A wrap-around extension combines a side-return and a rear extension into one L-shaped addition — the most transformative way to open up a ground floor. We design and build them end to end across London.
A wrap-around extension "wraps" around the side and rear of your home, combining a side-return infill with a rear extension. It creates a large, open-plan kitchen, dining and living space and dramatically improves light and flow on the ground floor.
Because they cover more area, wrap-around extensions typically start from around £70,000 + VAT to build and add significant value and liveability. Our design and planning fee for combined projects starts at £3,000 — see pricing.
Wrap-around extensions almost always need householder planning permission because they exceed permitted development limits. Our 97% approval rate comes from designing with policy and neighbour impact in mind from the start.



Allow around 8–12 weeks for design and householder planning, then roughly 14–20 weeks on site.
If you want the biggest possible open-plan ground floor and have the side return to use, a wrap-around delivers far more space and light for the additional cost.
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