Extension builder estimates (based on hourly rates) to build a single storey extension in Osterley
Range from the cheapest single storey extension £46800 (All 4 Property based in TW7) to the dearest single storey extension £48880 (Lewis Interiors Limited based in TW7).
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 Osterley by posting a job with HaMuch and we will send it to extension builders in Osterley.
Estimates for common extension builder jobs in Osterley;
| Job | Estimate |
| Underpinning a house | £17390 |
| Build a two storey extension | £87835 |
| Build a timber frame extension | £25890 |
| Install a swimming pool | £80890 |
| Cost to build a single storey extension | £47798 |
| Cost to build a side return extension | £36262 |
| Install an RSJ | £2090 |
| Build an outbuilding | £9890 |
| Build a mansard loft conversion | £51890 |
| Cost of a loft conversion | £32718 |
| Build a kitchen extension | £41890 |
| Build a hip to gable loft conversion | £41890 |
| Build a granny annexe | £86890 |
| Build a garden office | £9890 |
| Convert a garage | £15890 |
| Build a new garage | £18390 |
| Build a flat roof extension | £21890 |
| Build a dormer loft conversion | £41890 |
| Lay a concrete foundation | £6140 |
| Convert a bungalow loft | £28890 |
| Basement conversion cost | £36262 |