How much does it cost to build a garage?
Garage cost depends on size and construction. Get an indicative all-in figure below, then build it into your project.
What building a garage involves
- 1Base and drainage
A level, load-bearing concrete base with drainage falls — the foundation of the whole build.
- 2Structure
Prefab/sectional panels are quick and cheap; brick or block matched to the house costs more but looks and lasts better.
- 3Roof, door and power
Roof covering, a garage door, and often power and light — factor those into the all-in cost.
A garage adds storage, parking and — down the line — conversion potential, all of which support value. Brick-built matched to the house is the version that adds value on a resale; a sectional garage is really just covered storage.
Garage build costs (indicative)
| Type | Size | Indicative cost |
|---|---|---|
| Prefab / sectional (single) | on a slab | £3,000 – £8,000 |
| Brick-built single | matched to house | £12,000 – £22,000 |
| Brick-built double | larger | £20,000 – £40,000 |
| Base / slab only | foundation | £1,500 – £4,000 |
Brick-built figures include base, walls, roof and a door. Planning may apply for larger/forward garages.
Frequently asked questions
How much does it cost to build a garage?+
A prefab single garage on a slab costs £3,000–£8,000; a brick-built single garage matched to the house £12,000–£22,000; a brick double £20,000–£40,000. The base, door and roof are all included in the brick figures.
Do I need planning permission for a garage?+
A garage within permitted-development limits (size, height, position — usually to the side or rear) often doesn't need permission. Forward of the house, in conservation areas, or over the limits, it will — check locally.
Related tools & guides
Want to know how these figures are calculated? See our cost methodology.
Cost figures shown are indicative estimates, not quotations. You are responsible for verifying all costs (obtain contractor quotes) and any figures submitted to a lender. ScopeWise is a documentation tool, not financial, tax, structural or planning advice. HMO compliance prompts are guidance only — confirm requirements with your local council, as standards and licensing vary by authority.