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The Philog Paving Services
The Philog Paving Services is an established extension buildering business in CF11. We come highly recommended and provide competitive quotes for y...
"Build a kitchen extension" - CARDIFF, job posted 06/10/26
Chapman Builders
Experienced extension builder ready to quote for your work. Chapman Builders is the best extension builder in CF11. No obligation free quotes and m...
"Side return extension" - CF24, job posted 21/08/26
JA Building Maintenance
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in CF11. No obligation free quote...
"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
TOR BUILD
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...
"Loft conversion" - CF23, job posted 16/05/26
Penarth Loft Conversions Ltd
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
"Loft conversion" - CARDIFF, job posted 01/11/25
MARWAY BUILDING LTD
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...
"Kitchen extension" - CARDIFF, job posted 31/10/25
Elite Building Contractors South Wales
Trusted and professional extension builder in CF11. Experienced in all extension buildering work and keeping within budget and on quote. Elite Buil...
"Side return extension" - CF24, job posted 21/09/25
PK CONSTRUCTION
Paul Knox
Trusted and professional extension builder in CF11. Experienced in all extension buildering work and keeping within budget and on quote. PK CONSTRU...
"Porch with toilet and shower to be built onto front of house" - CF14, job posted 24/06/25
MCp Home Improvements
MCp Home Improvements is an established and experienced local extension builder in CF11. Please contact us for a free, no obligation quote and comp...
"Build a garden office, Build a dormer loft conversion" - CF23, job posted 03/06/25
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...
"RSJ installation to open up kitchen and utility room. About 2m wide." - CARDIFF, job posted 22/04/25
MGKB Ltd
Relax... you have found a reliable extension builder in CF11. MGKB Ltd is a friendly and reliable company based in CF11 who consider no job as too ...
"RSJ installation" - CARDIFF, job posted 22/04/25
RDL BUILDING SERVICES LTD
Robert Lewis
RDL BUILDING SERVICES LTD is a trusted extension builder serving customers in CF11 and the surrounding area. Contact us to today to get a competiti...
"Single storey extension" - CF24, job posted 09/04/25
£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...
"Looking for a single storey side return to extend kitchen / living space." - CF23, job posted 25/03/25
£29/hr
£195/day
Fusion Fitted Furniture
Need an Extension Builder in CF11? Fusion Fitted Furniture has been helping local clients (20 mile radius) with their extension buildering jobs for...
"Side return extension" - CF24, job posted 25/03/25
£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
£34/hr
£226/day
CJ BUILDING SERVICES
CJ BUILDING SERVICES are here to help customers who need an Extension Builder in CF11. We offer a competitive rate to complete all your extension b...
"Double height side extension with single story rear to my existing semi-detached in Cardiff. Planning permission received." - CF14, job posted 11/03/25
£29/hr
£197/day
CAMWOOD BUILDING SERVICES
CAMWOOD BUILDING SERVICES is an established extension buildering business in CF11. We come highly recommended and provide competitive quotes for yo...
"Double height side extension and single story rear" - CF14, job posted 11/03/25
£32/hr
£212/day
Studio369
Experienced extension builder ready to quote for your work. Studio369 is the best extension builder in CF11. No obligation free quotes and many hap...
"Side return extension" - CF24, job posted 11/01/25
£38/hr
£254/day
Heath Windows & Doors Ltd
Need to find an Extension Builder near you for all your extension buildering work?
Heath Windows & Doors Ltd provides a local, trusted exte...
"Loft conversion with en suite" - CARDIFF, job posted 29/12/24
£31/hr
£206/day
Charles James Developments
Experienced extension builder ready to quote for your work. Charles James Developments is the best extension builder in CF11. No obligation free qu...
"Loft conversion" - CARDIFF, job posted 20/11/24
Compare CF11 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Cardiff | £34 | £223 |
| Extension Builders near Penarth | £35 | £223 |
| Extension Builders near Barry | £33 | £218 |
| Extension Builders near Caerphilly | £33 | £208 |
| Extension Builders near Church Village | £34 | £214 |
| Extension Builders near Risca | £32 | £218 |
| Extension Builders near Pontypridd | £33 | £211 |
| Extension Builders near Newport | £41 | £233 |
| Extension Builders near Vale of Glamorgan | £29 | £217 |
| Extension Builders near Weston-super-Mare | £33 | £253 |
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 - £25,664
Garden office - £9,664
Granny annexe - £86,664
Build a flat roof extension - £21,664
Convert a Garage - £15,664
Hip to gable loft conversion - £41,664
Convert a bungalow loft - £28,664
Build a dormer loft conversion - £41,664
Build a swimming pool - £80,664
Build a Mansard loft conversion - £51,664
Concrete foundations - £5,914
Underpin a building - £17,164
Two storey extension - £87,496
Convert a basement - £33,720
Side return extension - £37,720
Loft conversion - £30,600
Garage - £18,164
Single storey extension - £48,280
Outbuilding - £9,664
Install an RSJ - £1,864
Build a kitchen extension - £41,664
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