Extension builder estimates (based on hourly rates) to build a single storey extension in BB18
Range from the cheapest single storey extension £29200 (J & G Construction based in BB4) to the dearest single storey extension £43280 (Liberty Design & Build Ltd based in BD16).
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 BB18 by posting a job with HaMuch and we will send it to extension builders in BB18.
Estimates for common extension builder jobs in BB18;
| Job | Estimate |
| Underpinning a house | £17020 |
| Build a two storey extension | £87280 |
| Build a timber frame extension | £25520 |
| Install a swimming pool | £80520 |
| Cost to build a single storey extension | £40400 |
| Cost to build a side return extension | £32100 |
| Install an RSJ | £1720 |
| Build an outbuilding | £9520 |
| Build a mansard loft conversion | £51520 |
| Cost of a loft conversion | £29250 |
| Build a kitchen extension | £41520 |
| Build a hip to gable loft conversion | £41520 |
| Build a granny annexe | £86520 |
| Build a garden office | £9520 |
| Convert a garage | £15520 |
| Build a new garage | £18020 |
| Build a flat roof extension | £21520 |
| Build a dormer loft conversion | £41520 |
| Lay a concrete foundation | £5770 |
| Convert a bungalow loft | £28520 |
| Basement conversion cost | £32100 |