Earlsfield house extensions

Where we work near Earlsfield

Across SW12, SW17, SW18, SW19, we can visit, measure and advise. Nearby, we also take on projects in Tooting (2 miles), Wimbledon (2 miles), Putney (2 miles), Battersea (2 miles), Streatham (3 miles). For homes towards Surrey, Ewell is around 7 miles away.

• Tooting
• Wimbledon
• Putney
• Battersea
• Streatham

Planning and building control in Earlsfield

In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.

In England a two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.

In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.

Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.

Applications are decided by the local planning authority (your district, borough or unitary council).

Earlsfield extension prices at a glance

Use these Earlsfield guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.

What works best for Earlsfield houses?

In London, space is at a premium and gardens are often short, so side returns, wraparounds and carefully planned rear extensions tend to make the most of every metre.

The types we would usually look at first for a home in Earlsfield are kitchen extensions, side return extensions and wraparound extensions, depending on the garden and how the house is laid out.