Rear Extensions

Bright and modern living space at the back of the house that has had a full rear home extension in Thames Ditton, Surrey

Thames Design & Build

Rear Extensions in Surrey & South West London

A rear extension is one of the most popular ways to add space to your home, creating an open-plan kitchen-diner or extra living area without the disruption of moving house.

Thames Design & Build provides rear extensions to properties located across South West London and Surrey, in areas including Kingston, Thames Ditton, Esher, Molesey, Walton-on-Thames, Cobham, Oxshott, Wimbledon, Richmond, Epsom, Leatherhead, Twickenham, Sheen, Kew, Dorking and Guildford. 

Key Rear Extension Facts

Typical size: 20–60m² depending on your property and requirements

Most projects take 12–16 weeks from groundworks to completion

Can be single storey or two-storey depending on your specific needs

Often carried out under Permitted Development (no planning permission required)

Outside seating area at the back of a modern rear extension of a home in Surrey.

Thames Design & Build

Our Process For Rear Extensions

We handle everything from initial design through to final completion. Your project starts with a site visit where we discuss your requirements and assess what’s possible. Our design team then creates detailed architectural drawings, which we submit for planning approval or building regulations as needed. Once approved, we provide a fixed-price quote covering all aspects of the build.

During construction, your dedicated site manager coordinates all trades and keeps you updated throughout. We handle structural work, electrics, plumbing, glazing, and all finishing trades. The result is a seamless extension that feels like it’s always been part of your home.

Ready to Transform Your Home?

Tell us about your plans for your home in Kingston, Wimbledon, Richmond, Esher, Cobham, Guildford and the surrounding areas. Our design and build team will guide you from first ideas through planning, approvals and construction.

Ready to Transform Your Home?

Tell us about your plans for your home. Our design and build team will guide you from first ideas through planning, approvals and construction.

How did you find us?