Extension builder estimates (based on hourly rates) to build a single storey extension in TW6
Range from the cheapest single storey extension £34000 (L.M Landscapes & Driveways based in Tw15) to the dearest single storey extension £51440 (West London Roofing Maintenance Ltd based in TW5).
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 TW6 by posting a job with HaMuch and we will send it to extension builders in TW6.
Estimates for common extension builder jobs in TW6;
| Job | Estimate |
| Underpinning a house | £17336 |
| Build a two storey extension | £87754 |
| Build a timber frame extension | £25836 |
| Install a swimming pool | £80836 |
| Cost to build a single storey extension | £46723 |
| Cost to build a side return extension | £35657 |
| Install an RSJ | £2036 |
| Build an outbuilding | £9836 |
| Build a mansard loft conversion | £51836 |
| Cost of a loft conversion | £32214 |
| Build a kitchen extension | £41836 |
| Build a hip to gable loft conversion | £41836 |
| Build a granny annexe | £86836 |
| Build a garden office | £9836 |
| Convert a garage | £15836 |
| Build a new garage | £18336 |
| Build a flat roof extension | £21836 |
| Build a dormer loft conversion | £41836 |
| Lay a concrete foundation | £6086 |
| Convert a bungalow loft | £28836 |
| Basement conversion cost | £35657 |