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Greens Gardening & Landscape Property Maintenance
John Mcdonagh
Watch our short video highlighting all our expertise and services here:
more than 10 y...
"Build a dormer loft conversion" - BR3, job posted 19/09/26
Cre8tive Contractors Ltd
Cre8tive Contractors Ltd are here to help customers who need an Extension Builder in SE20. We offer a competitive rate to complete all your extensi...
"Kitchen extension" - BECKENHAM, job posted 25/08/25
RCB Group Design & Build
Vasi J
No Call out charges!
All Jobs Fully Insured and Guaranteed !!!
All aspects of Plumbing, Heating and Drains....
..."I am very pleased with the work carried out. All very clear and transparent." - ROMFORD,reviewed 10/01/18, KELLY
Glenn Miller Builders Limited
Glenn Miller
Relax... you have found a reliable extension builder in SE20. Glenn Miller Builders Limited is a friendly and reliable company based in SE20 who co...
"Build an outbuilding" - SOUTH NORWOOD, job posted 02/03/25
Aviemore Building Contractors Ltd
Experienced extension builder ready to quote for your work. Aviemore Building Contractors Ltd is the best extension builder in SE20. No obligation ...
"Loft conversion" - BR3, job posted 19/11/24
Oaksure Construction
Stuart Bogazzi
Working as a builder for over 20 years now.
Family run business
Can sort any problem out and help build your dreams.
"Side return extension" - SE26, job posted 04/08/24
Bhagtana & Co Construction
Experienced extension builder ready to quote for your work. Bhagtana & Co Construction is the best extension builder in SE20. No obligation free qu...
"Basement conversion" - BECKENHAM, job posted 19/02/24
K S BUILDERS (UK) LTD
Trusted and professional extension builder in SE20. Experienced in all extension buildering work and keeping within budget and on quote. K S BUILDE...
VDL Construction Ltd
Need to find an Extension Builder near you for all your extension buildering work?
VDL Construction Ltd provides a local, trusted extension...
A & P Master Construction
Experienced extension builder ready to quote for your work. A & P Master Construction is the best extension builder in SE20. No obligation free quo...
Tracos
Experienced extension builder ready to quote for your work. Tracos is the best extension builder in SE20. No obligation free quotes and many happy ...
Skim King
Experienced extension builder ready to quote for your work. Skim King is the best extension builder in SE20. No obligation free quotes and many hap...
Atkins Builders
Experienced extension builder ready to quote for your work. Atkins Builders is the best extension builder in SE20. No obligation free quotes and ma...
ASL Development
Need to find an Extension Builder near you for all your extension buildering work?
ASL Development provides a local, trusted extension buil...
Diy (London) Doctors Ltd
Diy (London) Doctors Ltd is an established extension buildering business in SE20. We come highly recommended and provide competitive quotes for you...
£38/hr
£241/day
SWS BUILDERS
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£44/hr
£281/day
Baseline Build and Renovate Ltd
Baseline Build and Renovate Ltd is an established extension buildering business in SE20. We come highly recommended and provide competitive quotes ...
£49/hr
£304/day
Universal Plastering Ltd
We are a family run local business that was founded in 2007. Universal Plastering Ltd provides a wide variety of building and plastering services i...
£40/hr
£253/day
Wisebirds Builders
Nathanael Grosvenor
Wisebirds Builders is an established extension buildering business in SE20. We come highly recommended and provide competitive quotes for your work...
£39/hr
£247/day
Scribe London Lofts Ltd
Trusted and professional extension builder in SE20. Experienced in all extension buildering work and keeping within budget and on quote. Scribe Lon...
Quickly find an Extension Builder in SE20
Use these steps to find Extension Builders in SE20 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in SE20. We’ll notify you via text or email when an Extension Builder is available to quote.
- Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local SE20 Extension Builders or phone them directly - you’re in control!
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 - £26,112
Garden office - £10,112
Granny annexe - £87,112
Build a flat roof extension - £22,112
Convert a Garage - £16,112
Hip to gable loft conversion - £42,112
Convert a bungalow loft - £29,112
Build a dormer loft conversion - £42,112
Build a swimming pool - £81,112
Build a Mansard loft conversion - £52,112
Concrete foundations - £6,362
Underpin a building - £17,612
Two storey extension - £88,168
Convert a basement - £38,760
Side return extension - £42,760
Loft conversion - £34,800
Garage - £18,612
Single storey extension - £57,240
Outbuilding - £10,112
Install an RSJ - £2,312
Build a kitchen extension - £42,112
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