GS Renovation designs and builds extensions across Hillingdon, adding space to the borough's 1930s semis and interwar family homes on their generous plots. With over 30 years working in UB3, UB7, UB8, UB10, HA4 and HA6, we handle everything from single storey rear extensions in Ruislip to double storey and wrap-around additions around Uxbridge and Hayes.
Rear and side extensions in Hillingdon
Hillingdon's interwar semis were built on wider plots than inner London terraces, which often leaves room down the side for a side-return or full side extension as well as a rear addition. A popular project widens the kitchen into the side passage and pushes back into the garden, creating an open-plan kitchen-diner. We handle the groundworks and foundations, the steel beams over the new openings, the roof and the full fit-out.
Every extension starts underground. We dig and pour foundations to suit the ground conditions and any nearby trees or drains, a real consideration on the generous, planted plots common in Ruislip and Ickenham. From there we build the walls, tie in new steel, form the roof and weatherproof, then fit out inside so the new space flows naturally from the original house rather than feeling bolted on.
Planning and permitted development in Hillingdon
Many single storey rear extensions on Hillingdon semis fall under permitted development, meaning no full planning application, though larger ones may need prior approval and all must still meet building regulations. Larger, double storey or wrap-around projects, and anything to the front or in a conservation area near Uxbridge, usually need planning permission from Hillingdon Council. We advise which route your property falls under before any drawings are finalised.
Whichever route applies, building regulations always cover the structure, insulation, drainage and fire safety, and building control inspects the work in stages. On semi-detached and terraced homes the Party Wall Act often applies too, where foundations sit near the boundary or a new wall ties into the shared party wall. We coordinate planning, building control together so your Hayes or Uxbridge project moves smoothly from drawings to completion.
- Levels, drainage and landscaping made good around the new build
- Flat and pitched roofs with rooflights or lanterns
- Building control inspections at foundation, damp course and steel stages
- Single and double storey extensions
- Side-return and rear extensions
Why Choose GS Renovation in Hillingdon
GS Renovation is a genuine end-to-end builder for Hillingdon extensions, not a middleman. We manage the design, the foundations, the steel, the roof and the internal finish with one accountable team, and we know how the borough's interwar semis and their plots behave. With 30+ years across UB and HA postcodes, we deliver extensions that add real, lasting space.
- Free, no-obligation quotations
- Foundation depth set after trial holes, drains and trees are checked
- Waste cleared as we go, not left piled in the garden
- Insulation and thermal detailing to current regulations
- Party Wall notices served for excavation near a neighbour's wall
- A written scope and programme agreed before work starts