Extension builder estimates (based on hourly rates) to build a single storey extension in WA15
Range from the cheapest single storey extension £35600 (Building Maintenance Services based in M44) to the dearest single storey extension £50000 (Goldcrest Finance based in M3).
Comparing extension builders estimates for fitting a downstairs toilet gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to build a single storey extension in WA15 by posting a job with HaMuch and we will send it to extension builders in WA15.
Estimates for common extension builder jobs in WA15;
| Job | Estimate |
| Underpinning a house | £17115 |
| Build a two storey extension | £87422 |
| Build a timber frame extension | £25615 |
| Install a swimming pool | £80615 |
| Cost to build a single storey extension | £42294 |
| Cost to build a side return extension | £33166 |
| Install an RSJ | £1815 |
| Build an outbuilding | £9615 |
| Build a mansard loft conversion | £51615 |
| Cost of a loft conversion | £30138 |
| Build a kitchen extension | £41615 |
| Build a hip to gable loft conversion | £41615 |
| Build a granny annexe | £86615 |
| Build a garden office | £9615 |
| Convert a garage | £15615 |
| Build a new garage | £18115 |
| Build a flat roof extension | £21615 |
| Build a dormer loft conversion | £41615 |
| Lay a concrete foundation | £5865 |
| Convert a bungalow loft | £28615 |
| Basement conversion cost | £33166 |