House Extensions and Loft Conversions in Cockfosters
Suddeco designs, gets approval for and builds extensions, loft conversions and renovations across Cockfosters. 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 Cockfosters
Interwar and post-war detached and semi-detached houses with good-sized plots. Two-storey extensions, larger loft conversions, basements and whole-house remodels.
Green Belt land around Trent Park and parts of Hadley Wood limit how far a house can grow; this is checked before any drawing. We check your exact address with Enfield Council records before we draw anything, and price the whole job — design, approvals and build — in one estimate.
Where we work in Cockfosters
Cockfosters, Hadley Wood edges, Trent Park and Oakwood.
Postcodes: EN4 and N14
Part of the borough page.
A construction company near you in Cockfosters
Looking for a construction company near you in Cockfosters? Suddeco designs, gets approval for and builds extensions, lofts, renovations and new builds in Cockfosters — building company, general contractor and design and build firm in one team.
Cockfosters FAQs
Are you a construction company near me in Cockfosters?
Yes. Suddeco works across Cockfosters 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 Cockfosters?
Extensions, lofts, conversions, renovations and new builds in Cockfosters, with the drawings and approvals.
Do you build it yourselves?
Yes. Suddeco designs, handles planning and delivers the build with its own project management.



