Extension builder estimates (based on hourly rates) to build a single storey extension in BR6
Range from the cheapest single storey extension £42000 (Karol Szymanski based in BR5) to the dearest single storey extension £48560 (Ha property services based in Br5).
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 BR6 by posting a job with HaMuch and we will send it to extension builders in BR6.
Estimates for common extension builder jobs in BR6;
| Job | Estimate |
| Underpinning a house | £17316 |
| Build a two storey extension | £87724 |
| Build a timber frame extension | £25816 |
| Install a swimming pool | £80816 |
| Cost to build a single storey extension | £46326 |
| Cost to build a side return extension | £35434 |
| Install an RSJ | £2016 |
| Build an outbuilding | £9816 |
| Build a mansard loft conversion | £51816 |
| Cost of a loft conversion | £32028 |
| Build a kitchen extension | £41816 |
| Build a hip to gable loft conversion | £41816 |
| Build a granny annexe | £86816 |
| Build a garden office | £9816 |
| Convert a garage | £15816 |
| Build a new garage | £18316 |
| Build a flat roof extension | £21816 |
| Build a dormer loft conversion | £41816 |
| Lay a concrete foundation | £6066 |
| Convert a bungalow loft | £28816 |
| Basement conversion cost | £35434 |