Rear Extensions — Open-Plan Living for London Homes
A single-storey rear extension remains one of the most transformative home improvements in London. Opening the back of a Victorian terrace to the garden — with bi-fold doors, a roof lantern, and an open-plan kitchen-diner-living space — changes not just how much space you have, but how you live in your home every day.
Prime Loft carries out rear extensions as a standalone service and as part of combined projects alongside loft conversions. A combined project — extending both upward and backward simultaneously — is often more cost-effective than two separate projects and creates the most dramatic whole-house transformation available.
A single-storey rear extension in London typically costs £35,000–£65,000 fully inclusive, depending on size and specification.
Under PD, single-storey extensions up to 4m (detached) or 3m (semi/terrace) are permitted in most London properties. Larger extensions require planning permission.
Yes — Prime Loft regularly carries out combined projects as a single fixed-price package. This is typically more cost-effective than two separate projects.
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