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Maida Vale

Single-storey rear extensions in Maida Vale typically start from £45,000–£60,000, while double-storey additions range from £85,000 to £110,000+. Costs sit higher than the outer London average given Westminster's labour and material rates. Factors like groundworks complexity, proximity to neighbouring properties, conservation area requirements, and the finish level you're after all influence the final figure. Buildaway provides a fully itemised quote after a free site survey, so you have a clear number before any commitment is made.

Not always, but it's more likely here than in many other parts of London. A significant portion of Maida Vale W9 falls within or immediately adjacent to conservation areas particularly around Warwick Avenue and the Little Venice canal basin where permitted development rights are reduced or removed entirely. Some rear and side return extensions can still proceed under prior approval, but others need a full planning application. Buildaway assesses your property's specific designation from the outset and manages whichever route is required, including all drawings, documentation, and council liaison.

We carry out single-storey rear extensions, side return extensions, double-storey additions, wrap-around extensions, and garage conversions across Maida Vale. The area's wide Edwardian terraces and semi-detached properties often have good potential for side returns and rear extensions, though the feasibility depends on your plot boundaries, existing structure, and what the council will approve. Our team surveys the property first and gives you an honest view of what's achievable rather than a sales pitch.

Single-storey extensions generally take 12–14 weeks on site from groundworks through to final finishes. Double-storey projects typically run 16–20 weeks depending on structural complexity and the number of trades involved. If a planning application is needed which is fairly common in Maida Vale given the conservation area coverage you'll need to allow an additional 8–12 weeks for the council's determination period. We factor all of this into your project schedule at the start, so the timeline is realistic and agreed upfront.

Yes, and for most Maida Vale extensions, you'll need one. The terraced and semi-detached nature of properties throughout W9 means that rear and side extensions almost always affect a shared boundary or wall. Buildaway manages the party wall notice process as a standard part of the project serving the correct notices, coordinating with adjoining owners, and where required, helping appoint an agreed surveyor. It's not something we leave you to deal with independently.

Yes the whole project runs through Buildaway. Our in-house architects produce the drawings, our structural engineers handle the calculations, and our own trades carry out the groundworks, brickwork, roofing, carpentry, electrics, plumbing, and finishing. There's no handoff between a separate design firm and a separate builder, which is where most projects run into delays and miscommunication. You have one contract and one team responsible for everything from the first site visit to Building Control sign-off.

Maida Vale falls within Westminster, which is consistently one of the more expensive boroughs to build in. Labour costs, material delivery logistics in a dense urban area, and the additional compliance requirements around conservation areas all push costs above what you'd pay in outer London. That said, property values across W9 are strong a well-designed and properly built extension in Maida Vale tends to add considerably more value than the build cost, making it a worthwhile investment for most homeowners who plan to stay or sell.