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Select your affordable LL12 extension builder
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Experienced extension builder ready to quote for your work. Guest & Roberts is the best extension builder in LL12. No obligation free quotes and ma...
Relax... you have found a reliable extension builder in LL12. David Williams General Builder & Maintenance is a friendly and reliable company based...
From £17,516
Experienced extension builder ready to quote for your work. READ CONSTRUCTION HOLDINGS LTD is the best extension builder in LL12. No obligation fre...

Underpinning ranges from £17,516 (M Davies & Sons based in LL11) to £18,084 (David Williams General Builder & Maintenance based in LL11), 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 LL12 by posting a job with HaMuch and we will send it to extension builders in LL12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Wrexham | £34 | £263 |
| Underpin A Building near Wrexham Maelor | £34 | £261 |
| Underpin A Building near Vale Royal | £35 | £251 |
| Underpin A Building near Hawarden | £33 | £228 |
| Underpin A Building near Chester | £32 | £220 |
| Underpin A Building near Flintshire | £33 | £224 |
| Underpin A Building near Connah's Quay | £33 | £229 |
| Underpin A Building near Ellesmere Port | £31 | £214 |
| Underpin A Building near Heswall | £30 | £213 |
| Underpin A Building near Bebington | £31 | £222 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,666

Two storey extension - £88,249

Build a timber frame extension - £26,166

Build a swimming pool - £81,166

Single storey extension - £58,320

Side return extension - £43,368

Install an RSJ - £2,366

Outbuilding - £10,166

Build a Mansard loft conversion - £52,166

Loft conversion - £35,306

Build a kitchen extension - £42,166

Hip to gable loft conversion - £42,166

Granny annexe - £87,166

Garden office - £10,166

Convert a Garage - £16,166

Garage - £18,666

Build a flat roof extension - £22,166

Build a dormer loft conversion - £42,166

Concrete foundations - £6,416

Convert a bungalow loft - £29,166

Convert a basement - £39,368