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Select your affordable CF11 extension builder
The Philog Paving Services is an established extension buildering business in CF11. We come highly recommended and provide competitive quotes for y...
Experienced extension builder ready to quote for your work. Chapman Builders is the best extension builder in CF11. No obligation free quotes and m...
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in CF11. No obligation free quote...
Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in CF11. No obligation free quotes and many hap...
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 CF11 and the surrounding area. Contact us to today to get a competitive quo...
Trusted and professional extension builder in CF11. Experienced in all extension buildering work and keeping within budget and on quote. Elite Buil...
Paul Knox
Trusted and professional extension builder in CF11. 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 CF11. 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...

Comparing extension builders estimates for Loft conversion gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost of a loft conversion in CF11 by posting your job to extension builders in CF11.
"We are looking at obtaining a quote for a loft conversion" - CARDIFF, job posted 13/09/23
"Loft conversion with en suite" - CARDIFF, job posted 29/12/24
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Loft Conversion near Cardiff | £34 | £223 |
| Loft Conversion near Penarth | £35 | £223 |
| Loft Conversion near Barry | £33 | £218 |
| Loft Conversion near Caerphilly | £33 | £208 |
| Loft Conversion near Church Village | £34 | £214 |
| Loft Conversion near Risca | £32 | £218 |
| Loft Conversion near Pontypridd | £33 | £211 |
| Loft Conversion near Newport | £41 | £233 |
| Loft Conversion near Vale of Glamorgan | £29 | £217 |
| Loft Conversion near Weston-super-Mare | £33 | £253 |
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 - £17,102

Two storey extension - £87,404

Build a timber frame extension - £25,602

Build a swimming pool - £80,602

Single storey extension - £47,048

Side return extension - £37,027

Install an RSJ - £1,802

Outbuilding - £9,602

Build a Mansard loft conversion - £51,602

Loft conversion - £30,023

Build a kitchen extension - £41,602

Hip to gable loft conversion - £41,602

Granny annexe - £86,602

Garden office - £9,602

Convert a Garage - £15,602

Garage - £18,102

Build a flat roof extension - £21,602

Build a dormer loft conversion - £41,602

Concrete foundations - £5,852

Convert a bungalow loft - £28,602

Convert a basement - £33,027