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From £2,376
Fedora and sons Ltd
MIHAI Martolea
Member since September 2026
Fedora and sons Ltd is a trusted extension builder serving customers in E7 and the surrounding area. Contact us to today to get a competitive quote...
CC&D BUILDING LTD
Catalin CIOBANU
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in E7. No obligation free quotes and ma...
M Saleem Builders
Forest Gate, E7
Relax... you have found a reliable extension builder in E7. M Saleem Builders is a friendly and reliable company based in E7 who consider no job as...
UK Drywall Ltd
UK Drywall Ltd is an established and experienced local extension builder in E7. Please contact us for a free, no obligation quote and competitive r...
KS Plastering SERVICE
Sampson Essien
Thistle Bonding Coat: Ideal for use on low-suction backgrounds such as brick or concrete blocks, this product provided a solid foundation, Thi...
GNB Construction Builders Ltd
Trusted and professional extension builder in E7. Experienced in all extension buildering work and keeping within budget and on quote. GNB Construc...
G HAMID CONSTRUCTION LTD
Relax... you have found a reliable extension builder in E7. G HAMID CONSTRUCTION LTD is a friendly and reliable company based in E7 who consider no...
Kaseno Group
Kaseno Group are here to help customers who need an Extension Builder in E7. We offer a competitive rate to complete all your extension buildering ...
Jhon
Experienced extension builder ready to quote for your work. Jhon is the best extension builder in E7. No obligation free quotes and many happy cust...
KAROL OMILIAN BUILDING SERVICE
KAROL OMILIAN BUILDING SERVICE is a trusted extension builder serving customers in E7 and the surrounding area. Contact us to today to get a compet...
RSJ cost in E7
How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in E7 it ranges from £2,096 (Jhon based in IG1) to £2,456 (KAROL OMILIAN BUILDING SERVICE based in E15).
Comparing extension builders estimates for fitting an RSJ gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get rates and quotes to install an RSJ in E7 by posting a job with HaMuch and we will send it to extension builders in E7.
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Estimates for common extension builder jobs in E7;
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 - £17,613
Two storey extension - £88,169
Build a timber frame extension - £26,113
Build a swimming pool - £81,113
Single storey extension - £57,256
Side return extension - £42,769
Install an RSJ - £2,313
Outbuilding - £10,113
Build a Mansard loft conversion - £52,113
Loft conversion - £34,808
Build a kitchen extension - £42,113
Hip to gable loft conversion - £42,113
Granny annexe - £87,113
Garden office - £10,113
Convert a Garage - £16,113
Garage - £18,613
Build a flat roof extension - £22,113
Build a dormer loft conversion - £42,113
Concrete foundations - £6,363
Convert a bungalow loft - £29,113
Convert a basement - £38,769