Extension builder estimates (based on hourly rates) to build a single storey extension in S8
Range from the cheapest single storey extension £45200 (A W Fascias based in S5) to the dearest single storey extension £170000 (C S Roofing & Building based in S8).
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 S8 by posting a job with HaMuch and we will send it to extension builders in S8.
Estimates for common extension builder jobs in S8;
| Job | Estimate |
| Underpinning a house | £17598 |
| Build a two storey extension | £88146 |
| Build a timber frame extension | £26098 |
| Install a swimming pool | £81098 |
| Cost to build a single storey extension | £51952 |
| Cost to build a side return extension | £38598 |
| Install an RSJ | £2298 |
| Build an outbuilding | £10098 |
| Build a mansard loft conversion | £52098 |
| Cost of a loft conversion | £34665 |
| Build a kitchen extension | £42098 |
| Build a hip to gable loft conversion | £42098 |
| Build a granny annexe | £87098 |
| Build a garden office | £10098 |
| Convert a garage | £16098 |
| Build a new garage | £18598 |
| Build a flat roof extension | £22098 |
| Build a dormer loft conversion | £42098 |
| Lay a concrete foundation | £6348 |
| Convert a bungalow loft | £29098 |
| Basement conversion cost | £38598 |