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Select your affordable CF23 extension builder
The Philog Paving Services is an established extension buildering business in CF23. We come highly recommended and provide competitive quotes for y...
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in CF23. No obligation free quote...
Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in CF23. No obligation free quotes and many hap...
Relax... you have found a reliable extension builder in CF23. Charles Marshall Contracting Ltd is a friendly and reliable company based in CF23 who...
Paul Knox
Trusted and professional extension builder in CF23. Experienced in all extension buildering work and keeping within budget and on quote. PK CONSTRU...
MCp Home Improvements is an established and experienced local extension builder in CF23. Please contact us for a free, no obligation quote and comp...
River Gods is a respected name in bathroom and kitchen design throughout South Wales. Known for quality, artisan-ship and exceptional value for mon...
Need to find an Extension Builder near you for all your extension buildering work?
ABS Allied Trades provides a local, trusted extension bu...
Relax... you have found a reliable extension builder in CF23. MGKB Ltd is a friendly and reliable company based in CF23 who consider no job as too ...
Trusted and professional extension builder in CF23. Experienced in all extension buildering work and keeping within budget and on quote. TLC Buildi...

Garden offices range from the cheapest of £9,040 (PK CONSTRUCTION based in CF14) to the dearest of £9,896 (River Gods Limited based in CF14), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in CF23 by posting a job with HaMuch. We'll send it to extension builders in CF23.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Cardiff | £34 | £223 |
| Garden Office near Caerphilly | £33 | £208 |
| Garden Office near Penarth | £35 | £223 |
| Garden Office near Risca | £32 | £218 |
| Garden Office near Church Village | £34 | £214 |
| Garden Office near Newport | £41 | £233 |
| Garden Office near Pontypridd | £33 | £211 |
| Garden Office near Barry | £33 | £218 |
| Garden Office near Cwmbran | £43 | £219 |
| Garden Office 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 - £17,161

Two storey extension - £87,491

Build a timber frame extension - £25,661

Build a swimming pool - £80,661

Single storey extension - £48,216

Side return extension - £37,684

Install an RSJ - £1,861

Outbuilding - £9,661

Build a Mansard loft conversion - £51,661

Loft conversion - £30,570

Build a kitchen extension - £41,661

Hip to gable loft conversion - £41,661

Granny annexe - £86,661

Garden office - £9,661

Convert a Garage - £15,661

Garage - £18,161

Build a flat roof extension - £21,661

Build a dormer loft conversion - £41,661

Concrete foundations - £5,911

Convert a bungalow loft - £28,661

Convert a basement - £33,684