Extension builder estimates (based on hourly rates) to build a single storey extension in BH4
Range from the cheapest single storey extension £35600 (ALWYN DOMINEY based in BH12) to the dearest single storey extension £46800 (All Build Developments Limited based in BH1).
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 BH4 by posting a job with HaMuch and we will send it to extension builders in BH4.
Estimates for common extension builder jobs in BH4;
| Job | Estimate |
| Underpinning a house | £17241 |
| Build a two storey extension | £87612 |
| Build a timber frame extension | £25741 |
| Install a swimming pool | £80741 |
| Cost to build a single storey extension | £44829 |
| Cost to build a side return extension | £34591 |
| Install an RSJ | £1941 |
| Build an outbuilding | £9741 |
| Build a mansard loft conversion | £51741 |
| Cost of a loft conversion | £31326 |
| Build a kitchen extension | £41741 |
| Build a hip to gable loft conversion | £41741 |
| Build a granny annexe | £86741 |
| Build a garden office | £9741 |
| Convert a garage | £15741 |
| Build a new garage | £18241 |
| Build a flat roof extension | £21741 |
| Build a dormer loft conversion | £41741 |
| Lay a concrete foundation | £5991 |
| Convert a bungalow loft | £28741 |
| Basement conversion cost | £34591 |