SLS BUILDERS LIMITED is a trusted extension builder serving customers in Marleybone and the surrounding area. Contact us to today to get a competit...
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 Marleybone. M & A UK Ltd is a friendly and reliable company based in Marleybone who conside...
Newpark Construction are here to help customers who need an Extension Builder in Marleybone. We offer a competitive rate to complete all your exten...
Jay Reid
Darren Bergin
Relax... you have found a reliable extension builder in Marleybone. First guard Roofing is a friendly and reliable company based in Marleybone who ...
CK Constructions & Development Ltd is a trusted extension builder serving customers in Marleybone and the surrounding area. Contact us to today to ...
A to Z Builders Ltd are here to help customers who need an Extension Builder in Marleybone. We offer a competitive rate to complete all your extens...
JK Doors is a trusted extension builder serving customers in Marleybone and the surrounding area. Contact us to today to get a competitive quote fo...
JM Building Services is a trusted extension builder serving customers in Marleybone and the surrounding area. Contact us to today to get a competit...

Underpinning ranges from £17,428 (BPS Building based in NW6) to £19,820 (Reid and Co Developments Ltd based in NW8), 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 Marleybone by posting a job with HaMuch and we will send it to extension builders in Marleybone.
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 - £17,831

Two storey extension - £88,497

Build a timber frame extension - £26,331

Build a swimming pool - £81,331

Single storey extension - £61,624

Side return extension - £45,226

Install an RSJ - £2,531

Outbuilding - £10,331

Build a Mansard loft conversion - £52,331

Loft conversion - £36,855

Build a kitchen extension - £42,331

Hip to gable loft conversion - £42,331

Granny annexe - £87,331

Garden office - £10,331

Convert a Garage - £16,331

Garage - £18,831

Build a flat roof extension - £22,331

Build a dormer loft conversion - £42,331

Concrete foundations - £6,581

Convert a bungalow loft - £29,331

Convert a basement - £41,226