Extension builder estimates (based on hourly rates) to build a single storey extension in Caerphilly
Range from the cheapest single storey extension £20880 (Leon Morgan based in NP12) to the dearest single storey extension £58000 (Parker Construction based in CF14).
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 Caerphilly by posting a job with HaMuch and we will send it to extension builders in Caerphilly.
Estimates for common extension builder jobs in Caerphilly;
| Job | Estimate |
| Underpinning a house | £16963 |
| Build a two storey extension | £87194 |
| Build a timber frame extension | £25463 |
| Install a swimming pool | £80463 |
| Cost to build a single storey extension | £39254 |
| Cost to build a side return extension | £31456 |
| Install an RSJ | £1663 |
| Build an outbuilding | £9463 |
| Build a mansard loft conversion | £51463 |
| Cost of a loft conversion | £28713 |
| Build a kitchen extension | £41463 |
| Build a hip to gable loft conversion | £41463 |
| Build a granny annexe | £86463 |
| Build a garden office | £9463 |
| Convert a garage | £15463 |
| Build a flat roof extension | £21463 |
| Build a dormer loft conversion | £41463 |
| Lay a concrete foundation | £5713 |
| Convert a bungalow loft | £28463 |
| Basement conversion cost | £31456 |