Extension builder estimates (based on hourly rates) to build a single storey extension in B61
Range from the cheapest single storey extension £27600 (ARIAN HOME IMPROVEMENTS based in DY10) to the dearest single storey extension £45200 (Prestige Conversions based in B97).
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 B61 by posting a job with HaMuch and we will send it to extension builders in B61.
Estimates for common extension builder jobs in B61;
| Job | Estimate |
| Underpinning a house | £17006 |
| Build a two storey extension | £87259 |
| Build a timber frame extension | £25506 |
| Install a swimming pool | £80506 |
| Cost to build a single storey extension | £40125 |
| Cost to build a side return extension | £31945 |
| Install an RSJ | £1706 |
| Build an outbuilding | £9506 |
| Build a mansard loft conversion | £51506 |
| Cost of a loft conversion | £29121 |
| Build a kitchen extension | £41506 |
| Build a hip to gable loft conversion | £41506 |
| Build a granny annexe | £86506 |
| Build a garden office | £9506 |
| Convert a garage | £15506 |
| Build a new garage | £18006 |
| Build a flat roof extension | £21506 |
| Build a dormer loft conversion | £41506 |
| Lay a concrete foundation | £5756 |
| Convert a bungalow loft | £28506 |
| Basement conversion cost | £31945 |