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JK Doors
JK Doors is a trusted extension builder serving customers in WC1X and the surrounding area. Contact us to today to get a competitive quote for exte...
Torrington
Torrington Design
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
First guard Roofing
Darren Bergin
Relax... you have found a reliable extension builder in WC1X. First guard Roofing is a friendly and reliable company based in WC1X who consider no ...
CK Constructions & Development Ltd
CK Constructions & Development Ltd is a trusted extension builder serving customers in WC1X and the surrounding area. Contact us to today to get a ...
JM Building Services
JM Building Services is a trusted extension builder serving customers in WC1X and the surrounding area. Contact us to today to get a competitive qu...
Buildwiser
Buildwiser is a trusted extension builder serving customers in WC1X and the surrounding area. Contact us to today to get a competitive quote for ex...
From £24,064
Q Lofts and Extensions
Anthony Sullivan
We build Lofts. We build Extensions. We undertake conversions. Our Terms and conditions apply as shown in our starter packs.
From £22,152
plansing
Plansing Ltd
Experience the best architectural design services with PLANSING, where we flawlessly integrate innovative architectural designer products to bring ...
From £22,040
TOP CONSTRUCTION
TOP CONSTRUCTION is an established extension buildering business in WC1X. We come highly recommended and provide competitive quotes for your work.<...
From £22,000
Bok Services Ltd
Need an Extension Builder in WC1X? Bok Services Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for many ye...
Flat roof extension cost in WC1X
A flat roof extension ranges from the cheapest of £21,984 (JK Doors based in W1W) to the dearest of £24,064 (Q Lofts and Extensions based in EC1R), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in WC1X by posting a job with HaMuch. We'll send it to extension builders in WC1X.
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Estimates for common extension builder jobs in WC1X;
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 - £17,825
Two storey extension - £88,487
Build a timber frame extension - £26,325
Build a swimming pool - £81,325
Single storey extension - £61,496
Side return extension - £45,154
Install an RSJ - £2,525
Outbuilding - £10,325
Build a Mansard loft conversion - £52,325
Loft conversion - £36,795
Build a kitchen extension - £42,325
Hip to gable loft conversion - £42,325
Granny annexe - £87,325
Garden office - £10,325
Convert a Garage - £16,325
Garage - £18,825
Build a flat roof extension - £22,325
Build a dormer loft conversion - £42,325
Concrete foundations - £6,575
Convert a bungalow loft - £29,325
Convert a basement - £41,154