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The Philog Paving Services
The Philog Paving Services is an established extension buildering business in Grangetown. 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 Grangetown. No obligation free quotes...
"Side return extension" - CF24, job posted 21/08/26
JA Building Maintenance
Grangetown, CF11
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in Grangetown. No obligation free...
"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 Grangetown. No obligation free quotes and ma...
"Loft conversion" - CF23, job posted 16/05/26
Charles Marshall Contracting Ltd
Relax... you have found a reliable extension builder in Grangetown. Charles Marshall Contracting Ltd is a friendly and reliable company based in Gr...
"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 Grangetown and the surrounding area. Contact us to today to get a competiti...
"Side return extension" - CF24, job posted 21/09/25
Elite Building Contractors South Wales
Trusted and professional extension builder in Grangetown. Experienced in all extension buildering work and keeping within budget and on quote. Elit...
"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 Grangetown. Experienced in all extension buildering work and keeping within budget and on quote. PK C...
"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 Grangetown. Please contact us for a free, no obligation quote an...
"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
Relax... you have found a reliable extension builder in Grangetown. MGKB Ltd is a friendly and reliable company based in Grangetown who consider no...
"Looking for a single storey side return to extend kitchen / living space." - CF23, job posted 25/03/25
TLC Building Services
Trusted and professional extension builder in Grangetown. Experienced in all extension buildering work and keeping within budget and on quote. TLC ...
"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 Grangetown. No obligation f...
"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 Grangetown and the surrounding area. Contact us to today to get a com...
"Double height side extension and single story rear" - CF14, job posted 11/03/25
DPC BUILDERS
Relax... you have found a reliable extension builder in Grangetown. DPC BUILDERS is a friendly and reliable company based in Grangetown who conside...
"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
£31/hr
£206/day
CEB Building
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion" - CARDIFF, job posted 20/11/24
Compare Grangetown 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 - £25,688
Garden office - £9,688
Granny annexe - £86,688
Build a flat roof extension - £21,688
Convert a Garage - £15,688
Hip to gable loft conversion - £41,688
Convert a bungalow loft - £28,688
Build a dormer loft conversion - £41,688
Build a swimming pool - £80,688
Build a Mansard loft conversion - £51,688
Concrete foundations - £5,938
Underpin a building - £17,188
Two storey extension - £87,532
Convert a basement - £33,990
Side return extension - £37,990
Loft conversion - £30,825
Garage - £18,188
Single storey extension - £48,760
Outbuilding - £9,688
Install an RSJ - £1,888
Build a kitchen extension - £41,688
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