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From £86,432
Trusted and professional extension builder in Pembrokeshire. Experienced in all extension buildering work and keeping within budget and on quote. L...
From £86,184
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,216
Experienced extension builder ready to quote for your work. Gainzy Builders is the best extension builder in Pembrokeshire. No obligation free quot...

Building a granny annexe ranges from £86,184 (Cleaning Services - We Can Do It based in SA73) to £86,432 (Lawtons Property Services based in SA73), 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 Pembrokeshire by posting a job with HaMuch. We will send it to extension builders in Pembrokeshire who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Pembrokeshire | £19 | £163 |
| Granny Annexe near Milford Haven | £18 | £159 |
| Granny Annexe near Carmarthenshire | £26 | £205 |
| Granny Annexe near Carmarthen | £26 | £205 |
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 - £16,764

Two storey extension - £86,896

Build a timber frame extension - £25,264

Build a swimming pool - £80,264

Single storey extension - £40,280

Side return extension - £33,220

Install an RSJ - £1,464

Outbuilding - £9,264

Build a Mansard loft conversion - £51,264

Loft conversion - £26,850

Build a kitchen extension - £41,264

Hip to gable loft conversion - £41,264

Granny annexe - £86,264

Garden office - £9,264

Convert a Garage - £15,264

Garage - £17,764

Build a flat roof extension - £21,264

Build a dormer loft conversion - £41,264

Concrete foundations - £5,514

Convert a bungalow loft - £28,264

Convert a basement - £29,220