From £86,832
Bryn, SA13
Need an Extension Builder in Bryn? K.D.L Property Maintenance has been helping local clients (20 mile radius) with their extension buildering jobs ...
From £86,848
Bryn, SA13
SS BUILDER are here to help customers who need an Extension Builder in Bryn. We offer a competitive rate to complete all your extension buildering ...
From £86,952
Trusted and professional extension builder in Bryn. Experienced in all extension buildering work and keeping within budget and on quote. Complete B...
From £86,576
Relax... you have found a reliable extension builder in Bryn. Cwtch Property Developments is a friendly and reliable company based in Bryn who cons...
From £86,976
Trusted and professional extension builder in Bryn. Experienced in all extension buildering work and keeping within budget and on quote. HALL & HAR...
From £86,720
Bryn, SA13
G Wager Building Maintenance is a trusted extension builder serving customers in Bryn and the surrounding area. Contact us to today to get a compet...
From £86,760
Marin Hughes General Builders is a trusted extension builder serving customers in Bryn and the surrounding area. Contact us to today to get a compe...
From £86,936
A Room at the Top are here to help customers who need an Extension Builder in Bryn. We offer a competitive rate to complete all your extension buil...
From £89,080
Silicone Render System Ltd is a plastering company based in Porthcawl, with over 20 years’ experience in the plastering trade. W...
From £86,632
Karina Lane Construction Ltd are here to help customers who need an Extension Builder in Bryn. We offer a competitive rate to complete all your ext...

Building a granny annexe ranges from £86,576 (Cwtch Property Developments based in CF34) to £89,080 (Silicone Rendering Systems Ltd based in CF36), 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 Bryn by posting a job with HaMuch. We will send it to extension builders in Bryn who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Port Talbot | £31 | £227 |
| Granny Annexe near Maesteg | £38 | £283 |
| Granny Annexe near Neath | £30 | £225 |
| Granny Annexe near Pyle | £34 | £262 |
| Granny Annexe near Neath Port Talbot | £31 | £224 |
| Granny Annexe near Porthcawl | £33 | £252 |
| Granny Annexe near Bridgend | £32 | £200 |
| Granny Annexe near Swansea | £29 | £230 |
| Granny Annexe near Rhondda | £31 | £206 |
| Granny Annexe near Rhondda, Cynon, Taff | £31 | £209 |
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 - £17,531

Two storey extension - £88,047

Build a timber frame extension - £26,031

Build a swimming pool - £81,031

Single storey extension - £55,624

Side return extension - £41,851

Install an RSJ - £2,231

Outbuilding - £10,031

Build a Mansard loft conversion - £52,031

Loft conversion - £34,043

Build a kitchen extension - £42,031

Hip to gable loft conversion - £42,031

Granny annexe - £87,031

Garden office - £10,031

Convert a Garage - £16,031

Garage - £18,531

Build a flat roof extension - £22,031

Build a dormer loft conversion - £42,031

Concrete foundations - £6,281

Convert a bungalow loft - £29,031

Convert a basement - £37,851