Extension builder estimates (based on hourly rates) to build a single storey extension in W1F
Range from the cheapest single storey extension £46800 (We Love Build - Three Arches based in W1J) to the dearest single storey extension £48880 (Big Mamma based in W1F).
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 W1F by posting a job with HaMuch and we will send it to extension builders in W1F.
Estimates for common extension builder jobs in W1F;
| Job | Estimate |
| Underpinning a house | £17413 |
| Build a two storey extension | £87869 |
| Build a timber frame extension | £25913 |
| Install a swimming pool | £80913 |
| Cost to build a single storey extension | £48253 |
| Cost to build a side return extension | £36517 |
| Install an RSJ | £2113 |
| Build an outbuilding | £9913 |
| Build a mansard loft conversion | £51913 |
| Cost of a loft conversion | £32931 |
| Build a kitchen extension | £41913 |
| Build a hip to gable loft conversion | £41913 |
| Build a granny annexe | £86913 |
| Build a garden office | £9913 |
| Convert a garage | £15913 |
| Build a new garage | £18413 |
| Build a flat roof extension | £21913 |
| Build a dormer loft conversion | £41913 |
| Lay a concrete foundation | £6163 |
| Convert a bungalow loft | £28913 |
| Basement conversion cost | £36517 |