From £87,144
House Rendering Ltd is a trusted extension builder serving customers in WC2B and the surrounding area. Contact us to today to get a competitive quo...
From £87,240
Relax... you have found a reliable extension builder in WC2B. HouseUP is a friendly and reliable company based in WC2B who consider no job as too b...
From £87,200
Experienced extension builder ready to quote for your work. My Trusted Builder is the best extension builder in WC2B. No obligation free quotes and...
From £87,024
Need to find an Extension Builder near you for all your extension buildering work?
ORO Projects provides a local, trusted extension builder...
From £87,272
Trusted and professional extension builder in WC2B. Experienced in all extension buildering work and keeping within budget and on quote. ElleHaus h...
From £87,080
Whitehorse Build London offers a full management service running each project from design through to completion, removing many of the hassle associ...
From £87,096
We offer many services in both residential and commercial settings including:BathroomsBuilding & RenovationDecking & PavingDemolitionDoor Installat...
From £87,392
Matstone Projects Limited is an established extension buildering business in WC2B. We come highly recommended and provide competitive quotes for yo...
From £87,040
Rucco Property is a trusted extension builder serving customers in WC2B and the surrounding area. Contact us to today to get a competitive quote fo...
From £87,064
My Lady Builder is founded by Marion Watts, award winning property developerwith over 17 years experience in the industry. She hosted the Kensingto...

Building a granny annexe ranges from £87,024 (ORO Projects based in WC2H) to £87,392 (Matstone Projects Limited based in WC2H), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in WC2B by posting a job with HaMuch. We will send it to extension builders in WC2B who will be happy to help you.
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 - £17,655

Two storey extension - £88,233

Build a timber frame extension - £26,155

Build a swimming pool - £81,155

Single storey extension - £58,104

Side return extension - £43,246

Install an RSJ - £2,355

Outbuilding - £10,155

Build a Mansard loft conversion - £52,155

Loft conversion - £35,205

Build a kitchen extension - £42,155

Hip to gable loft conversion - £42,155

Granny annexe - £87,155

Garden office - £10,155

Convert a Garage - £16,155

Garage - £18,655

Build a flat roof extension - £22,155

Build a dormer loft conversion - £42,155

Concrete foundations - £6,405

Convert a bungalow loft - £29,155

Convert a basement - £39,246