Extending a 1930s semi in Hayes is one of the most popular projects we take on. GS Renovation has over 30 years of experience building single and double storey extensions across UB3, and the generous interwar plots here often leave real room to the side and rear. We handle the design, groundworks, steel and fit-out from start to finish.
Rear and side extensions in Hayes
The wide plots typical of Hayes suit side-return and side infill extensions, because many 1930s semis have a gap between the house and the boundary that can be built into. A single storey rear extension opens the kitchen onto the garden, while a wrap-around scheme combines the side and rear to transform the whole ground floor. We dig and pour foundations to suit the ground, install any steel beams, then build up the walls, roof and openings.
Whether your extension is permitted development or needs a full planning application depends on the property, the size and how much has already been added. Many single storey rear extensions on these interwar plots fall under permitted development, but larger or two storey schemes, and anything near a boundary, may need permission from Hillingdon Council. We assess your home first, advise on the route, and prepare the drawings and applications accordingly.
Double storey extensions for Hayes families
Growing families in UB3 often want more than an extra room downstairs, so we build two storey side and rear extensions that add a bedroom or en-suite above a larger kitchen. On a 1930s semi this means matching the existing brick and roofline, tying the new structure into the old, and upgrading foundations where the extra load demands it. Building regulations cover the structure, insulation, drainage and fire safety throughout the works.
Because a second storey usually shares or sits close to the party wall with the neighbouring semi, these projects generally need Party Wall Act notices, which you serve early to keep things moving. We coordinate the structural engineer, the groundworks and the roof, then complete the full fit-out including plastering, electrics, heating and decoration. You deal with one team from the first survey to the final inspection by Hillingdon Council building control.
- First fix and second fix plumbing and electrics throughout
- Brickwork and mortar matched to the existing elevation
- Building control inspections at foundation, damp course and steel stages
- Side-return and rear extensions
- Single and double storey extensions
The GS Renovation Difference in Hayes
Families in Hayes choose GS Renovation because we manage the whole extension under one roof, from the planning route with Hillingdon Council to the steelwork and the finish. Our 30+ years across UB3 mean we know how these interwar semis are built, so we tie new to old cleanly and keep the site tidy while you live in the house.
- Founder-led team with 30+ years of hands-on experience
- Party Wall notices served for excavation near a neighbour's wall
- Itemised pricing, so you can see what every stage costs
- Insulation and thermal detailing to current regulations
- Materials priced at options, so you choose the finish
- Permitted development checked before you pay for a planning application