How HaMuch saves you money
Post your job for free
We send your job to ALL N11 extension builders
Compare quotes
Available extension builders in N11 reply
Save Money
Select your affordable N11 extension builder
Post your job
SJ Expert Building Services
SJ Expert Building Services are here to help customers who need an Extension Builder in N11. We offer a competitive rate to complete all your exten...
Bellator Construction Ltd
Dimitar Vakavliev
We are reliable tradesmen delivering quality works with attention to detail
WT Construction Service Ltd
Friern Barnet, N11
Need the extension buildering job done quickly without breaking the bank? WT Construction Service Ltd offer fast, reliable, and affordable extensio...
Pavillion Building Services
Relax... you have found a reliable extension builder in N11. Pavillion Building Services is a friendly and reliable company based in N11 who consid...
Onyx Iv
Ivaylo Shkodrov
London, N11
Extremely reliable service . Flexibility, correct, listening customer. Wide experience.
Raf's Building Service
Need to find an Extension Builder near you for all your extension buildering work?
Raf's Building Service provides a local, trusted extensi...
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...
Odp Builders
Need an Extension Builder in N11? Odp Builders has been helping local clients (5 mile radius) with their extension buildering jobs for many years. ...
A K Decoration & Building Serv
Need an Extension Builder in N11? A K Decoration & Building Serv has been helping local clients (5 mile radius) with their extension buildering job...
Homeworks Design & Build Ltd
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
RSJ cost in N11
How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in N11 it ranges from £1,520 (Onyx Iv based in N11) to £2,784 (Homeworks Design & Build Ltd based in N20).
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 N11 by posting a job with HaMuch and we will send it to extension builders in N11.
Get extension builder rates instantly
Estimates for common extension builder jobs in N11;
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 - £17,570
Two storey extension - £88,104
Build a timber frame extension - £26,070
Build a swimming pool - £81,070
Single storey extension - £56,392
Side return extension - £42,283
Install an RSJ - £2,270
Outbuilding - £10,070
Build a Mansard loft conversion - £52,070
Loft conversion - £34,403
Build a kitchen extension - £42,070
Hip to gable loft conversion - £42,070
Granny annexe - £87,070
Garden office - £10,070
Convert a Garage - £16,070
Garage - £18,570
Build a flat roof extension - £22,070
Build a dormer loft conversion - £42,070
Concrete foundations - £6,320
Convert a bungalow loft - £29,070
Convert a basement - £38,283