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Ystradgynlais, SA9
Evans Home Improvements are here to help customers who need an Extension Builder in Ystradgynlais. We offer a competitive rate to complete all your...
Experienced extension builder ready to quote for your work. D J Howells is the best extension builder in Ystradgynlais. No obligation free quotes a...
Experienced extension builder ready to quote for your work. CR BUILDING & MAINTENANCE SERV is the best extension builder in Ystradgynlais. No oblig...
From £86,816
Ystradgynlais, SA9
Dale Hopkins is an established and experienced local extension builder in Ystradgynlais. Please contact us for a free, no obligation quote and comp...
From £86,968
S H PHILLIPS BUILDING CONTRACT are here to help customers who need an Extension Builder in Ystradgynlais. We offer a competitive rate to complete a...

Building a granny annexe ranges from £86,816 (Dale Hopkins based in SA9) to £87,008 (D J Howells based in SA18), 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 Ystradgynlais by posting a job with HaMuch. We will send it to extension builders in Ystradgynlais who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Neath Port Talbot | £31 | £224 |
| Granny Annexe near Neath | £30 | £227 |
| Granny Annexe near Maesteg | £38 | £283 |
| Granny Annexe near Port Talbot | £31 | £227 |
| Granny Annexe near Swansea | £29 | £230 |
| Granny Annexe near Aberdare | £32 | £212 |
| Granny Annexe near Gorseinon | £29 | £229 |
| Granny Annexe near Merthyr Tydfil | £33 | £220 |
| Granny Annexe near Rhondda, Cynon, Taff | £31 | £209 |
| Granny Annexe 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 - £17,388

Two storey extension - £87,832

Build a timber frame extension - £25,888

Build a swimming pool - £80,888

Single storey extension - £52,760

Side return extension - £40,240

Install an RSJ - £2,088

Outbuilding - £9,888

Build a Mansard loft conversion - £51,888

Loft conversion - £32,700

Build a kitchen extension - £41,888

Hip to gable loft conversion - £41,888

Granny annexe - £86,888

Garden office - £9,888

Convert a Garage - £15,888

Garage - £18,388

Build a flat roof extension - £21,888

Build a dormer loft conversion - £41,888

Concrete foundations - £6,138

Convert a bungalow loft - £28,888

Convert a basement - £36,240