 address is checked against both policies maps first. |
| SW12 | Balham | Victorian and Edwardian terraces | A drawing package in Balham may land with Wandsworth Council or Lambeth Council — SW12 crosses the boundary, and the SW12 policies map decides it street by street. |
| SE11 | Kennington / Vauxhall | Georgian terraces, post-war estates | SE11 covers Kennington / Vauxhall only; Lambeth Council handles the drawing package, and Kennington / Vauxhall case officers apply the SE11 conservation-area map. |
Roof pitch, wall build-up and plot depth change every few Lambeth streets, and each one changes what a drawing package can achieve at that address.
How designation changes a Lambeth drawing package: Lambeth Council maintains 64 conservation areas, including Brixton Road, Kennington, Brockwell Park. Inside any of them a Lambeth drawing package 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. Herne Hill sets the tone for Lambeth casework.
What Article 4 removes near Lambeth: Borough-wide Article 4 for HMO conversions; plus office-to-residential restrictions. Before pricing a drawing package we check whether the SE11 address is inside the mapped area, because Lambeth Council draws the Lambeth boundary street by street rather than across the whole of Lambeth.
The building fabric around Lambeth: Victorian terraces in Clapham, Brixton, Herne Hill; Edwardian villas; 1930s and post-war estates in parts of Streatham; Georgian in Kennington. Mix of dense Victorian residential and post-war estate; strong conservation area coverage; generally design-led planning decisions. A drawing package in Lambeth is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Lambeth Council.
Sources for this Lambeth drawing package 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.
Direct answers to what homeowners in western Lambeth ask about drawings, permission and fees.
It depends on your exact address. Many single-storey rear and side-return extensions on unlisted houses in West Lambeth fall under Permitted Development, but The Clapham conservation areas govern the west, where the side-return extension is the signature project on the classic double-fronted and terraced houses around the Common. Flats, listed buildings and conservation areas always need full planning, decided by Lambeth Council. Article 4 in the borough: Yes — check your address. We confirm exactly which route applies to your property, free, at the survey.
The western half of Lambeth — around Clapham, Stockwell, Brixton and Clapham North — is characterised by Victorian terraces, Clapham's Georgian houses and mixed estate housing. We prepare planning and building-regulations drawings for every period represented here, designed to match the local streetscape and satisfy Lambeth Council.
Lambeth Council determines householder applications in 8 weeks; allow roughly 12–14 weeks end to end (survey, design, validation and determination). We hold a 98% first-time approval rate across Lambeth.
Extensions on a boundary plot can involve two authorities. Everything we draw and submit is listed for North Lambeth and All of Lambeth.
Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.

Before you commit, it is worth understanding what it costs and seeing why homeowners choose us. You can search the site to find the right fit, or set up your account to track your project. When you are ready, get a quote for your project — most homeowners have a fee in minutes — or contact us and a chartered technologist will be in touch.