From £16,756
Building & Flat Roofing Contractors is a trusted extension builder serving customers in LL55 and the surrounding area. Contact us to today to get a...
From £17,244
Fiting of door internal/external All joinery work from new joists to fitting off skirting boards Kitchen fitting Staircase or replac...
From £17,220
Need an Extension Builder in LL55? Hughes Construction has been helping local clients (20 mile radius) with their extension buildering jobs for man...
From £17,228
Need to find an Extension Builder near you for all your extension buildering work?
W F CLAYTON & CO LTD provides a local, trusted extension...
From £17,028
Glyndwr Roofing & Building Services are here to help customers who need an Extension Builder in LL55. We offer a competitive rate to complete all y...
From £17,020
Relax... you have found a reliable extension builder in LL55. Property Maintenance Solutions is a friendly and reliable company based in LL55 who c...
From £16,932
WJ Builders is an established and experienced local extension builder in LL55. Please contact us for a free, no obligation quote and competitive ra...
From £17,300
Need an Extension Builder in LL55? Chris's Roofing & Property Maintenance has been helping local clients (20 mile radius) with their extension buil...

Underpinning ranges from £16,756 (Building & Flat Roofing Contractors based in LL54) to £17,300 (Chris's Roofing & Property Maintenance based in LL31), 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 LL55 by posting a job with HaMuch and we will send it to extension builders in LL55.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Conwy | £24 | £184 |
| Underpin A Building near Conway | £24 | £184 |
| Underpin A Building near Llandudno | £24 | £184 |
| Underpin A Building near Colwyn Bay | £24 | £184 |
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 - £17,091

Two storey extension - £87,387

Build a timber frame extension - £25,591

Build a swimming pool - £80,591

Single storey extension - £46,820

Side return extension - £36,899

Install an RSJ - £1,791

Outbuilding - £9,591

Build a Mansard loft conversion - £51,591

Loft conversion - £29,916

Build a kitchen extension - £41,591

Hip to gable loft conversion - £41,591

Granny annexe - £86,591

Garden office - £9,591

Convert a Garage - £15,591

Garage - £18,091

Build a flat roof extension - £21,591

Build a dormer loft conversion - £41,591

Concrete foundations - £5,841

Convert a bungalow loft - £28,591

Convert a basement - £32,899