Clapham — covered by Lambeth Council.
Planning permission drawings delivered by an MCIAT chartered team.
Building regulations drawings delivered by an MCIAT chartered team.
Loft conversion drawings delivered by an MCIAT chartered team.
House extension drawings delivered by an MCIAT chartered team.
Mansard roof extensions delivered by an MCIAT chartered team.
Garage conversion drawings delivered by an MCIAT chartered team.
Basement conversion drawings delivered by an MCIAT chartered team.
Structural calculations delivered by an MCIAT chartered team.
Measured building survey delivered by an MCIAT chartered team.
Party wall services delivered by an MCIAT chartered team.
Rear dormer drawings delivered by an MCIAT chartered team.


SW4 primarily covers Clapham in Lambeth. It also touches Wandsworth.
Decisions for SW4 are made by Lambeth Council. Standard Permitted Development rules apply for most rear extensions and loft conversions on terraced and semi-detached houses, unless the property is in a conservation area, is listed, or sits under an Article 4 Direction. Article 4 in Lambeth: Yes.
Building regs from £950. We do not charge hourly. Free site survey across all SW4 addresses.
From first call to planning decision: typically 12–14 weeks. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination. Lambeth Council timelines align with the national norm.
Clapham in SW4 is characterised by the housing stock of Lambeth — broadly victorian terraces in clapham, brixton, herne hill.

Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
Every SW4 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. SW4 fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| SW4 | Clapham | Victorian terraces, Edwardian villas | A drawing package in Clapham may land with Lambeth Council or Wandsworth Council — SW4 crosses the boundary, and the SW4 policies map decides it street by street. |
| SE11 | Kennington / Vauxhall | Georgian terraces, post-war estates | Adjoining district to SW4, also inside Lambeth for drawing package purposes. |
| SE24 | Herne Hill | Victorian villas, Edwardian terraces | Adjoining district to SW4, also inside Lambeth for drawing package purposes. |
| SE27 | West Norwood / Tulse Hill | Victorian terraces, Edwardian villas | Adjoining district to SW4, also inside Lambeth for drawing package purposes. |
| SW2 | Brixton Hill / Tulse Hill | Victorian terraces, post-war estates | Adjoining district to SW4, also inside Lambeth for drawing package purposes. |
| SW11 | Battersea / Clapham Junction | Victorian terraces, mansion blocks | Adjoining district to SW4, also inside Wandsworth for drawing package purposes. |
| SW12 | Balham | Victorian and Edwardian terraces | Adjoining district to SW4, also inside Wandsworth for drawing package purposes. |
| SW15 | Putney / Roehampton | Edwardian terraces, Victorian villas, mansion blocks | Adjoining district to SW4, also inside Wandsworth for drawing package purposes. |
| SW17 | Tooting / Earlsfield | Edwardian terraces | Adjoining district to SW4, also inside Wandsworth for drawing package purposes. |
Roof pitch, wall build-up and plot depth change every few SW4 streets, and each one changes what a drawing package can achieve at that address.
How designation changes a SW4 (Clapham) drawing package: Lambeth Council maintains 64 conservation areas, including Streatham Hill, Clapham Common, Herne Hill. Inside any of them a SW4 (Clapham) 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. Streatham Hill sets the tone for SW4 (Clapham) casework.
Article 4 and your SW4 (Clapham) drawing package: Borough-wide Article 4 for HMO conversions; plus office-to-residential restrictions. At a SW4 address that matters twice over, because Lambeth Council applies the direction unevenly across SW4 (Clapham) — we read the SW4 (Clapham) policies map for the exact SW4 address before quoting architectural drawings.
What SW4 (Clapham) is built from: 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. That mix decides the drawing package route in SW4 (Clapham) more than the postcode does, and it is what a Lambeth Council case officer reads first. A householder application costs £548 paid to Lambeth Council direct, with 8 weeks to a decision once validated.
How designation changes a SW4 (Clapham) drawing package: Wandsworth Council maintains 45 conservation areas, including Tonsley, Magdalen Park, Nightingale Triangle. Inside any of them a SW4 (Clapham) 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. Clapham Common West sets the tone for SW4 (Clapham) casework.
Article 4 and your SW4 (Clapham) drawing package: Article 4 for HMO conversions covering the whole borough. At a SW4 address that matters twice over, because Wandsworth Council applies the direction unevenly across SW4 (Clapham) — we read the SW4 (Clapham) policies map for the exact SW4 address before quoting architectural drawings.
What SW4 (Clapham) 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 drawing package route in SW4 (Clapham) more than the postcode does, and it is what a Wandsworth Council case officer reads first. A householder application costs £548 paid to Wandsworth Council direct, with 8 weeks to a decision once validated.
Sources for this SW4 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.
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