From £6,242
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,594
Elite Building is an established extension buildering business in EC4Y. We come highly recommended and provide competitive quotes for your work.
From £6,738
Elite Building And Heating was founded by Davinder Dhanda in 2018. Based in Central London, Davinder Worked on Construction sites since the age of ...
From £6,506
Need an Extension Builder in EC4Y? Flow Property Services has been helping local clients (5 mile radius) with their extension buildering jobs for m...
From £6,354
SCANDIIN is an established and experienced local extension builder in EC4Y. Please contact us for a free, no obligation quote and competitive rates...
From £6,522
Experienced extension builder ready to quote for your work. Oxford West is the best extension builder in EC4Y. No obligation free quotes and many h...
From £6,170
Experienced extension builder ready to quote for your work. Kovacs Construction Ltd is the best extension builder in EC4Y. No obligation free quote...
From £6,522
At Kovacs Construction, you can rely on our talented builders and engineers to deliver unrivalled building services solutions. Let us show you our ...
From £6,642
We have the experience and knowledge to carry out any project, big or small. Our team of experts thoroughly plan the budget and manage your projec...
From £6,450
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Concrete foundations range from the £6,170 (Kovacs Construction Ltd based in EC1N) to £6,738 (Elite Building based in WC2A) in EC4Y.
Comparing extension builders estimates for laying concrete foundations gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Find out the exact cost of laying concrete foundations in EC4Y by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.
"Concrete foundation" - W1T
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 - £17,724

Two storey extension - £88,336

Build a timber frame extension - £26,224

Build a swimming pool - £81,224

Single storey extension - £59,480

Side return extension - £44,020

Install an RSJ - £2,424

Outbuilding - £10,224

Build a Mansard loft conversion - £52,224

Loft conversion - £35,850

Build a kitchen extension - £42,224

Hip to gable loft conversion - £42,224

Granny annexe - £87,224

Garden office - £10,224

Convert a Garage - £16,224

Garage - £18,724

Build a flat roof extension - £22,224

Build a dormer loft conversion - £42,224

Concrete foundations - £6,474

Convert a bungalow loft - £29,224

Convert a basement - £40,020