Max Dixon
We are a construction company specialising in all aspects of building works, loft construction Extension complete home renovation, structural ...
Beckenham, BR3
Cre8tive Contractors Ltd are here to help customers who need an Extension Builder in Beckenham. We offer a competitive rate to complete all your ex...
We provide our clients with excellent service and quality. Whether you are looking to extend or upgrade, our professional team has the skills and e...
John Mcdonagh
Watch our short video highlighting all our expertise and services here:
more than 10 y...
Glenn Miller
Relax... you have found a reliable extension builder in Beckenham. Glenn Miller Builders Limited is a friendly and reliable company based in Becken...
Julian Cafun
Need an Extension Builder in Beckenham? Saintflexs has been helping local clients (10 mile radius) with their extension buildering jobs for many y...
Relax... you have found a reliable extension builder in Beckenham. L M G Building Services (London) Ltd is a friendly and reliable company based in...
Beckenham, BR3
Experienced extension builder ready to quote for your work. Aviemore Building Contractors Ltd is the best extension builder in Beckenham. No obliga...
AAB Tile Installation & Repairs are here to help customers who need an Extension Builder in Beckenham. We offer a competitive rate to complete all ...
Stuart Bogazzi
Working as a builder for over 20 years now.
Family run business
Can sort any problem out and help build your dreams.

Underpinning ranges from £17,068 (Oaksure Construction based in CR0) to £17,876 (Saintflexs based in BR1), 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 Beckenham by posting a job with HaMuch and we will send it to extension builders in Beckenham.
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 - £17,644

Two storey extension - £88,216

Build a timber frame extension - £26,144

Build a swimming pool - £81,144

Single storey extension - £57,880

Side return extension - £43,120

Install an RSJ - £2,344

Outbuilding - £10,144

Build a Mansard loft conversion - £52,144

Loft conversion - £35,100

Build a kitchen extension - £42,144

Hip to gable loft conversion - £42,144

Granny annexe - £87,144

Garden office - £10,144

Convert a Garage - £16,144

Garage - £18,644

Build a flat roof extension - £22,144

Build a dormer loft conversion - £42,144

Concrete foundations - £6,394

Convert a bungalow loft - £29,144

Convert a basement - £39,120