Extension builder estimates (based on hourly rates) to build a single storey extension in LL42
Range from the cheapest single storey extension £32400 (WJ Builders based in LL53) to the dearest single storey extension £40080 (Bryn Pritchard Ltd - Building Contractors based in LL51).
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 LL42 by posting a job with HaMuch and we will send it to extension builders in LL42.
Estimates for common extension builder jobs in LL42;
| Job | Estimate |
| Underpinning a house | £16812 |
| Build a two storey extension | £86968 |
| Build a timber frame extension | £25312 |
| Install a swimming pool | £80312 |
| Cost to build a single storey extension | £36240 |
| Cost to build a side return extension | £29760 |
| Install an RSJ | £1512 |
| Build an outbuilding | £9312 |
| Build a mansard loft conversion | £51312 |
| Cost of a loft conversion | £27300 |
| Build a kitchen extension | £41312 |
| Build a hip to gable loft conversion | £41312 |
| Build a granny annexe | £86312 |
| Build a garden office | £9312 |
| Convert a garage | £15312 |
| Build a new garage | £17812 |
| Build a flat roof extension | £21312 |
| Build a dormer loft conversion | £41312 |
| Lay a concrete foundation | £5562 |
| Convert a bungalow loft | £28312 |
| Basement conversion cost | £29760 |
Rates for other LL42 trades
Extension Builders in LL42
| Business name | Single storey extension cost |
|---|---|
| Bryn Pritchard Ltd - Building Contractors, Garndolbenmaen, LL51 | £40080 |
| WJ Builders, Pwllheli, LL53 | £32400 |