Extension builder estimates (based on hourly rates) to build a single storey extension in NN15
Range from the cheapest single storey extension £10320 (Swift Serve Solutions Ltd based in NN8) to the dearest single storey extension £66000 (STRANDOR ROOFING LTD based in NN6).
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 NN15 by posting a job with HaMuch and we will send it to extension builders in NN15.
Estimates for common extension builder jobs in NN15;
| Job | Estimate |
| Underpinning a house | £17094 |
| Build a two storey extension | £87391 |
| Build a timber frame extension | £25594 |
| Install a swimming pool | £80594 |
| Cost to build a single storey extension | £41878 |
| Cost to build a side return extension | £32932 |
| Install an RSJ | £1794 |
| Build an outbuilding | £9594 |
| Build a mansard loft conversion | £51594 |
| Cost of a loft conversion | £29943 |
| Build a kitchen extension | £41594 |
| Build a hip to gable loft conversion | £41594 |
| Build a granny annexe | £86594 |
| Build a garden office | £9594 |
| Convert a garage | £15594 |
| Build a new garage | £18094 |
| Build a flat roof extension | £21594 |
| Build a dormer loft conversion | £41594 |
| Lay a concrete foundation | £5844 |
| Convert a bungalow loft | £28594 |
| Basement conversion cost | £32932 |