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The Original Roofing Company
The Original Roofing Company are here to help customers who need an Extension Builder in Coulsdon. We offer a competitive rate to complete all your...
"Single storey extension" - COULSDON, job posted 17/07/26
Neats General Builders
Relax... you have found a reliable extension builder in Coulsdon. Neats General Builders is a friendly and reliable company based in Coulsdon who c...
"RSJ installation also I will need help with the cost of theses below IRS extension either the following measurements. L-3m w-3.5m H-Item Site Preparation Groundworks & Foundations Floor Construction Superstructure Roof Construction Windows and External Doors Internal Works Electrical ..." - CR3, job posted 08/11/25
First Trade Force
Vaughan Pain
First Trade Force are here to help customers who need an Extension Builder in Coulsdon. We offer a competitive rate to complete all your extension ...
"Side return extension" - COULSDON, job posted 04/10/25
EKJ Construction
EKJ Construction are here to help customers who need an Extension Builder in Coulsdon. We offer a competitive rate to complete all your extension b...
"Side return extension" - COULSDON, job posted 17/05/25
P4 Services Ltd
P4 Services a building company in Banstead, Surrey pride itself on having high standards. If you are looking for a building company for a new kitch...
"Side return extension" - COULSDON, job posted 19/04/25
O G Electricals
Coulsdon Croydon, CR5
Experienced extension builder ready to quote for your work. O G Electricals is the best extension builder in Coulsdon. No obligation free quotes an...
£31/hr
£308/day
C D Construction
Clive D'Laselle
C D Construction are here to help customers who need an Extension Builder in Coulsdon. We offer a competitive rate to complete all your extension b...
£39/hr
£247/day
R D Builders
Robert Dixon
R D Builders is an established extension buildering business in Coulsdon. We come highly recommended and provide competitive quotes for your work.<...
£44/hr
£330/day
G&R CONSTRUCTION LTD
Richard Rhodes
Trusted and professional extension builder in Coulsdon. Experienced in all extension buildering work and keeping within budget and on quote. G&R CO...
£46/hr
£290/day
G F Hobbs t/a G & N Builders
Coulsdon, CR5
G F Hobbs t/a G & N Builders is an established and experienced local extension builder in Coulsdon. Please contact us for a free, no obligation quo...
£40/hr
£251/day
TW BUILDING SERVICES
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£45/hr
£289/day
Ideal Burners Ltd
Surrey, CR5
Trusted and professional extension builder in Coulsdon. Experienced in all extension buildering work and keeping within budget and on quote. Ideal ...
£45/hr
£288/day
S B Enterprises
S B Enterprises is a trusted extension builder serving customers in Coulsdon and the surrounding area. Contact us to today to get a competitive quo...
£30/hr
£303/day
Cynosure Construction Ltd
Coulsdon, CR5
Relax... you have found a reliable extension builder in Coulsdon. Cynosure Construction Ltd is a friendly and reliable company based in Coulsdon wh...
£42/hr
£266/day
BCW BUILDERS
Need to find an Extension Builder near you for all your extension buildering work?
BCW BUILDERS provides a local, trusted extension builder...
£41/hr
£255/day
Duo Builders
Surrey, CR5
Need to find an Extension Builder near you for all your extension buildering work?
Duo Builders provides a local, trusted extension builder...
£39/hr
£245/day
Duo Builders
Duo Builders, offers customers a high end service for all domestic building works. Our highly qualified team undertake Design, Build and Maintenan...
£49/hr
£304/day
BnC Landscaping Team Ltd
Coulsdon, CR5
BnC are a family-run business with an outstanding reputation throughout our trade, we love our job and take pride in every aspect of our work. We s...
£45/hr
£287/day
AJ Building Group
Need an Extension Builder in Coulsdon? AJ Building Group has been helping local clients (10 mile radius) with their extension buildering jobs for m...
£44/hr
£277/day
247 Property Solutions London Ltd
Coulsdon, CR5
Our building services company 247 Property Solutions (London) Ltd have been helping customers throughout London, and the surrounding areas with pro...
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Local Extension Builders in London Boroughs
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 - £26,208
Garden office - £10,208
Granny annexe - £87,208
Build a flat roof extension - £22,208
Convert a Garage - £16,208
Hip to gable loft conversion - £42,208
Convert a bungalow loft - £29,208
Build a dormer loft conversion - £42,208
Build a swimming pool - £81,208
Build a Mansard loft conversion - £52,208
Concrete foundations - £6,458
Underpin a building - £17,708
Two storey extension - £88,312
Convert a basement - £39,840
Side return extension - £43,840
Loft conversion - £35,700
Garage - £18,708
Single storey extension - £59,160
Outbuilding - £10,208
Install an RSJ - £2,408
Build a kitchen extension - £42,208
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