Extension builder estimates (based on hourly rates) to build a single storey extension in Sw
Range from the cheapest single storey extension £13200 (London Design And Build based in SW1A) to the dearest single storey extension £48880 (ALT CONSTRUCTION based in SW1W).
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 Sw by posting a job with HaMuch and we will send it to extension builders in Sw.
Estimates for common extension builder jobs in Sw;
| Job | Estimate |
| Underpinning a house | £17282 |
| Build a two storey extension | £87674 |
| Build a timber frame extension | £25782 |
| Install a swimming pool | £80782 |
| Cost to build a single storey extension | £45648 |
| Cost to build a side return extension | £35052 |
| Install an RSJ | £1982 |
| Build an outbuilding | £9782 |
| Build a mansard loft conversion | £51782 |
| Cost of a loft conversion | £31710 |
| Build a kitchen extension | £41782 |
| Build a hip to gable loft conversion | £41782 |
| Build a granny annexe | £86782 |
| Build a garden office | £9782 |
| Convert a garage | £15782 |
| Build a new garage | £18282 |
| Build a flat roof extension | £21782 |
| Build a dormer loft conversion | £41782 |
| Lay a concrete foundation | £6032 |
| Convert a bungalow loft | £28782 |
| Basement conversion cost | £35052 |