Home Extension Builders in Dulwich

Home extension cost in Dulwich typically ranges from £52,000 to £125,000+. A single-storey rear extension (3m x 4m) costs £52,000–£72,000, larger single-storey extensions run £72,000–£92,000, side returns £42,000–£62,000, and double-storey extensions £92,000–£125,000+. Estate covenants and conservation area requirements can affect costs further. Buildaway provides full itemised home extension cost Dulwich breakdowns before work begins.

Home extension cost in Dulwich sits 25–35% above the UK national average, reflecting South East London labour rates, premium finishes expected in the area, and the additional planning considerations tied to the Dulwich Estate and conservation zones. A single-storey rear extension averaging £35,000–£50,000 nationally sits at £52,000–£72,000 in Dulwich. Buildaway offers fully transparent, no-hidden-fee estimates throughout.

Most home extensions in Dulwich complete within 14 to 22 weeks. Single-storey rear extensions take 12–14 weeks, side returns 10–12 weeks, and double-storey extensions 16–22 weeks. Estate consent applications and conservation area approvals — both relevant across much of Dulwich — may extend lead times beyond standard planning timelines. Buildaway prepares realistic schedules from the outset and maintains clear communication throughout.

Buildaway offers single-storey rear extensions, side return extensions, double-storey additions, wrap-around extensions, and garage conversions across Dulwich. Our home extension specialists assess your property's layout, estate covenant status, and Southwark planning conditions before recommending the most suitable approach and producing bespoke home extension plans in Dulwich.

We begin with a free site survey covering your property's structure, boundaries, drainage, estate covenant requirements, and local planning conditions. We discuss your home extension ideas and work through realistic costs for your property. Buildaway then prepares full architectural drawings, structural calculations, and manages all submissions to Southwark Council — through to Building Control completion certificates.

Yes — our in-house team of architects, structural engineers, and tradespeople handles everything: planning applications, estate consent, party wall agreements, Building Control submissions, and all construction trades. As a fully integrated home extension company in Dulwich, you deal with one dedicated team and a single point of contact from initial consultation right through to final handover.