Fixed fee from £1,225. MCIAT chartered. Lambeth planning experienced. 1 postcode covered: SE27.
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.
West Norwood is Victorian terraces, Edwardian villas. The dominant stock — victorian terraces, edwardian villas — has specific constraints and opportunities for house extension drawings. Side returns sit better on bay-fronted Victorian terraces than on detached 1930s semis. Mansards work where the existing roofscape supports them. We design to the block, not the brochure.
Local context summary — Architectural Drawings London, MCIAT charteredMost house extension drawings projects in West Norwood fall under Permitted Development if the property is a house (not a flat), not listed, and not in a conservation area. Lambeth has an Article 4 Direction — Borough-wide Article 4 for HMO conversions; plus office-to-residential restrictions. We confirm eligibility free at the site survey.
Drawings: fixed fee from £1,225 (House Extensions). Construction cost is separate and depends on size, finish and structural complexity. For victorian terraces, edwardian villas (typical of West Norwood), expect £45,000–£85,000 build cost for a standard rear extension or loft, more for mansards or basements.
12–14 weeks from first call to Lambeth Council planning decision. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination.
West Norwood is characterised by victorian terraces, edwardian villas. We've delivered house extension drawings for every period represented here — the design choices vary significantly by stock.
Our first-time approval rate in Lambeth is 98%. Pre-application advice from Lambeth Council is built into our process when the case is borderline (conservation area, Article 4, listed).
Pick a slot that suits you. No obligation and no sales pressure — just straight answers on your planning route, fixed fee and timescale.
Every West Norwood postcode district we draw in, the stock that dominates it and the authority that validates a house extension there. West Norwood fees below are the statutory England rates for 2026, not house extension estimates.
| Postcode | Area | Dominant stock | What it means for a house extension |
|---|---|---|---|
| SE27 | West Norwood / Tulse Hill | Victorian terraces, Edwardian villas | West Norwood / Tulse Hill sits wholly inside SE27, so Lambeth Council validates every house extension submitted from an SE27 address. |
| SW4 | Clapham | Victorian terraces, Edwardian villas | Neighbouring Clapham, where house extension work is handled by the same Lambeth Council case officers. |
| SW2 | Brixton | Victorian terraces, post-war estates | Neighbouring Brixton, where house extension work is handled by the same Lambeth Council case officers. |
| SE24 | Herne Hill | Victorian villas, Edwardian terraces | Neighbouring Herne Hill, where house extension work is handled by the same Lambeth Council case officers. |
| SE11 | Kennington | Georgian terraces, post-war estates | Neighbouring Kennington, where house extension work is handled by the same Lambeth Council case officers. |
| SW16 | Streatham | Edwardian terraces, post-war flats | Neighbouring Streatham, where house extension work is handled by the same Lambeth Council case officers. |
| SW9 | Stockwell | Victorian terraces, post-war estates | Neighbouring Stockwell, where house extension work is handled by the same Lambeth Council case officers. |
| SE11 | Vauxhall | Regency terraces, modern apartments, post-war flats | Neighbouring Vauxhall, where house extension work is handled by the same Lambeth Council case officers. |
| SE27 | Tulse Hill | Victorian villas, Edwardian terraces | Neighbouring Tulse Hill, where house extension work is handled by the same Lambeth Council case officers. |
| SE1 | Waterloo | Georgian terraces, post-war flats, new-build | Neighbouring Waterloo, where house extension work is handled by the same Lambeth Council case officers. |
Roof pitch, wall build-up and plot depth change every few West Norwood streets, and each one changes what a house extension can achieve at that address.
West Norwood conservation designations: there are 64 across Lambeth Council, Brockwell Park, Streatham Hill, Clapham Common among them. Designation costs a West Norwood owner the permitted-development route: a house extension 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 West Norwood designation that most often changes a house extension design.
Article 4 and your West Norwood house extension: Borough-wide Article 4 for HMO conversions; plus office-to-residential restrictions. At a SE27 address that matters twice over, because Lambeth Council applies the direction unevenly across West Norwood — we read the West Norwood policies map for the exact SE27 address before quoting house extensions.
West Norwood 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 house extension route in West Norwood — construction, not postcode, sets what is achievable. House extensions in West Norwood start at £1,225 on a fixed fee, or £1,750 for the Complete package covering both Lambeth Council submissions.
Sources for this West Norwood house extension 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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