Extensions and loft conversions in Kingston upon Thames
Kingston upon Thames is largely a borough of 1930s semis and bungalows in New Malden, Tolworth, Chessington and Old Malden, with older Victorian and Edwardian streets around Norbiton, Surbiton and the town centre and substantial detached houses on Coombe and Kingston Hill. The most common briefs are a side extension to create a utility room and larger kitchen on a semi, a hip-to-gable loft with rear dormer, a single-storey rear extension across the back of a terrace, and a garden room.
Kingston’s housing stock lends itself well to permitted development, so a good share of our projects here go through the Lawful Development Certificate route rather than a full application. Where planning permission is needed, the design questions are mostly about the gap between houses and the relationship to neighbours’ windows.
Planning constraints in Kingston upon Thames
Kingston is less heavily designated than Richmond next door, but several constraints recur:
- Conservation areas in Kingston Old Town, Surbiton, Coombe and parts of New Malden, which remove PD for roof extensions.
- Article 4 directions in some conservation areas removing rights for front alterations; coverage varies, so we confirm with the council.
- Flood Zones 2 and 3 along the Thames and the Hogsmill.
- Green Belt at Chessington and Hook and Metropolitan Open Land along the Hogsmill and near Richmond Park.
- Residential design guidance on extensions, which officers apply to depth, height and the gap between semis.
Flats and maisonettes have no householder PD rights, so every extension to a converted house or mansion flat needs planning permission.
What Kingston planning officers look for
Kingston’s officers are protective of suburban street character. For side extensions they want the front wall set back from the main house, the roof set below the main ridge and enough of a gap to the boundary that the street does not read as a continuous terrace. For rear extensions they apply the 45-degree rule to neighbouring windows and expect depth to stay within what has already been approved nearby.
Two-storey rear extensions on semis are the most contested project type and often need to be narrower or shallower than the ground floor to be approved. For lofts, rear dormers set down from the ridge are generally supported; front dormers are not. Pre-application advice is available for a fee and worth using for two-storey schemes and anything near the river.
Our services in Kingston upon Thames
- Planning documentation for householder applications
- House extensions: rear, side, wraparound and two-storey
- Loft conversions: dormer, hip-to-gable and L-shaped
- Permitted development and Lawful Development Certificates
- Building Regulations drawings
- Outbuildings and garden rooms
Example projects nearby
- Loft conversion in Richmond upon Thames, nearby across the borough boundary
- Change of use in Croydon, nearby in south London
Guides
Read our guides on permitted development rights in London and whether you need planning permission for a rear extension in London.
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