Cre8tive Contractors Ltd are here to help customers who need an Extension Builder in BR1. We offer a competitive rate to complete all your extensio...
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...
Julian Cafun
Bromley, BR1
Need an Extension Builder in BR1? Saintflexs has been helping local clients (10 mile radius) with their extension buildering jobs for many years. ...
AAB Tile Installation & Repairs are here to help customers who need an Extension Builder in BR1. We offer a competitive rate to complete all your e...
Experienced extension builder ready to quote for your work. Aumosa Ltd is the best extension builder in BR1. No obligation free quotes and many hap...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Relax... you have found a reliable extension builder in BR1. Upwards and Outwards is a friendly and reliable company based in BR1 who consider no j...
Need an Extension Builder in BR1? Loft Living has been helping local clients (5 mile radius) with their extension buildering jobs for many years. G...
As a well-established, FMB-approved construction company, we have offices in both North and South London. Because we operate out of Bromley and Isl...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in BR1 by posting a job with HaMuch and we will send it to extension builders in BR1.
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 - £17,683

Two storey extension - £88,275

Build a timber frame extension - £26,183

Build a swimming pool - £81,183

Single storey extension - £58,664

Side return extension - £43,561

Install an RSJ - £2,383

Outbuilding - £10,183

Build a Mansard loft conversion - £52,183

Loft conversion - £35,468

Build a kitchen extension - £42,183

Hip to gable loft conversion - £42,183

Granny annexe - £87,183

Garden office - £10,183

Convert a Garage - £16,183

Garage - £18,683

Build a flat roof extension - £22,183

Build a dormer loft conversion - £42,183

Concrete foundations - £6,433

Convert a bungalow loft - £29,183

Convert a basement - £39,561