Cost of underpinning in Gwynedd
If your home needs underpinning due to subsidence, it can be a worrying time for you. Luckily, specialist builders can help you underpin your house and stabilise it for years to come. But how much will it cost in Gwynedd?
Underpinning ranges from £16580 (Building & Flat Roofing Contractors based in LL54) to £17004 (Bryn Pritchard Ltd - Building Contractors based in LL51), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in Gwynedd by posting a job with HaMuch and we will send it to extension builders in Gwynedd.
Estimates for common extension builder jobs in Gwynedd;
| Job | Estimate |
| Underpinning a house | £16726 |
| Build a two storey extension | £86839 |
| Build a timber frame extension | £25226 |
| Install a swimming pool | £80226 |
| Cost to build a single storey extension | £34520 |
| Cost to build a side return extension | £28793 |
| Install an RSJ | £1426 |
| Build an outbuilding | £9226 |
| Build a mansard loft conversion | £51226 |
| Cost of a loft conversion | £26494 |
| Build a kitchen extension | £41226 |
| Build a hip to gable loft conversion | £41226 |
| Build a granny annexe | £86226 |
| Build a garden office | £9226 |
| Convert a garage | £15226 |
| Build a flat roof extension | £21226 |
| Build a dormer loft conversion | £41226 |
| Lay a concrete foundation | £5476 |
| Convert a bungalow loft | £28226 |
| Basement conversion cost | £28793 |
Rates for other Gwynedd trades
Extension Builders in Gwynedd
| Business name | Underpinning cost |
|---|---|
| Bryn Pritchard Ltd - Building Contractors, Garndolbenmaen, LL51 | £17004 |
| WJ Builders, Pwllheli, LL53 | £16620 |
| W A Mitchell, Caernarfon, LL54 | £16700 |
| Building & Flat Roofing Contractors, Caernarfon, LL54 | £16580 |