From £17,172
Custom Build Construction are here to help customers who need an Extension Builder in Gorseinon. We offer a competitive rate to complete all your e...
From £17,580
Worked in building all my working life.
Worked as a builder 30 plus year's.
Am a hands on builder. Have built hou...
From £17,132
Building Service Controls Ltd is an established and experienced local extension builder in Gorseinon. Please contact us for a free, no obligation q...
From £17,348
Rowan Evans Building Contractors is an established extension buildering business in Gorseinon. We come highly recommended and provide competitive q...
From £17,516
Relax... you have found a reliable extension builder in Gorseinon. Signature Project Solutions Ltd is a friendly and reliable company based in Gors...
From £17,500
Experienced extension builder ready to quote for your work. Improve Not Move is the best extension builder in Gorseinon. No obligation free quotes ...
From £17,236
The Rod Squad is a trusted extension builder serving customers in Gorseinon and the surrounding area. Contact us to today to get a competitive quot...
From £17,468
Relax... you have found a reliable extension builder in Gorseinon. Home Maintenance & Improvement is a friendly and reliable company based in Gorse...
From £17,148
Relax... you have found a reliable extension builder in Gorseinon. R M R BUILDING CONTRACTORS is a friendly and reliable company based in Gorseinon...
From £17,276
KAW Developments is a trusted extension builder serving customers in Gorseinon and the surrounding area. Contact us to today to get a competitive q...

Underpinning ranges from £17,132 (Building Service Controls Ltd based in SA5) to £17,580 (Apex Building Services based in SA4), 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 Gorseinon by posting a job with HaMuch and we will send it to extension builders in Gorseinon.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Gorseinon | £29 | £228 |
| Underpin A Building near Llanelli | £29 | £231 |
| Underpin A Building near Swansea | £29 | £229 |
| Underpin A Building near Neath | £30 | £225 |
| Underpin A Building near Port Talbot | £31 | £227 |
| Underpin A Building near Neath Port Talbot | £31 | £224 |
| Underpin A Building near Carmarthen | £26 | £205 |
| Underpin A Building near Carmarthenshire | £26 | £205 |
| Underpin A Building near Maesteg | £38 | £283 |
| Underpin A Building near Pyle | £34 | £262 |
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 - £17,338

Two storey extension - £87,756

Build a timber frame extension - £25,838

Build a swimming pool - £80,838

Single storey extension - £51,752

Side return extension - £39,673

Install an RSJ - £2,038

Outbuilding - £9,838

Build a Mansard loft conversion - £51,838

Loft conversion - £32,228

Build a kitchen extension - £41,838

Hip to gable loft conversion - £41,838

Granny annexe - £86,838

Garden office - £9,838

Convert a Garage - £15,838

Garage - £18,338

Build a flat roof extension - £21,838

Build a dormer loft conversion - £41,838

Concrete foundations - £6,088

Convert a bungalow loft - £28,838

Convert a basement - £35,673