From £17,052
maizxdesign is an established and experienced local extension builder in CA1. Please contact us for a free, no obligation quote and competitive rat...
From £17,740
Cmr Developments is an established and experienced local extension builder in CA1. Please contact us for a free, no obligation quote and competiti...
From £16,804
Need to find an Extension Builder near you for all your extension buildering work?
BUILDING TEC LIMITED provides a local, trusted extensio...
From £17,140
My DC Handyman is Washington DC's best handyman service. We offer repairs and renovations for residential and commercial properties around the DMV ...
From £17,156
M c trading is an established extension buildering business in CA1. We come highly recommended and provide competitive quotes for your work.
From £16,908
LLED CONSTRUCTION LTD is an established extension buildering business in CA1. We come highly recommended and provide competitive quotes for your wo...
From £17,084
HEDLEYS ROOFING T/A are here to help customers who need an Extension Builder in CA1. We offer a competitive rate to complete all your extension bui...
From £16,740
Relax... you have found a reliable extension builder in CA1. ASKEW CONSTRUCTION is a friendly and reliable company based in CA1 who consider no job...
From £17,028
Experienced extension builder ready to quote for your work. IAN PEARSON JOINER & BUILDER is the best extension builder in CA1. No obligation free q...
From £16,860
Experienced extension builder ready to quote for your work. PAUL LITTLE BUILDING MAINT is the best extension builder in CA1. No obligation free quo...

Underpinning ranges from £16,740 (ASKEW CONSTRUCTION based in CA4) to £17,740 (Cmr Developments based in CA2), 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 CA1 by posting a job with HaMuch and we will send it to extension builders in CA1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Carlisle | £24 | £204 |
| Underpin A Building near Dumfries | £20 | £164 |
| Underpin A Building near Dumfries & Galloway | £20 | £164 |
| Underpin A Building near Whitehaven | £22 | £221 |
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 - £17,051

Two storey extension - £87,327

Build a timber frame extension - £25,551

Build a swimming pool - £80,551

Single storey extension - £46,024

Side return extension - £36,451

Install an RSJ - £1,751

Outbuilding - £9,551

Build a Mansard loft conversion - £51,551

Loft conversion - £29,543

Build a kitchen extension - £41,551

Hip to gable loft conversion - £41,551

Granny annexe - £86,551

Garden office - £9,551

Convert a Garage - £15,551

Garage - £18,051

Build a flat roof extension - £21,551

Build a dormer loft conversion - £41,551

Concrete foundations - £5,801

Convert a bungalow loft - £28,551

Convert a basement - £32,451