Kitchen Extension Cost in Maida Vale: 2026 Price Guide

A single-storey rear kitchen extension is one of the most popular projects among homeowners in Maida Vale, where grand late-Victorian and Edwardian mansion flats and stucco-fronted terraces along Warrington Crescent and Formosa Street, set beside the Regent's Canal. It's usually the difference between a cramped galley kitchen and a proper kitchen-diner opening onto the garden.

Typical costs

• Small extension (up to 15m²): roughly £30,000-£45,000
• Medium extension (15-25m²): roughly £45,000-£70,000
• Larger or wraparound extension (25m²+): £70,000 upwards

These figures are a guide, not a quote - they cover building work, a standard fit-out, and typical finishes. Bifold or sliding doors, roof lanterns, underfloor heating and a higher-spec kitchen will all add to the total.

What affects the price locally

In Maida Vale, the biggest local factor is usually access. Many streets are close terraces with no side access, which means materials have to be carried through the house and skips have to sit on the road - both of which builders will price in. Properties within the Maida Vale conservation area, first designated in 1968 sometimes face tighter controls on matching brick, roofline and window styles to the existing building, which can add to material costs even for a rear extension that doesn't need planning permission.

Foundations are the other variable: older Victorian and Edwardian houses near Little Venice were often built on shallow footings, so a structural engineer may specify deeper or more extensive foundations than a newer property would need.

Do you need planning permission?

Many single-storey rear extensions fall under permitted development, but there are limits on how far you can extend without full planning permission, and those limits are usually tighter for terraced and semi-detached houses than detached ones. If your home is in one of Maida Vale's conservation areas, permitted development rights can be restricted further, so it's worth checking with the City of Westminster's planning department - or a builder who works in the area regularly - before you commit to a design.