Question 1

What is a realistic budget for a side-return extension and kitchen overhaul on a Victorian terrace in Penge (SE20)?

Accepted Answer

Enclosing the side return on an SE20 terrace to extend the ground floor — groundworks, a structural steel or timber frame, an insulated roof with glazing or a lantern, and a new kitchen including cabinetry, worktops, appliances, and tiling — typically lands between £58,000 and £95,000. Where the side return is narrow, the structural approach and roof form matter significantly to the final cost; a full-width rear extension added alongside the side-return infill pushes the total higher. PrimeCraft produces a line-by-line cost breakdown covering every trade on the day of the site visit, so you know what each element costs before a contract is signed.

Question 2

Do SE20 terraces in Penge fall within a conservation area that would affect external alterations?

Accepted Answer

The majority of residential streets in SE20 sit outside conservation area designation and retain full permitted development rights for dormer windows, rear extensions, and minor external changes. Streets on the northern boundary of SE20 closest to Crystal Palace Park should be checked individually, since the Metropolitan Open Land designation around the park can influence what is permissible for adjacent properties. Bromley Council's interactive planning map holds the definitive answer for any SE20 address. PrimeCraft runs that check for every property at the survey stage and builds the consent position into the project scope before any drawings or structural calculations are instructed.

Question 3

How many metres can I extend a Victorian terrace to the rear in Penge (SE20) without full planning permission?

Accepted Answer

A single-storey rear extension of up to 3 metres on a terraced or semi-detached house in SE20 falls within standard permitted development and requires no planning application, provided height and materials conditions are met. Extensions between 3 and 6 metres deep qualify for prior approval under the larger homes extension scheme, which involves notifying Bromley Council and allowing neighbours 21 days to comment. Two-storey rear additions sit outside permitted development entirely and require a full planning application. Party-wall notices must be served on neighbours sharing a wall or within 3 metres of any proposed excavation. PrimeCraft handles the prior approval process and party-wall notices as part of the build.

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Commonquestions, Penge.

Let's talk through what you're planning.