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SJ Expert Building Services
SJ Expert Building Services are here to help customers who need an Extension Builder in Hornsey. We offer a competitive rate to complete all your e...
"Underpin a building" - N10, job posted 26/08/26
Five Star Builder
Experienced extension builder ready to quote for your work. Five Star Builder is the best extension builder in Hornsey. No obligation free quotes a...
"Small kitchen extension into garden." - N22, job posted 07/02/26
Bellator Construction Ltd
Dimitar Vakavliev
We are reliable tradesmen delivering quality works with attention to detail
"Need an extension builder" - N4, job posted 18/05/25
GG CONSTRUCTION LTD
GG CONSTRUCTION LTD is a trusted extension builder serving customers in Hornsey and the surrounding area. Contact us to today to get a competitive ...
"RSJ re-installation" - N16, job posted 10/04/25
Andreas Thomas Demetri
Andreas Thomas Demetri is a trusted extension builder serving customers in Hornsey and the surrounding area. Contact us to today to get a competiti...
"Having planning permission, having structure drawing, about 40 square metres basement extension, looking for builders, want to be done ASAP." - N7, job posted 15/12/23
Elmfield Property Services
Need to find an Extension Builder near you for all your extension buildering work?
Elmfield Property Services provides a local, trusted ext...
"Basement conversion" - N6, job posted 16/10/23
A K Decoration & Building Serv
Need an Extension Builder in Hornsey? A K Decoration & Building Serv has been helping local clients (5 mile radius) with their extension buildering...
Fine Loft Construction
Fine Loft Construction are here to help customers who need an Extension Builder in Hornsey. We offer a competitive rate to complete all your extens...
KJV CONSTRUCTION LTD
KJV CONSTRUCTION LTD is an established and experienced local extension builder in Hornsey. Please contact us for a free, no obligation quote and co...
London Metropolitan Construction Ltd
London Metropolitan Construction Ltd is and property refurbishment and renovation company based and operating throughout London undertaking new bui...
AF Builders & Decorators Ltd
Our building services company AF Builders & Decorators Ltd has 20 years of experience in the industry. Since then we have been helping customers in...
£46/hr
£293/day
BM Lofts Limited
Need an Extension Builder in Hornsey? BM Lofts Limited has been helping local clients (5 mile radius) with their extension buildering jobs for many...
£45/hr
£282/day
M Collins Builders Ltd
Michael Collins Builders are experts in domestic conversions and extensions - drawing on over 25 years experience in the trade. We have built up a ...
£38/hr
£240/day
OAKWOOD CONSTRUCTION UK LTD
Need to find an Extension Builder near you for all your extension buildering work?
OAKWOOD CONSTRUCTION UK LTD provides a local, trusted ex...
£43/hr
£267/day
Brothers Group
Our building services company Brothers Group have been helping customers in North, East and West London and the surrounding area by providing profe...
£47/hr
£292/day
Mel Massey Studio
Mel Massey Studio, based in Finsbury Park, North London, offers interior design, interior styling and project management. With over 10 years of exp...
£43/hr
£265/day
Portico design and build ltd
Hornsey Greater London, N8
We have worked with homeowners all over London and designers to produce work we think you'll love. Our past projects include both new construction ...
£39/hr
£245/day
Portico design and build ltd
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£41/hr
£253/day
Gardens Dwarfs Home & Garden Service
Whether it's garden design, a garden studio or home renovations - we can do it. What you show me, what you imagine, we can build. Contact us now fo...
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Use these steps to find Extension Builders in Hornsey for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in Hornsey. 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 Hornsey 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 - £26,144
Garden office - £10,144
Granny annexe - £87,144
Build a flat roof extension - £22,144
Convert a Garage - £16,144
Hip to gable loft conversion - £42,144
Convert a bungalow loft - £29,144
Build a dormer loft conversion - £42,144
Build a swimming pool - £81,144
Build a Mansard loft conversion - £52,144
Concrete foundations - £6,394
Underpin a building - £17,644
Two storey extension - £88,216
Convert a basement - £39,120
Side return extension - £43,120
Loft conversion - £35,100
Garage - £18,644
Single storey extension - £57,880
Outbuilding - £10,144
Install an RSJ - £2,344
Build a kitchen extension - £42,144
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