GS Renovation designs and builds extensions across Morden, adding space to the 1930s semi-detached and interwar houses that fill SM4. The generous plots here often leave room to the side and rear, and with 30+ years across Merton we manage groundworks, steelwork, roofing and fit-out as one continuous project.
Side-return and rear extensions in Morden
Because Morden's interwar semis sit on wider plots than the terraces closer to central London, a side-return or wrap-around extension can add a genuinely large kitchen-diner without swallowing the whole garden. We dig and pour foundations to suit the ground, tie the new walls into the existing structure, and fit steel beams where the old external wall is opened up to join old and new space.
A rear extension across the back of the house works well where families want to bring the kitchen, dining and living areas together and open onto the garden. We handle the roof, whether a warm flat roof with rooflights or a pitched tie-in, the glazing, and the full internal finish, so you deal with one team from the first trench to the final coat of paint.
Planning and permitted development in Morden
Many single storey rear and side extensions on Morden's semis fall under permitted development, which means no full planning application to Merton Council, though you may still need a lawful development certificate. Larger projects, double storey additions, anything close to a boundary or work on a property in a conservation setting can need full planning permission. We advise honestly on which route your house falls under before you commit.
Whatever the planning position, every extension has to meet building regulations for foundations, structure, insulation, drainage and fire safety, and Merton building control inspects at each stage. Where the new build affects the shared party wall with your neighbour, you serve the notices under the Party Wall Act. Planning and building regs are separate approvals, and we keep both on track from start to finish.
- Party Wall Act notices for excavation near a neighbour's wall
- Wrap-around extensions and infills
- Full fit-out, finishing and making good
- Planning applications and permitted development assessments
- Roof works and structural alterations at roof level
Why Morden Homeowners Choose GS Renovation
GS Renovation is a natural fit for Morden extensions because we self-deliver the structural core, the foundations, the steel and the roof, rather than subcontracting the hard parts. We guide you through permitted development or a Merton planning application, manage party wall matters, and finish the interior properly. Three decades of extensions across SM4 mean fewer surprises and a build that adds real value.
- Garden levels and access made good where the build meets outside
- One point of contact on the phone, not a call centre
- Weathertight shell reached before the fit-out begins
- Brick and mortar matched to the existing elevation
- Free, no-obligation quotations
- Itemised pricing, so you can see what every stage costs