ePrivacy and GPDR Cookie Consent by Cookie Consent All you need to know about wraparound extensions

Wraparound extensions: everything you need to know about L-shaped extensions

3 min read
Oct '25 • by Molly-Sue Moore

Quick summary

A wraparound extension can cost roughly £90,000 to £150,000 depending on size, materials, and property type, with a typical build time of 3 to 4 months. Costs vary for flat, semi-detached, or Victorian terrace homes, and planning permission or party wall agreements may affect the process.

What is a wraparound extension?

Wraparound extensions take advantage of dead space towards the side of your home, as well as space to the rear of your property to create an L-shaped additional area to your existing property.

This addition can transform the amount of space available in your home and the possibilities with what you can do with it are endless.

What is the cost of a wraparound extension?

There is no perfect science when it comes to calculating the cost of any home extension as each one is so unique and the circumstances are so individual. There are a number of factors that could impact the cost to consider which include the following:

  • Your chosen contractors
  • Size of extension
  • Materials used

With that in mind, the experts at Resi offered us ballpark figures for how much each type of wraparound extension could cost:

Use our Quick Quote calculator to get a fast estimate of how much your wraparound extension plans could cost you.

Wraparound extension guide- costs

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