GS Renovation designs and builds extensions across Hendon, making the most of the generous plots that come with 1930s semi-detached and interwar suburban houses. With over 30 years of building experience in NW4 and the wider Barnet area, we handle groundworks, steel, roofing and the full fit-out as a single managed project.
Rear and side-return extensions in Hendon
The wide plots common to Hendon's interwar houses lend themselves to substantial rear and wrap-around extensions, and the space down the flank suits a side-return that widens a narrow kitchen into a proper family room. We start with the foundations and groundworks, form the new openings with engineer-designed steel beams, and tie the new roof cleanly into the existing structure.
Many of these projects fall under permitted development, which lets you extend without a full planning application, but some do not. A larger footprint, work to a corner plot, or anything affecting the street scene near Hampstead Garden Suburb can require planning permission from Barnet Council. We assess your specific property first so you know which route applies before any design is finalised.
Double-storey extensions on Hendon plots
Adding a storey over a Hendon semi gives an extra bedroom and often an en-suite without losing garden, which suits the family homes typical of NW4. A double-storey extension needs deeper foundations, steel beams sized by a structural engineer, and careful matching of brick and roof line so the addition sits comfortably with the interwar character of the street.
Where the extension meets the shared party wall with your neighbour, the Party Wall Act applies and you serve the correct notices early. Every extension, single or double storey, is built to the Building Regulations and inspected by building control. We manage the planning or permitted development question, the party wall matters, the structure and the internal finishes through to completion.
- Side-return and rear extensions
- Roof works and structural alterations at roof level
- Party Wall Act notices for excavation near a neighbour's wall
- Drainage diversion and build-over agreements with the water authority
- Building control inspections at foundation, damp course and steel stages
Why Hendon Homeowners Choose GS Renovation
Hendon families choose GS Renovation because we take an extension from groundworks to final decoration with one accountable team. We know how the borough's interwar plots and semis behave, we advise honestly on permitted development versus a Barnet Council application, we coordinate the work around the party wall award, and 30+ years locally means a tidy, well-built result.
- Registered in England, Companies House no. 14611254
- Waste cleared as we go, not left piled in the garden
- Permitted development checked before you pay for a planning application
- Site left safe and secure at the end of every day
- Free, no-obligation quotations
- Scaffolding and site set-up planned for tight London plots