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Bristol Building Co.Ltd
Bristol Building Co.Ltd is an established and experienced local extension builder in BS15. Please contact us for a free, no obligation quote and co...
"Single storey extension" - BRISTOL, job posted 06/08/26
J GREEN PLASTERING LTD
J GREEN PLASTERING LTD are here to help customers who need an Extension Builder in BS15. We offer a competitive rate to complete all your extension...
"Single storey extension" - BS4, job posted 17/05/26
MSH Construction (Bristol) Ltd
Simon Hill
Relax... you have found a reliable extension builder in BS15. MSH Construction (Bristol) Ltd is a friendly and reliable company based in BS15 who c...
"Fully extension 4meter" - BS16, job posted 21/04/26
24 7 BUILDING SOLUTIONS LTD
Sarah Godwin
24 7 BUILDING SOLUTIONS LTD is a trusted extension builder serving customers in BS15 and the surrounding area. Contact us to today to get a competi...
"Gallow brackets or rsj beam fitted into a loft to support a chimney breast which is currently supported by timber" - BS15, job posted 25/03/26
Symmetry Design And Build
Symmetry Design And Build is a trusted extension builder serving customers in BS15 and the surrounding area. Contact us to today to get a competiti...
"RSJ installation" - BS14, job posted 25/03/26
SMJ Construction
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Garage conversion" - BS6, job posted 05/03/26
GARY G BOND LIMITED
Gary
GARY G BOND LIMITED are here to help customers who need an Extension Builder in BS15. We offer a competitive rate to complete all your extension bu...
"Loft conversion" - BRISTOL, job posted 23/12/25
HYATT BUILDING SERVICES
HYATT BUILDING SERVICES are here to help customers who need an Extension Builder in BS15. We offer a competitive rate to complete all your extensio...
"Side return extension" - BRISTOL, job posted 07/08/25
Concept Solutions Bristol Ltd
Concept Solutions Bristol Ltd is an established and experienced local extension builder in BS15. Please contact us for a free, no obligation quote ...
"Build a kitchen extension" - BS7, job posted 02/07/25
ST GEORGES HOMES (UK) LTD
Martin Malby
Need to find an Extension Builder near you for all your extension buildering work?
ST GEORGES HOMES (UK) LTD provides a local, trusted exte...
"Side return extension" - BRISTOL, job posted 02/07/25
S JOYCE BUILDING
S JOYCE BUILDING are here to help customers who need an Extension Builder in BS15. We offer a competitive rate to complete all your extension build...
"Side return pitch roof extension with structural knock through and bifolds across back of house" - BRISTOL, job posted 02/06/25
Sps construction
Samet Mata
Hello, we are small company that we can do all building jobs like roofing, loft conversion,Garage conversion, extension, house renovation, slabs an...
"Need an extension builder" - BRISTOL, job posted 28/05/25
Clever construction
Craig Broderick
Established in 2004 , our small but friendly team have worked on numerous projects across the city and surrounding area.
"Loft conversion" - GLOUCESTER, job posted 01/05/25
ASHWIN CONSTRUCTION
Relax... you have found a reliable extension builder in BS15. ASHWIN CONSTRUCTION is a friendly and reliable company based in BS15 who consider no ...
"Extend a building outside attached to home. Make an extra bedroom" - BS10, job posted 23/04/25
Built Square Construction
Trusted and professional extension builder in BS15. Experienced in all extension buildering work and keeping within budget and on quote. Built Squa...
"Dormer loft conversion" - BS5, job posted 11/04/25
Hourglass Design & Build
Hourglass Design & Build is an established extension buildering business in BS15. We come highly recommended and provide competitive quotes for you...
"Loft conversion dormer" - BS5, job posted 10/04/25
£38/hr
£290/day
Dovetail Ltd
Dovetail Ltd is a trusted extension builder serving customers in BS15 and the surrounding area. Contact us to today to get a competitive quote for ...
"Loft conversion" - BRISTOL, job posted 10/04/25
£31/hr
£234/day
PWT Builders Ltd
Trusted Builders for peace of mind - We are here to help you with all your building needs PWT BUILDERS LTD is a Bristol based company work...
"Velux or small Dormer Window Loft conversion of a terraced house" - BRISTOL, job posted 03/04/25
£32/hr
£245/day
M K J Construction Ltd
M K J Construction Ltd are here to help customers who need an Extension Builder in BS15. We offer a competitive rate to complete all your extension...
"Loft conversion" - BRISTOL, job posted 03/04/25
£31/hr
£238/day
HOLBROOK CONSTRUCTION
HOLBROOK CONSTRUCTION are here to help customers who need an Extension Builder in BS15. We offer a competitive rate to complete all your extension ...
"Side extension, 18sqm, 3.1mx5.75m, ground condition part paving part grass, 2 power point, no water, 2 top hung operable windows, 1 doors and the rest fixed glazing, solid roof2 roof lights standard size. Interior plasterboard paint skimmed and laminated timber floor. No heating but 8 spot lights...." - BRISTOL, job posted 20/03/25
Compare BS15 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Kingswood | £34 | £257 |
| Extension Builders near Bristol | £33 | £255 |
| Extension Builders near Keynsham | £33 | £251 |
| Extension Builders near South Gloucestershire | £34 | £260 |
| Extension Builders near Clifton | £33 | £255 |
| Extension Builders near Bradley Stoke | £34 | £259 |
| Extension Builders near Yate | £34 | £263 |
| Extension Builders near Bath | £32 | £249 |
| Extension Builders near Portishead | £33 | £247 |
| Extension Builders near North Somerset | £32 | £245 |
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 - £26,048

Garden office - £10,048

Granny annexe - £87,048

Build a flat roof extension - £22,048

Convert a Garage - £16,048

Hip to gable loft conversion - £42,048

Convert a bungalow loft - £29,048

Build a dormer loft conversion - £42,048

Build a swimming pool - £81,048

Build a Mansard loft conversion - £52,048

Concrete foundations - £6,298

Underpin a building - £17,548

Two storey extension - £88,072

Convert a basement - £38,040

Side return extension - £42,040

Loft conversion - £34,200

Garage - £18,548

Single storey extension - £55,960

Outbuilding - £10,048

Install an RSJ - £2,248

Build a kitchen extension - £42,048
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