Extension builder estimates (based on hourly rates) to build a single storey extension in CF5
Range from the cheapest single storey extension £29200 (Penarth Loft Conversions Ltd based in CF64) 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 CF5 by posting a job with HaMuch and we will send it to extension builders in CF5.
Estimates for common extension builder jobs in CF5;
| Job | Estimate |
| Underpinning a house | £17027 |
| Build a two storey extension | £87291 |
| Build a timber frame extension | £25527 |
| Install a swimming pool | £80527 |
| Cost to build a single storey extension | £40547 |
| Cost to build a side return extension | £32183 |
| Install an RSJ | £1727 |
| Build an outbuilding | £9527 |
| Build a mansard loft conversion | £51527 |
| Cost of a loft conversion | £29319 |
| Build a kitchen extension | £41527 |
| Build a hip to gable loft conversion | £41527 |
| Build a granny annexe | £86527 |
| Build a garden office | £9527 |
| Convert a garage | £15527 |
| Build a new garage | £18027 |
| Build a flat roof extension | £21527 |
| Build a dormer loft conversion | £41527 |
| Lay a concrete foundation | £5777 |
| Convert a bungalow loft | £28527 |
| Basement conversion cost | £32183 |