House extension cost
in Maida Vale.
Maida Vale — W9 — north of Paddington, west of Regent's Park. Late-Victorian and Edwardian mansion blocks and red-brick terraces, with the canal cutting through Little Venice.
What makes extension work in Maida Vale distinct.
Housing: Edwardian mansion blocks, red-brick terraces, and a handful of grand villas on the canal.
Planning: Maida Vale Conservation Area covers the bulk of W9. Article 4 directions limit some PD rights on key streets.
Applications go to City of Westminster. We submit on your behalf and handle party wall awards, build-over agreements and conservation officer correspondence end-to-end.
The five extension types — W9 numbers.
All figures inclusive of design, planning, build, contingency and VAT. The Maida Vale multiplier (1.12×) reflects local labour, scaffolding logistics, conservation requirements and finish expectations.
The 2026 London Extension Cost Guide.
Borough-by-borough pricing, a full £200k cost breakdown, PD vs full planning explained, and the seven hidden costs to watch for in Maida Vale and beyond.
Send me the guide.
What Maida Vale homeowners ask us.
How much does a house extension cost in Maida Vale in 2026?
Typical 2026 Maida Vale ranges (inc. design, planning, build, contingency & VAT): side-return extensions £101k–£179k; single-storey rear £123k–£235k; wraparound £190k–£358k; double-storey rear £202k–£426k; basement £280k–£840k. The Maida Vale multiplier (1.12×) reflects local labour rates, scaffold logistics and finish expectations.
Do I need planning permission for an extension in Maida Vale?
Maida Vale Conservation Area covers the bulk of W9. Article 4 directions limit some PD rights on key streets. Outside conservation areas, single-storey rear extensions up to 3m (terrace/semi) or 4m (detached) usually qualify for permitted development. Side-returns, wraparounds, double-storey extensions and anything in a conservation area need full planning. Applications go to City of Westminster.
What extension type works best for Maida Vale houses?
Edwardian mansion blocks, red-brick terraces, and a handful of grand villas on the canal. On this housing stock, the most common 2VP extension is a single-storey rear or wraparound — adding 20–35 m² of open-plan kitchen-diner. Double-storey extensions become viable on properties with rear gardens deep enough to absorb the additional volume without overshadowing.
How long does an extension take in Maida Vale?
Allow 8–12 weeks for design and planning (longer in conservation areas), then 16–22 weeks on site for a single-storey, 22–30 weeks for a wraparound or double-storey, and 28–40 weeks for a basement. City of Westminster processes planning applications in approximately 8–13 weeks depending on backlog.
What hidden costs catch Maida Vale homeowners out on extensions?
In W9 the top items are: party wall awards (£1,000–£3,000 per neighbour — common on terraced streets), build-over agreements with Thames Water (£300–£1,500 where drains run beneath the proposed extension), conservation officer consultations, structural engineer fees, drainage and asbestos surveys, and VAT at 20% on top of the base build cost. All of these are itemised in our fixed-price quote.
Does 2VP work on Maida Vale extensions?
Yes — Maida Vale is within our core London catchment. Our studio is at 20 Dawes Road in Fulham, 5.5km from Maida Vale. We've delivered extensions across the W9 postcode and our subcontractor network covers Westminster. Free site visit, fixed-price quote, 10-year HomePro guarantee on the finished work.
Extension pricing for Maida Vale’s neighbours.
Twenty minutes on site in Maida Vale.
On us.
Nick Elias RIBA and Vladimir will visit your Maida Vale home, walk the site, check planning constraints, advise on PD vs full planning, and give you a realistic budget and programme — even if an extension isn’t the right move.
One number. Sixty seconds. No callback.
Price your Maida Vale extension using the same 2026 rate card we quote real clients with.
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