From £16,932
Trusted and professional extension builder in Fishguard. Experienced in all extension buildering work and keeping within budget and on quote. Lawto...
From £16,684
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £16,820
Relax... you have found a reliable extension builder in Fishguard. D&O Construction Ltd is a friendly and reliable company based in Fishguard who c...
From £16,716
Experienced extension builder ready to quote for your work. Gainzy Builders is the best extension builder in Fishguard. No obligation free quotes a...
From £16,932
Relax... you have found a reliable extension builder in Fishguard. Norton Construction is a friendly and reliable company based in Fishguard who co...

Underpinning ranges from £16,684 (Cleaning Services - We Can Do It based in SA73) to £16,932 (Lawtons Property Services based in SA73), 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 Fishguard by posting a job with HaMuch and we will send it to extension builders in Fishguard.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Milford Haven | £18 | £159 |
| Underpin A Building near Pembrokeshire | £19 | £163 |
| Underpin A Building near Carmarthenshire | £26 | £205 |
| Underpin A Building near Carmarthen | £26 | £205 |
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 - £16,817

Two storey extension - £86,975

Build a timber frame extension - £25,317

Build a swimming pool - £80,317

Single storey extension - £41,336

Side return extension - £33,814

Install an RSJ - £1,517

Outbuilding - £9,317

Build a Mansard loft conversion - £51,317

Loft conversion - £27,345

Build a kitchen extension - £41,317

Hip to gable loft conversion - £41,317

Granny annexe - £86,317

Garden office - £9,317

Convert a Garage - £15,317

Garage - £17,817

Build a flat roof extension - £21,317

Build a dormer loft conversion - £41,317

Concrete foundations - £5,567

Convert a bungalow loft - £28,317

Convert a basement - £29,814