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How much does a garage conversion cost?

6 min read
Oct '25 • by Heather

Quick summary

A garage conversion typically costs between £6,000 and £15,000 for a single garage and £12,000 to £30,000 for a double, based on a 15 to 30 square metre space, excluding VAT. Costs depend on factors like your existing layout and desired features, with prices covering work such as removing doors, installing windows, flooring, insulation, and possibly utilities.

If you are looking to create some space at home and are happy to part with your garage, then a garage conversion might be the ideal project for you.

Unlike extension alternatives, the garage conversion does not take up any valuable outside space as it only changes the existing structure. Their price tags can also seem very attractive when compared with other space-creating options...

How much does a garage conversion cost?

On average, when it comes to converting your garage, you can expect to pay:

Single garage (15m2): £6,000 - £15,000
Double garage (30m2): £12,000 - £30,000

However, like most home projects, each garage conversion is unique with costs dependent on your existing layout and project ideas. So here are just a few things you’ll need to consider beforehand…

How much will construction cost?