Extension builder estimates (based on hourly rates) to build a single storey extension in DA18
Range from the cheapest single storey extension £42000 (Roger Matharoo based in DA7) to the dearest single storey extension £48560 (GHOOSE LTD based in se28).
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 DA18 by posting a job with HaMuch and we will send it to extension builders in DA18.
Estimates for common extension builder jobs in DA18;
| Job | Estimate |
| Underpinning a house | £17342 |
| Build a two storey extension | £87762 |
| Build a timber frame extension | £25842 |
| Install a swimming pool | £80842 |
| Cost to build a single storey extension | £46832 |
| Cost to build a side return extension | £35718 |
| Install an RSJ | £2042 |
| Build an outbuilding | £9842 |
| Build a mansard loft conversion | £51842 |
| Cost of a loft conversion | £32265 |
| Build a kitchen extension | £41842 |
| Build a hip to gable loft conversion | £41842 |
| Build a granny annexe | £86842 |
| Build a garden office | £9842 |
| Convert a garage | £15842 |
| Build a new garage | £18342 |
| Build a flat roof extension | £21842 |
| Build a dormer loft conversion | £41842 |
| Lay a concrete foundation | £6092 |
| Convert a bungalow loft | £28842 |
| Basement conversion cost | £35718 |