Extension builder estimates (based on hourly rates) to build a single storey extension in Three Rivers
Range from the cheapest single storey extension £46800 (Swan Windows & Son Limited based in WD3) to the dearest single storey extension £51600 (HEEKS CONSTRUCTION T/A 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 Three Rivers by posting a job with HaMuch and we will send it to extension builders in Three Rivers.
Estimates for common extension builder jobs in Three Rivers;
| Job | Estimate |
| Underpinning a house | £17414 |
| Build a two storey extension | £87871 |
| Build a timber frame extension | £25914 |
| Install a swimming pool | £80914 |
| Cost to build a single storey extension | £48285 |
| Cost to build a side return extension | £36535 |
| Install an RSJ | £2114 |
| Build an outbuilding | £9914 |
| Build a mansard loft conversion | £51914 |
| Cost of a loft conversion | £32946 |
| Build a kitchen extension | £41914 |
| Build a hip to gable loft conversion | £41914 |
| Build a granny annexe | £86914 |
| Build a garden office | £9914 |
| Convert a garage | £15914 |
| Build a new garage | £18414 |
| Build a flat roof extension | £21914 |
| Build a dormer loft conversion | £41914 |
| Lay a concrete foundation | £6164 |
| Convert a bungalow loft | £28914 |
| Basement conversion cost | £36535 |