Home Extensions in Hatfield

KV Design & Build Ltd designs and builds home extensions in Hatfield — managing the project from design and planning through to a completed, decorated, and snagged result. We take on rear extensions, side-return infills, double-storey additions, and wrap-around schemes, depending on what your property allows and your brief requires.

Hatfield: local property context

In Hatfield, rear single-storey kitchen-dining extensions and side-return infill extensions are the most popular projects here, given the terraced street layout. Mix of the original Hatfield new-town stock (post-war semi-detached and terraced housing from the 1950s–1960s) and older properties in Old Hatfield. Good Avenue and the established residential areas to the south and east have solid 1960s–1980s housing that suits refurbishment and extension. Extensions in this area need to sit well with the local streetscape and the character of the existing property, and we design ours accordingly — using materials and detailing that complement rather than clash with what is already there.

Why choose KV Design & Build in Hatfield?

Hatfield has conservation area coverage that means some works requiring only a permitted development notification elsewhere need full planning here. Our design team understands these requirements and designs extensions that achieve client goals while meeting the local authority's design guidance. Our Hertfordshire base means we are local to Hatfield and can respond quickly for site visits, meetings, and during the build itself. We include party-wall notice advice and building regulations management within our service.

Extensions — what we provide

Our extensions service is fully integrated: design, structural calculations, planning or PD notification, building regulations submission and sign-off, construction by our own teams and managed specialist trades, and final snagging. The finished extension is connected, decorated, and ready to use. We are Safe Contractor accredited and fully insured, and our NICEIC-registered electricians handle all electrical works within the build. Contact us for a free no-obligation site visit.