Quick Answer
A garage conversion is one of the cheapest ways to add living space to your home. At £10,000 to £20,000, it costs a fraction of an extension and usually does not need planning permission.When It WorksIf your garage is integral, structurally sound, and you have off-street parkin...
Key Information
- Last Updated:
- 19 Apr 2026
- Category:
- Renovations
- Reading Time:
- 1 min read
A garage conversion is one of the cheapest ways to add living space to your home. At £10,000 to £20,000, it costs a fraction of an extension and usually does not need planning permission.
When It Works
If your garage is integral, structurally sound, and you have off-street parking, a conversion makes excellent sense. You already have four walls, a roof, and foundations.
Cost Breakdown
A basic conversion costs £10,000-15,000. A higher spec with ensuite and underfloor heating runs £15,000-25,000.
Value Added
A well-done garage conversion adds 10-15% to your property value. On a £300,000 house, that is £30,000-45,000 of added value from a £15,000 investment.
Leave a Comment
Share your experience or ask a question about this article.
I'm thinking about converting my garage too, but I noticed you mention it's usually cheaper than extensions. Is that always the case? Would love to hear more specifics on when costs might exceed expectations.
I've just converted our garage in Bristol for £13k. It's now a lovely spare room. Added £40k to our house value too, just as you said!
Consider insulating the garage door cavity for added thermal efficiency. It's often overlooked but can significantly improve energy performance.