Planning and building regulation drawings in Chessington (KT9)

Regular plots with gardens at the front and the back suit rear extensions, side extensions and hip-to-gable loft conversions. Because the pairs are consistent, front-elevation changes, roof forms and the gap between pairs are assessed against the rhythm of the street rather than the single house. Matching the original facing brick, render, tile-hanging and roof tiles makes the difference between new work that reads as part of the pair and one that looks bolted on. The gap between neighbouring semis is part of the street's rhythm and Kingston protects it, which limits how wide a two-storey side extension can be and may require it to be set back and set down.

We know of no conservation area in the district, and no area-specific Article 4 direction is published for it, so Kingston's ordinary householder rules and design guidance are the starting point. Shared party walls and the building lines of attached pairs bring neighbours' light and overlooking into play.

Planning in Chessington: what to know before you apply

In Chessington, Kingston looks at householder proposals against the cohesive suburban street rather than the individual house. Extension depth, height and coverage fall under the usual permitted development limits, and a single-storey rear extension that goes past them needs a full householder application. Because plots are regular but finite, the garden constrains how deep a single-storey rear extension can go before it needs an application. Two-storey side additions are read against the protected gaps between pairs, front elevations and roof forms against the settled rhythm of the road. Flats have no householder permitted development rights. Even with no known conservation area we still check designation and the council's Article 4 map for each address, and party wall and overshadowing issues are drawn into the scheme from the start.

Applications are decided by Royal Borough of Kingston upon Thames — its planning pages.