House Extensions and Loft Conversions in Clapham
Suddeco designs, gets approval for and builds extensions, loft conversions and renovations across Clapham. Designed, approved and built by one team.
Side return · indicative renderPlanned around the house you have
Layouts shaped by the plot
Choose a layout that suits the plot, the structure and how you live.
Old and new join properly
Drainage, utilities and structural openings planned before they become snags.
Access kept in view
Residents, deliveries and trades all need a workable route through the site.
Start from a layout
What we build here
Nearby boroughs
What to know before building in Clapham
Victorian terraces and larger villas around the Common, many already extended at the back. Side-return and wraparound kitchens, L-shaped dormer lofts and basement lowering.
Clapham Old Town and the streets around the Common are conservation areas, so rear and roof designs are checked against the terrace. We check your exact address with Lambeth Council records before we draw anything, and price the whole job — design, approvals and build — in one estimate.
Where we work in Clapham
Clapham Old Town, Clapham North, Clapham Common and the Abbeville Village streets.
Postcodes: SW4
Part of the borough page.
A construction company near you in Clapham
Looking for a construction company near you in Clapham? Suddeco designs, gets approval for and builds extensions, lofts, renovations and new builds in Clapham — building company, general contractor and design and build firm in one team.
Clapham FAQs
Are you a construction company near me in Clapham?
Yes. Suddeco works across Clapham and every other London borough. We survey the site, draw and approve the design, and build it with our own team. Call 020 3633 8086 or book a free survey.
What construction work do you do in Clapham?
Extensions, lofts, conversions, renovations and new builds in Clapham, with the drawings and approvals.
Do you build it yourselves?
Yes. Suddeco designs, handles planning and delivers the build with its own project management.



