From £17,500
Need an Extension Builder in Holloway? Bok Services Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for man...
From £17,484
Holloway, N7
Andreas Thomas Demetri is a trusted extension builder serving customers in Holloway and the surrounding area. Contact us to today to get a competit...
From £17,460
Experienced extension builder ready to quote for your work. D.W Baker is the best extension builder in Holloway. No obligation free quotes and many...
From £17,404
London, N7
Experienced extension builder ready to quote for your work. Nucleus Design Studio is the best extension builder in Holloway. No obligation free quo...
From £17,732
After spending 15 years working across various private practices, Richard decided to take the plunge and set up his own architecture and design com...
From £17,916
CMT Ltd is an established extension buildering business in Holloway. We come highly recommended and provide competitive quotes for your work.
From £17,388
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,636
Our building services company Brothers Group have been helping customers in North, East and West London and the surrounding area by providing profe...
From £17,404
JAMES REGAN CONSTRUCTION is a trusted extension builder serving customers in Holloway and the surrounding area. Contact us to today to get a compet...
From £17,836
Mel Massey Studio, based in Finsbury Park, North London, offers interior design, interior styling and project management. With over 10 years of exp...

Underpinning ranges from £17,388 (Warren House Construction Ltd based in N19) to £17,916 (CMT Ltd based in N1), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in Holloway by posting a job with HaMuch and we will send it to extension builders in Holloway.
"Underpin a building" - N7, job posted 01/01/70
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 - £17,576

Two storey extension - £88,114

Build a timber frame extension - £26,076

Build a swimming pool - £81,076

Single storey extension - £56,520

Side return extension - £42,355

Install an RSJ - £2,276

Outbuilding - £10,076

Build a Mansard loft conversion - £52,076

Loft conversion - £34,463

Build a kitchen extension - £42,076

Hip to gable loft conversion - £42,076

Granny annexe - £87,076

Garden office - £10,076

Convert a Garage - £16,076

Garage - £18,576

Build a flat roof extension - £22,076

Build a dormer loft conversion - £42,076

Concrete foundations - £6,326

Convert a bungalow loft - £29,076

Convert a basement - £38,355