Rear and Side Return Extensions in Wimbledon & South West London

The price follows:the size and depth;single or double storey;the structure (steel beams, foundations and glazing);the kitchen or rooms inside, and the finishes.Once your architect's drawings are ready, we send a written, itemised quote and a programme, so every part of the build is clear before it starts.

Many single-storey rear extensions fall under permitted development: up to 3 metres deep on a terraced or semi-detached house and 4 metres on a detached one. Through the council's prior approval, that becomes 6 and 8 metres. Side and wraparound extensions, and homes in conservation areas or under an Article 4 direction, often need planning permission. Your architect prepares the application, and we build to the approved plans.

Design and approvals come first: councils aim to decide householder applications within eight weeks. The build itself usually takes several months, depending on size and complexity, and your quote includes an estimated programme.

Yes, almost every extension needs it, covering foundations, structure, drainage, insulation, glazing and fire safety. We coordinate the building control inspections throughout the build, and you receive a completion certificate at the end.

Often, yes. If you build on or near the boundary, or dig foundations within three metres of a neighbour's, the Party Wall etc. Act 1996 applies. Your neighbours receive notice at least one month before the work, or two months for work on a shared wall, and they can agree or appoint a surveyor. It's one of the first things we look at in your home.

Good drawings make a better extension and a smoother approval. We work with your own architect or introduce one of the partner architects we build with. We stay involved from the first sketches, so the design is buildable and the quote is accurate.

A rear extension adds depth at the back.A side return fills the narrow passage beside a terraced house, often turning a galley kitchen into a wide, light room.A wraparound joins the two for the largest open-plan space.Each one is shaped to the plot, the light and the way you live, and we talk through the options at the survey.