Extension builder estimates (based on hourly rates) to build a single storey extension in HP7
Range from the cheapest single storey extension £46640 (Steve Knight Construction based in HP15) to the dearest single storey extension £58000 (KATELL PROPERTY MAINTENANCE based in WD3).
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 HP7 by posting a job with HaMuch and we will send it to extension builders in HP7.
Estimates for common extension builder jobs in HP7;
| Job | Estimate |
| Underpinning a house | £17447 |
| Build a two storey extension | £87921 |
| Build a timber frame extension | £25947 |
| Install a swimming pool | £80947 |
| Cost to build a single storey extension | £48944 |
| Cost to build a side return extension | £36906 |
| Install an RSJ | £2147 |
| Build an outbuilding | £9947 |
| Build a mansard loft conversion | £51947 |
| Cost of a loft conversion | £33255 |
| Build a kitchen extension | £41947 |
| Build a hip to gable loft conversion | £41947 |
| Build a granny annexe | £86947 |
| Build a garden office | £9947 |
| Convert a garage | £15947 |
| Build a new garage | £18447 |
| Build a flat roof extension | £21947 |
| Build a dormer loft conversion | £41947 |
| Lay a concrete foundation | £6197 |
| Convert a bungalow loft | £28947 |
| Basement conversion cost | £36906 |