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SJ Expert Building Services
SJ Expert Building Services are here to help customers who need an Extension Builder in Friern Barnet. We offer a competitive rate to complete all ...
Bellator Construction Ltd
Dimitar Vakavliev
We are reliable tradesmen delivering quality works with attention to detail
WT Construction Service Ltd
Need the extension buildering job done quickly without breaking the bank? WT Construction Service Ltd offer fast, reliable, and affordable extensio...
New Finishes
New Finishes is a trusted extension builder serving customers in Friern Barnet and the surrounding area. Contact us to today to get a competitive q...
Pavillion Building Services
Relax... you have found a reliable extension builder in Friern Barnet. Pavillion Building Services is a friendly and reliable company based in Frie...
Wittick Building Ltd
Wittick Building Ltd is a trusted extension builder serving customers in Friern Barnet and the surrounding area. Contact us to today to get a compe...
Roni Lofts Conversions Ltd
Need an Extension Builder in Friern Barnet? Roni Lofts Conversions Ltd has been helping local clients (10 mile radius) with their extension builder...
GG CONSTRUCTION LTD
GG CONSTRUCTION LTD is a trusted extension builder serving customers in Friern Barnet and the surrounding area. Contact us to today to get a compet...
Onyx Iv
Ivaylo Shkodrov
Extremely reliable service . Flexibility, correct, listening customer. Wide experience.
Taylor Construction Services Ltd
Relax... you have found a reliable extension builder in Friern Barnet. Taylor Construction Services Ltd is a friendly and reliable company based in...
Extension builder estimates (based on hourly rates) to build a single storey extension in Friern Barnet
- How much does a single storey extension cost?
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Estimates for common extension builder jobs in Friern Barnet;
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.
Underpin a building - £17,522
Two storey extension - £88,034
Build a timber frame extension - £26,022
Build a swimming pool - £81,022
Single storey extension - £55,448
Side return extension - £41,752
Install an RSJ - £2,222
Outbuilding - £10,022
Build a Mansard loft conversion - £52,022
Loft conversion - £33,960
Build a kitchen extension - £42,022
Hip to gable loft conversion - £42,022
Granny annexe - £87,022
Garden office - £10,022
Convert a Garage - £16,022
Garage - £18,522
Build a flat roof extension - £22,022
Build a dormer loft conversion - £42,022
Concrete foundations - £6,272
Convert a bungalow loft - £29,022
Convert a basement - £37,752