Kitchen Extension Cost in Peckham: 2026 Price Guide

Ask a local builder what the most common job in Peckham is, and a rear kitchen extension is usually near the top of the list - understandable given flat-fronted yellow stock brick terraces and semis around Rye Lane, with pockets of elegant 19th-century planned housing at Holly Grove across much of the area. Most homeowners are chasing the same thing: a proper kitchen-diner instead of a cramped galley kitchen.

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

None of these figures include the kitchen itself beyond a standard fit-out, so a higher-spec kitchen, bifold or sliding doors, a roof lantern and underfloor heating are all worth budgeting for separately on top.

What affects the price locally

In Peckham, 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 Rye Lane Peckham, Holly Grove and Peckham Hill Street conservation areas 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 matter too - the Victorian and Edwardian housing near Peckham Rye Park and Rye Lane was typically built on shallower footings than current standards expect, so a structural engineer often specifies extra depth that a modern property simply wouldn't need.

Do you need planning permission?

Permitted development covers a lot of single-storey rear extensions, but not without limits, and those limits bite harder on terraced and semi-detached houses than detached ones. Inside Peckham's conservation areas, expect those rights to be trimmed back further still - check with the London Borough of Southwark's planning department, or a builder who already works locally, before finalising a design.