From £17,396
Barlam Drylining Ltd are here to help customers who need an Extension Builder in Brecon. We offer a competitive rate to complete all your extension...
From £17,372
Need an Extension Builder in Brecon? P.D.Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many yea...
From £17,228
Experienced extension builder ready to quote for your work. Limitlesskitchens is the best extension builder in Brecon. No obligation free quotes an...
From £17,300
Need to find an Extension Builder near you for all your extension buildering work?
A B CONSTRUCTION provides a local, trusted extension bui...
From £17,140
Brecon, LD3
DEREK REES BUILDING MAINTENANC is an established extension buildering business in Brecon. We come highly recommended and provide competitive quotes...
From £17,028
Need an Extension Builder in Brecon? A POWELL CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs...
From £17,324
Need an Extension Builder in Brecon? FORMWORK CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs...
From £17,244
Brecon, LD3
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,308
Dare Fitness is an established extension buildering business in Brecon. We come highly recommended and provide competitive quotes for your work.
From £17,084
Need to find an Extension Builder near you for all your extension buildering work?
Cherry Build Limited provides a local, trusted extension...

Underpinning ranges from £17,028 (A POWELL CONSTRUCTION LTD based in CF44) to £17,396 (Barlam Drylining Ltd based in CF45), 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 Brecon by posting a job with HaMuch and we will send it to extension builders in Brecon.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Tredegar | £30 | £217 |
| Underpin A Building near Ebbw Vale | £30 | £217 |
| Underpin A Building near Merthyr Tydfil | £33 | £220 |
| Underpin A Building near Aberdare | £32 | £212 |
| Underpin A Building near Rhondda, Cynon, Taff | £31 | £209 |
| Underpin A Building near Pontypool | £30 | £210 |
| Underpin A Building near Rhondda | £31 | £206 |
| Underpin A Building near Neath Port Talbot | £31 | £224 |
| Underpin A Building near Pontypridd | £33 | £211 |
| Underpin A Building near Cwmbran | £43 | £219 |
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 - £17,242

Two storey extension - £87,614

Build a timber frame extension - £25,742

Build a swimming pool - £80,742

Single storey extension - £49,848

Side return extension - £38,602

Install an RSJ - £1,942

Outbuilding - £9,742

Build a Mansard loft conversion - £51,742

Loft conversion - £31,335

Build a kitchen extension - £41,742

Hip to gable loft conversion - £41,742

Granny annexe - £86,742

Garden office - £9,742

Convert a Garage - £15,742

Garage - £18,242

Build a flat roof extension - £21,742

Build a dormer loft conversion - £41,742

Concrete foundations - £5,992

Convert a bungalow loft - £28,742

Convert a basement - £34,602