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The Philog Paving Services
The Philog Paving Services is an established extension buildering business in Llanishen. We come highly recommended and provide competitive quotes ...
"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 Llanishen. No obligation free quotes ...
"Side return extension" - CF24, job posted 21/08/26
A.Gaddarn Builders
Alan Gaddarn
Very reliable honest and hard working guarantee all work clean and tidy first class work
"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
JA Building Maintenance
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in Llanishen. No obligation free ...
"Loft conversion" - CF23, job posted 16/05/26
TOR BUILD
Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in Llanishen. No obligation free quotes and man...
"Timber frame extension" - CF3, job posted 11/02/26
Charles Marshall Contracting Ltd
Relax... you have found a reliable extension builder in Llanishen. Charles Marshall Contracting Ltd is a friendly and reliable company based in Lla...
"Loft conversion" - CARDIFF, job posted 01/11/25
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
"Kitchen extension" - CARDIFF, job posted 31/10/25
MARWAY BUILDING LTD
MARWAY BUILDING LTD is a trusted extension builder serving customers in Llanishen and the surrounding area. Contact us to today to get a competitiv...
"Side return extension" - CF24, job posted 21/09/25
Elite Building Contractors South Wales
Trusted and professional extension builder in Llanishen. Experienced in all extension buildering work and keeping within budget and on quote. Elite...
"Porch with toilet and shower to be built onto front of house" - CF14, job posted 24/06/25
PK CONSTRUCTION
Paul Knox
Trusted and professional extension builder in Llanishen. Experienced in all extension buildering work and keeping within budget and on quote. PK CO...
"Build a garden office, Build a dormer loft conversion" - CF23, job posted 03/06/25
MCp Home Improvements
MCp Home Improvements is an established and experienced local extension builder in Llanishen. Please contact us for a free, no obligation quote and...
"RSJ installation to open up kitchen and utility room. About 2m wide." - CARDIFF, job posted 22/04/25
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" - CARDIFF, job posted 22/04/25
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...
"Single storey extension" - CF24, job posted 09/04/25
MGKB Ltd
Llanishen, CF23
Relax... you have found a reliable extension builder in Llanishen. MGKB Ltd is a friendly and reliable company based in Llanishen who consider no j...
"Looking for a single storey side return to extend kitchen / living space." - CF23, job posted 25/03/25
TLC Building Services
Llanishen, CF23
Trusted and professional extension builder in Llanishen. Experienced in all extension buildering work and keeping within budget and on quote. TLC B...
"Side return extension" - CF24, job posted 25/03/25
Cross Group Building Works Ltd
General Building and Property Renovation Specialists A family business since Based in South Wales We specialise in all aspects of residential build...
"Looking for a single storey side return to extend kitchen / living space." - CF23, job posted 25/03/25
N OBRIEN BUILDING SERVICES
Experienced extension builder ready to quote for your work. N OBRIEN BUILDING SERVICES is the best extension builder in Llanishen. No obligation fr...
"Double height side extension with single story rear to my existing semi-detached in Cardiff. Planning permission received." - CF14, job posted 11/03/25
RDL BUILDING SERVICES LTD
Robert Lewis
RDL BUILDING SERVICES LTD is a trusted extension builder serving customers in Llanishen and the surrounding area. Contact us to today to get a comp...
"Double height side extension and single story rear" - CF14, job posted 11/03/25
GML Builders
Need to find an Extension Builder near you for all your extension buildering work?
GML Builders provides a local, trusted extension builder...
"Side return extension" - CF24, job posted 11/01/25
£37/hr
£241/day
GOODE BUILDING SERVICES
Paul Goode
Need to find an Extension Builder near you for all your extension buildering work?
GOODE BUILDING SERVICES provides a local, trusted extens...
"Loft conversion with en suite" - CARDIFF, job posted 29/12/24
Compare Llanishen 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 - £25,696
Garden office - £9,696
Granny annexe - £86,696
Build a flat roof extension - £21,696
Convert a Garage - £15,696
Hip to gable loft conversion - £41,696
Convert a bungalow loft - £28,696
Build a dormer loft conversion - £41,696
Build a swimming pool - £80,696
Build a Mansard loft conversion - £51,696
Concrete foundations - £5,946
Underpin a building - £17,196
Two storey extension - £87,544
Convert a basement - £34,080
Side return extension - £38,080
Loft conversion - £30,900
Garage - £18,196
Single storey extension - £48,920
Outbuilding - £9,696
Install an RSJ - £1,896
Build a kitchen extension - £41,696
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