Extension builder estimates (based on hourly rates) to build a single storey extension in SW3
Range from the cheapest single storey extension £29840 (Morley Building Services based in SW3) to the dearest single storey extension £48880 (PDI Trade LTD based in SW3).
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 SW3 by posting a job with HaMuch and we will send it to extension builders in SW3.
Estimates for common extension builder jobs in SW3;
| Job | Estimate |
| Underpinning a house | £17363 |
| Build a two storey extension | £87795 |
| Build a timber frame extension | £25863 |
| Install a swimming pool | £80863 |
| Cost to build a single storey extension | £47261 |
| Cost to build a side return extension | £35959 |
| Install an RSJ | £2063 |
| Build an outbuilding | £9863 |
| Build a mansard loft conversion | £51863 |
| Cost of a loft conversion | £32466 |
| Build a kitchen extension | £41863 |
| Build a hip to gable loft conversion | £41863 |
| Build a granny annexe | £86863 |
| Build a garden office | £9863 |
| Convert a garage | £15863 |
| Build a new garage | £18363 |
| Build a flat roof extension | £21863 |
| Build a dormer loft conversion | £41863 |
| Lay a concrete foundation | £6113 |
| Convert a bungalow loft | £28863 |
| Basement conversion cost | £35959 |