Extension builder estimates (based on hourly rates) to build a single storey extension in B45
Range from the cheapest single storey extension £38800 (West Heritage Bricklayers based in B90) to the dearest single storey extension £42480 (Maya Designs Ltd based in B17).
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 B45 by posting a job with HaMuch and we will send it to extension builders in B45.
Estimates for common extension builder jobs in B45;
| Job | Estimate |
| Underpinning a house | £17061 |
| Build a two storey extension | £87341 |
| Build a timber frame extension | £25561 |
| Install a swimming pool | £80561 |
| Cost to build a single storey extension | £41213 |
| Cost to build a side return extension | £32557 |
| Install an RSJ | £1761 |
| Build an outbuilding | £9561 |
| Build a mansard loft conversion | £51561 |
| Cost of a loft conversion | £29631 |
| Build a kitchen extension | £41561 |
| Build a hip to gable loft conversion | £41561 |
| Build a granny annexe | £86561 |
| Build a garden office | £9561 |
| Convert a garage | £15561 |
| Build a flat roof extension | £21561 |
| Build a dormer loft conversion | £41561 |
| Lay a concrete foundation | £5811 |
| Convert a bungalow loft | £28561 |
| Basement conversion cost | £32557 |