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KD Construction
Need an Extension Builder in SA14? KD Construction has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
"New House extension" - SA4, job posted 26/01/25
NTW BUILDING
NTW BUILDING is an established and experienced local extension builder in SA14. Please contact us for a free, no obligation quote and competitive r...
Apex Building Services
Andy Power
Worked in building all my working life.
Worked as a builder 30 plus year's.
Am a hands on builder. Have built hou...
£28/hr
£218/day
L2 Construction Limited
L2 Construction Limited is an established and experienced local extension builder in SA14. Please contact us for a free, no obligation quote and co...
£28/hr
£232/day
RTC BUILDERS
RTC BUILDERS is a trusted extension builder serving customers in SA14 and the surrounding area. Contact us to today to get a competitive quote for ...
£30/hr
£231/day
Rowan Evans Building Contractors
Rowan Evans Building Contractors is an established extension buildering business in SA14. We come highly recommended and provide competitive quotes...
£25/hr
£200/day
HAYDN LEWIS BUILDING SVS LTD
Experienced extension builder ready to quote for your work. HAYDN LEWIS BUILDING SVS LTD is the best extension builder in SA14. No obligation free ...
£29/hr
£238/day
Asj Building Services
Relax... you have found a reliable extension builder in SA14. Asj Building Services is a friendly and reliable company based in SA14 who consider n...
£27/hr
£209/day
Custom Build Construction
Custom Build Construction are here to help customers who need an Extension Builder in SA14. We offer a competitive rate to complete all your extens...
Compare SA14 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Llanelli | £29 | £231 |
| Extension Builders near Gorseinon | £29 | £228 |
| Extension Builders near Swansea | £29 | £229 |
| Extension Builders near Carmarthen | £26 | £205 |
| Extension Builders near Carmarthenshire | £26 | £205 |
| Extension Builders near Neath | £30 | £225 |
| Extension Builders near Neath Port Talbot | £31 | £224 |
| Extension Builders near Port Talbot | £31 | £227 |
| Extension Builders near Maesteg | £38 | £283 |
| Extension Builders near Pyle | £34 | £262 |
Job estimates from extension builders near you
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.

Build a timber frame extension - £25,920

Garden office - £9,920

Granny annexe - £86,920

Build a flat roof extension - £21,920

Convert a Garage - £15,920

Hip to gable loft conversion - £41,920

Convert a bungalow loft - £28,920

Build a dormer loft conversion - £41,920

Build a swimming pool - £80,920

Build a Mansard loft conversion - £51,920

Concrete foundations - £6,170

Underpin a building - £17,420

Two storey extension - £87,880

Convert a basement - £36,600

Side return extension - £40,600

Loft conversion - £33,000

Garage - £18,420

Single storey extension - £53,400

Outbuilding - £9,920

Install an RSJ - £2,120

Build a kitchen extension - £41,920
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