Fixed-fee planning, building regulations, loft, extension and mansard drawings for properties in Clapham (SW4). MCIAT chartered. 30% below typical London architect rates.
MCIAT chartered drawings for planning, building regs, lofts and extensions — fixed fees 30% below typical London architects. Tell us what you need and we’ll reply the same working day.
Clapham is Victorian terraces around the common. The streetscape is dominated by victorian terraces, edwardian villas, which means design decisions — roofscape, rear glazing, side returns, mansards — must respect the period rhythm of the row. Lambeth planning (Lambeth Council) decides applications here. Borough-wide Article 4 for HMO conversions; plus office-to-residential restrictions.
From £840. Planning permission drawings delivered by an MCIAT chartered team.
From £840. Building regulations drawings delivered by an MCIAT chartered team.
From £1,225. Loft conversion drawings delivered by an MCIAT chartered team.
From £1,225. House extension drawings delivered by an MCIAT chartered team.
From £1,575. Mansard roof extensions delivered by an MCIAT chartered team.
From £995. Garage conversion drawings delivered by an MCIAT chartered team.
From £1,950. Basement conversion drawings delivered by an MCIAT chartered team.
From £350. Structural calculations delivered by an MCIAT chartered team.
From £540. Measured building survey delivered by an MCIAT chartered team.
From £450. Party wall services delivered by an MCIAT chartered team.
From £1,225. Rear dormer drawings delivered by an MCIAT chartered team.
Clapham sits within Lambeth, so applications are decided by Lambeth Council. Most single-storey rear extensions and side-returns on terraced or semi-detached homes in Clapham fall under Permitted Development — up to 3m deep (attached) or 4m (detached), under 4m high. Flats, listed buildings and conservation areas always require full planning. Article 4 status here: Yes. We check eligibility free at the site visit.
Clapham is characterised by Victorian terraces around the common. The dominant stock is Victorian terraces, Edwardian villas. We've drawn extensions and lofts for every period represented here — Victorian rear additions, Edwardian side returns, 1930s wrap-arounds, and contemporary infill where the streetscape allows.
Lambeth Council statutory determination is 8 weeks for householder applications. Validation typically adds 1–2 weeks. From your first call to a decision, expect 12–14 weeks total: 1 week measured survey, 2 weeks design, 1–2 weeks validation, 8 weeks determination. We've achieved a 98% first-time approval rate across Lambeth.
Loft conversion drawings in Clapham start at £1,225 for planning + building regs combined. Construction cost (separate from drawings) is £45,000–£75,000 for a standard rear dormer on a Victorian or Edwardian terrace, £65,000–£95,000 for a hip-to-gable plus dormer. We quote drawings as a fixed fee — no hourly creep.
Lambeth has 64 designated conservation areas. Nearest to Clapham: Clapham Common. In a conservation area, full planning is required for most external work (including roof additions, rendering, replacement windows). We prepare a Heritage Statement covering the conservation area's character appraisal.
Pick a slot that suits you. No obligation and no sales pressure — just straight answers on your planning route, fixed fee and timescale.
Every Clapham postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. Clapham 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. |
| SW2 | Brixton | Victorian terraces, post-war estates | Neighbouring Brixton, where drawing package work is handled by the same Lambeth Council case officers. |
| SE24 | Herne Hill | Victorian villas, Edwardian terraces | Neighbouring Herne Hill, where drawing package work is handled by the same Lambeth Council case officers. |
| SE11 | Kennington | Georgian terraces, post-war estates | Neighbouring Kennington, where drawing package work is handled by the same Lambeth Council case officers. |
| SW16 | Streatham | Edwardian terraces, post-war flats | Neighbouring Streatham, where drawing package work is handled by the same Lambeth Council case officers. |
| SW9 | Stockwell | Victorian terraces, post-war estates | Neighbouring Stockwell, where drawing package work is handled by the same Lambeth Council case officers. |
| SE11 | Vauxhall | Regency terraces, modern apartments, post-war flats | Neighbouring Vauxhall, where drawing package work is handled by the same Lambeth Council case officers. |
| SE27 | West Norwood | Victorian terraces, Edwardian villas | Neighbouring West Norwood, where drawing package work is handled by the same Lambeth Council case officers. |
| SE27 | Tulse Hill | Victorian villas, Edwardian terraces | Neighbouring Tulse Hill, where drawing package work is handled by the same Lambeth Council case officers. |
| SE1 | Waterloo | Georgian terraces, post-war flats, new-build | Neighbouring Waterloo, where drawing package work is handled by the same Lambeth Council case officers. |
Roof pitch, wall build-up and plot depth change every few Clapham streets, and each one changes what a drawing package can achieve at that address.
Clapham conservation designations: there are 64 across Lambeth Council, Brockwell Park, Streatham Hill, Clapham Common among them. Designation costs a Clapham owner the permitted-development route: a drawing package then needs a £258 householder application over 8 weeks, in place of the £120 prior approval route that takes 6 weeks. Brixton Road is the Clapham designation that most often changes a drawing package design.
Clapham and Article 4: Borough-wide Article 4 for HMO conversions; plus office-to-residential restrictions. A drawing package planned at a SW4 address is checked against that direction first; Lambeth Council publishes the Clapham extent, and the SW4 line rarely follows the Clapham boundary you would expect.
Clapham housing stock: 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. Read that before choosing a drawing package route in Clapham — construction, not postcode, sets what is achievable. Architectural drawings in Clapham start at £840 on a fixed fee, or £1,750 for the Complete package covering both Lambeth Council submissions.
Sources for this Clapham 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.
Fixed fee. MCIAT chartered. 98% first-time approval rate.
Start free quoteOr contact us about your project firstBefore you commit, it is worth understanding transparent fixed fees and seeing our 98% approval record. You can search by service or borough to find the right fit, or create a free account to track your project. When you are ready, get a quote in minutes — most homeowners have a fee in minutes — or contact us for a chat and a chartered technologist will be in touch.