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:
- 6 Jun 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.
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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.
I'm thinking of converting my garage. However, the £20k top-end figure seems high compared to online estimates. Can anyone clarify if this includes all costs, such as architectural drawings and VAT?
I've been thinking about converting my garage into a cosy home office. Is it really as cheap as £10k, and can I DIY some parts to save money?
I'm seriously considering converting our garage in Bristol. At £15K it's much cheaper than moving for more space. Plus, with off-street parking, we won't miss the lost garage!
While the cost breakdown seems reasonable, I'm curious - does that £10k-£20k figure include any necessary structural work if the garage isn't already structurally sound?
Considering a garage conversion in Bristol? Remember to factor in off-street parking - it's tough enough finding spaces as is!
Just a heads-up on planning permission: even if not required, it's worth checking for restrictions on garage conversions in conservation areas. Always better safe than sorry!
A word of caution regarding planning permission – while it's often not required, if your garage is attached to your house and forms part of the original structure, you might need to check with your local council. It's always best to be safe rather than sorry.