Extension builder estimates (based on hourly rates) to build a single storey extension in M16
Range from the cheapest single storey extension £41040 (Guardian Developments (Wall Removal Specialist) based in M3) to the dearest single storey extension £50000 (Goldcrest Finance based in M3).
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 M16 by posting a job with HaMuch and we will send it to extension builders in M16.
Estimates for common extension builder jobs in M16;
| Job | Estimate |
| Underpinning a house | £17130 |
| Build a two storey extension | £87445 |
| Build a timber frame extension | £25630 |
| Install a swimming pool | £80630 |
| Cost to build a single storey extension | £42595 |
| Cost to build a side return extension | £33335 |
| Install an RSJ | £1830 |
| Build an outbuilding | £9630 |
| Build a mansard loft conversion | £51630 |
| Cost of a loft conversion | £30279 |
| Build a kitchen extension | £41630 |
| Build a hip to gable loft conversion | £41630 |
| Build a granny annexe | £86630 |
| Build a garden office | £9630 |
| Convert a garage | £15630 |
| Build a new garage | £18130 |
| Build a flat roof extension | £21630 |
| Build a dormer loft conversion | £41630 |
| Lay a concrete foundation | £5880 |
| Convert a bungalow loft | £28630 |
| Basement conversion cost | £33335 |