Wraparound extensions in Richmond

Covering Richmond

Alongside Richmond, we also cover Isleworth, Hounslow (2 miles to the west) and Barnes.

Homes in London

London projects often mean working on period terraces with neighbours on both sides, tight access through the house and conservation area controls, so careful planning and party wall work matter as much as the build.

What is included in a wraparound extension in Richmond?

Because it removes two external walls, a wraparound needs careful structural design and a good plan for the corner where the steels meet. We design, apply for any permissions, build and finish the shell, and can fit the kitchen as part of the same contract.

Design, planning drawings and structural calculations
Party wall process with both neighbours if needed
Steel frame or goalpost for the corner opening

How much does a wraparound extension cost in Richmond?

Use these ranges to budget for wraparound extensions; the survey turns them into a fixed price for the agreed specification.

Wraparound extensions	Guide price incl. VAT
Standard specification	£3,400 to £3,800 per m²
Good specification	£3,800 to £4,250 per m²
High specification	£4,250 to £4,700 per m²

What approvals does a wraparound extension need in England?

Projects in England go through two separate checks. Planning (or confirmation that the work is permitted development) comes from the district, borough or unitary council, and building regulations approval comes from the council’s building control team or a registered building control approver. Where work touches a shared wall or digs near a neighbour’s foundations, the Party Wall etc. Act 1996 applies.

In England a wraparound extension is treated as one extension, and because it covers both the side and the rear it does not normally fit within permitted development. Most need householder planning permission, which usually takes around eight weeks once validated.

What should Richmond homeowners check first?

Both neighbours may need party wall notices.
An open-plan space this size needs a heating plan, often underfloor heating.

How does the project run?

Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.

Your questions answered

Does a wraparound need planning permission?

Usually yes. In England it combines a side and rear extension, which takes it outside permitted development in most cases.

Glazed roof or solid roof?

A mix usually works best: solid roof with rooflights over the kitchen and a glazed section over the dining area.

Can you visit a house in Richmond to quote?

Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.

Wraparound extensions in nearby towns

Learn more about wraparound extensions, or see every project we cover in Richmond.