From £86,848
SS BUILDER are here to help customers who need an Extension Builder in Port Talbot. We offer a competitive rate to complete all your extension buil...
From £86,832
Need an Extension Builder in Port Talbot? K.D.L Property Maintenance has been helping local clients (20 mile radius) with their extension builderin...
From £86,976
Trusted and professional extension builder in Port Talbot. Experienced in all extension buildering work and keeping within budget and on quote. HAL...
From £86,952
Trusted and professional extension builder in Port Talbot. Experienced in all extension buildering work and keeping within budget and on quote. Com...
From £86,760
Marin Hughes General Builders is a trusted extension builder serving customers in Port Talbot and the surrounding area. Contact us to today to get ...
From £86,576
Relax... you have found a reliable extension builder in Port Talbot. Cwtch Property Developments is a friendly and reliable company based in Port T...
From £86,936
A Room at the Top are here to help customers who need an Extension Builder in Port Talbot. We offer a competitive rate to complete all your extensi...
From £86,632
Karina Lane Construction Ltd are here to help customers who need an Extension Builder in Port Talbot. We offer a competitive rate to complete all y...
From £87,000
R.H Damp Proofing are here to help customers who need an Extension Builder in Port Talbot. We offer a competitive rate to complete all your extensi...
From £86,896
Fit kitchens and more ltd is an established and experienced local extension builder in Port Talbot. Please contact us for a free, no obligation quo...

Building a granny annexe ranges from £86,576 (Cwtch Property Developments based in CF34) to £87,000 (R.H Damp Proofing based in SA1), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in Port Talbot by posting a job with HaMuch. We will send it to extension builders in Port Talbot who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Port Talbot | £31 | £227 |
| Granny Annexe near Neath | £30 | £225 |
| Granny Annexe near Maesteg | £38 | £283 |
| Granny Annexe near Pyle | £34 | £262 |
| Granny Annexe near Neath Port Talbot | £31 | £224 |
| Granny Annexe near Swansea | £29 | £230 |
| Granny Annexe near Porthcawl | £33 | £252 |
| Granny Annexe near Bridgend | £32 | £200 |
| Granny Annexe near Gorseinon | £29 | £228 |
| Granny Annexe near Rhondda | £31 | £206 |
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 - £17,341

Two storey extension - £87,761

Build a timber frame extension - £25,841

Build a swimming pool - £80,841

Single storey extension - £51,816

Side return extension - £39,709

Install an RSJ - £2,041

Outbuilding - £9,841

Build a Mansard loft conversion - £51,841

Loft conversion - £32,258

Build a kitchen extension - £41,841

Hip to gable loft conversion - £41,841

Granny annexe - £86,841

Garden office - £9,841

Convert a Garage - £15,841

Garage - £18,341

Build a flat roof extension - £21,841

Build a dormer loft conversion - £41,841

Concrete foundations - £6,091

Convert a bungalow loft - £28,841

Convert a basement - £35,709