How much does a Builder cost in Wales?
Typical costs for hiring a builder anywhere in Wales. Builders pricing is largely consistent across the UK, so the figures below are indicative national ranges. Your actual quote depends on job size, access and materials, so always get 2–3 quotes.
Builders in Wales: what our directory holds
Where they are: South Wales 1098 · North Wales 295 · West Wales 122 · Mid Wales 69
Counted from businesses listed on besttrades.wales, not a survey of the whole market — there are builders in Wales we have not listed yet. Supply affects price: in a region with few available builders, quotes sit toward the top of the ranges below.
Builder price guide, Wales
| Job type | Price range | Notes |
|---|---|---|
| Day Rate | £150 – £250/day | Per labourer |
| Single Storey Extension | £20000 – £50000 | Depends on size/spec |
| Loft Conversion | £25000 – £60000 | |
| Garage Conversion | £8000 – £20000 | |
| New Build Per M2 | £1500 – £3000/m² |
Indicative national ranges, not a besttrades.wales price survey — we have not recorded a published source for these figures, so treat them as a ballpark and get 2–3 quotes. Cost data across all trades was last updated 22 September 2026. Actual quotes vary by job complexity, access and contractor.
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Frequently asked questions
How much does a single-storey extension cost?
Typically £20,000–£50,000 depending on size, finish and groundworks. Get an FMB or TrustMark builder and a written spec.
How much does a loft conversion cost?
Usually £25,000–£60,000 for a dormer loft, including stairs, insulation and building control.
Do I need planning permission?
Many extensions fall under permitted development, but always check with your local Welsh council first.