Extension builder estimates (based on hourly rates) to build a single storey extension in BD21
Range from the cheapest single storey extension £34000 (Aire Valley Builders & Roofing Contractor based in BD16) to the dearest single storey extension £86800 (Diamond Construction (Glazing) based in HX6).
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 BD21 by posting a job with HaMuch and we will send it to extension builders in BD21.
Estimates for common extension builder jobs in BD21;
| Job | Estimate |
| Underpinning a house | £17132 |
| Build a two storey extension | £87448 |
| Build a timber frame extension | £25632 |
| Install a swimming pool | £80632 |
| Cost to build a single storey extension | £42646 |
| Cost to build a side return extension | £33364 |
| Install an RSJ | £1832 |
| Build an outbuilding | £9632 |
| Build a mansard loft conversion | £51632 |
| Cost of a loft conversion | £30303 |
| Build a kitchen extension | £41632 |
| Build a hip to gable loft conversion | £41632 |
| Build a granny annexe | £86632 |
| Build a garden office | £9632 |
| Convert a garage | £15632 |
| Build a new garage | £18132 |
| Build a flat roof extension | £21632 |
| Build a dormer loft conversion | £41632 |
| Lay a concrete foundation | £5882 |
| Convert a bungalow loft | £28632 |
| Basement conversion cost | £33364 |