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Select your affordable Butetown extension builder
The Philog Paving Services is an established extension buildering business in Butetown. We come highly recommended and provide competitive quotes f...
Experienced extension builder ready to quote for your work. Chapman Builders is the best extension builder in Butetown. No obligation free quotes a...
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in Butetown. No obligation free q...
Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in Butetown. No obligation free quotes and many...
Relax... you have found a reliable extension builder in Butetown. Charles Marshall Contracting Ltd is a friendly and reliable company based in Bute...
Bill Coslett
35 years in the trade and there is not much we haven't come across or done from pools to extensions and we specialise in loft conversions
MARWAY BUILDING LTD is a trusted extension builder serving customers in Butetown and the surrounding area. Contact us to today to get a competitive...
Trusted and professional extension builder in Butetown. Experienced in all extension buildering work and keeping within budget and on quote. Elite ...
Paul Knox
Trusted and professional extension builder in Butetown. Experienced in all extension buildering work and keeping within budget and on quote. PK CON...
MCp Home Improvements is an established and experienced local extension builder in Butetown. Please contact us for a free, no obligation quote and ...

Building a granny annexe ranges from £86,040 (PK CONSTRUCTION based in CF14) to £86,808 (Chapman Builders based in CF5), 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 Butetown by posting a job with HaMuch. We will send it to extension builders in Butetown who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Cardiff | £34 | £223 |
| Granny Annexe near Penarth | £35 | £223 |
| Granny Annexe near Barry | £33 | £218 |
| Granny Annexe near Caerphilly | £33 | £208 |
| Granny Annexe near Church Village | £34 | £214 |
| Granny Annexe near Risca | £32 | £218 |
| Granny Annexe near Newport | £41 | £233 |
| Granny Annexe near Pontypridd | £33 | £211 |
| Granny Annexe near Weston-super-Mare | £33 | £253 |
| Granny Annexe near Cwmbran | £43 | £219 |
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 - £17,076

Two storey extension - £87,364

Build a timber frame extension - £25,576

Build a swimming pool - £80,576

Single storey extension - £46,520

Side return extension - £36,730

Install an RSJ - £1,776

Outbuilding - £9,576

Build a Mansard loft conversion - £51,576

Loft conversion - £29,775

Build a kitchen extension - £41,576

Hip to gable loft conversion - £41,576

Granny annexe - £86,576

Garden office - £9,576

Convert a Garage - £15,576

Garage - £18,076

Build a flat roof extension - £21,576

Build a dormer loft conversion - £41,576

Concrete foundations - £5,826

Convert a bungalow loft - £28,576

Convert a basement - £32,730