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The Philog Paving Services
The Philog Paving Services is an established extension buildering business in CF23. We come highly recommended and provide competitive quotes for y...
"Build a kitchen extension" - CARDIFF, job posted 06/10/26
JA Building Maintenance
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in CF23. No obligation free quote...
"Side return extension" - CF24, job posted 21/08/26
TOR BUILD
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...
"Hello A kitchen extension is required. Full planning has been received and structural drawings/recommendations received. Would you be interested in providing a quote? Thank you Jackie" - CF14, job posted 05/06/26
Charles Marshall Contracting Ltd
Relax... you have found a reliable extension builder in CF23. Charles Marshall Contracting Ltd is a friendly and reliable company based in CF23 who...
"Loft conversion" - CF23, job posted 16/05/26
PK CONSTRUCTION
Paul Knox
Trusted and professional extension builder in CF23. Experienced in all extension buildering work and keeping within budget and on quote. PK CONSTRU...
"Timber frame extension" - CF3, job posted 11/02/26
MCp Home Improvements
MCp Home Improvements is an established and experienced local extension builder in CF23. Please contact us for a free, no obligation quote and comp...
"Loft conversion" - CARDIFF, job posted 01/11/25
River Gods Limited
River Gods is a respected name in bathroom and kitchen design throughout South Wales. Known for quality, artisan-ship and exceptional value for mon...
"Kitchen extension" - CARDIFF, job posted 31/10/25
ABS Allied Trades
Need to find an Extension Builder near you for all your extension buildering work?
ABS Allied Trades provides a local, trusted extension bu...
"Side return extension" - CF24, job posted 21/09/25
MGKB Ltd
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 ...
"Porch with toilet and shower to be built onto front of house" - CF14, job posted 24/06/25
TLC Building Services
Trusted and professional extension builder in CF23. Experienced in all extension buildering work and keeping within budget and on quote. TLC Buildi...
"Build a garden office, Build a dormer loft conversion" - CF23, job posted 03/06/25
N OBRIEN BUILDING SERVICES
Experienced extension builder ready to quote for your work. N OBRIEN BUILDING SERVICES is the best extension builder in CF23. No obligation free qu...
"RSJ installation to open up kitchen and utility room. About 2m wide." - CARDIFF, job posted 22/04/25
£30/hr
£203/day
K WALKER CONSTRUCTION
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"RSJ installation" - CARDIFF, job posted 22/04/25
£29/hr
£195/day
Fusion Fitted Furniture
Need an Extension Builder in CF23? Fusion Fitted Furniture has been helping local clients (20 mile radius) with their extension buildering jobs for...
"Single storey extension" - CF24, job posted 09/04/25
£32/hr
£215/day
Vencer Ltd
Vencer understand that when it comes to delivering client\nsatisfaction, the project or property involved will require\nbeing delivered on time, wi...
"Looking for a single storey side return to extend kitchen / living space." - CF23, job posted 25/03/25
£35/hr
£173/day
Griffin building contractors
Ray Griffin
I've been in the building trade for over thirty years. I do not advertise any where other than Facebook. I really totally on recomendations...
"Side return extension" - CF24, job posted 25/03/25
£35/hr
£237/day
RIMO CONSTRUCTION
Need to find an Extension Builder near you for all your extension buildering work?
RIMO CONSTRUCTION provides a local, trusted extension bu...
"Looking for a single storey side return to extend kitchen / living space." - CF23, job posted 25/03/25
£35/hr
£221/day
R. Hughes Designs
R. Hughes Designs is an established and experienced local extension builder in CF23. Please contact us for a free, no obligation quote and competit...
"Double height side extension with single story rear to my existing semi-detached in Cardiff. Planning permission received." - CF14, job posted 11/03/25
£32/hr
£198/day
Forty Builders Ltd
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Double height side extension and single story rear" - CF14, job posted 11/03/25
£30/hr
£187/day
TGH & Sons
Trusted and professional extension builder in CF23. Experienced in all extension buildering work and keeping within budget and on quote. TGH & Sons...
"Side return extension" - CF24, job posted 11/01/25
£31/hr
£204/day
TGF BUILDING & MAINTENCE
TGF BUILDING & MAINTENCE is an established and experienced local extension builder in CF23. Please contact us for a free, no obligation quote and c...
"Loft conversion with en suite" - CARDIFF, job posted 29/12/24
Compare CF23 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Cardiff | £34 | £223 |
| Extension Builders near Caerphilly | £33 | £208 |
| Extension Builders near Penarth | £35 | £223 |
| Extension Builders near Risca | £32 | £218 |
| Extension Builders near Church Village | £34 | £214 |
| Extension Builders near Newport | £41 | £233 |
| Extension Builders near Pontypridd | £33 | £211 |
| Extension Builders near Barry | £33 | £218 |
| Extension Builders near Cwmbran | £43 | £219 |
| Extension Builders near Rhondda | £31 | £206 |
Job estimates from extension builders near you
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.
Build a timber frame extension - £25,704
Garden office - £9,704
Granny annexe - £86,704
Build a flat roof extension - £21,704
Convert a Garage - £15,704
Hip to gable loft conversion - £41,704
Convert a bungalow loft - £28,704
Build a dormer loft conversion - £41,704
Build a swimming pool - £80,704
Build a Mansard loft conversion - £51,704
Concrete foundations - £5,954
Underpin a building - £17,204
Two storey extension - £87,556
Convert a basement - £34,170
Side return extension - £38,170
Loft conversion - £30,975
Garage - £18,204
Single storey extension - £49,080
Outbuilding - £9,704
Install an RSJ - £1,904
Build a kitchen extension - £41,704
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