From £87,048
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in West Thurrock. No obligation fr...
From £86,920
Masonic Plumbing and Heating Ltd are here to help customers who need an Extension Builder in West Thurrock. We offer a competitive rate to complete...
From £87,192
Gb construction are here to help customers who need an Extension Builder in West Thurrock. We offer a competitive rate to complete all your extens...
From £87,184
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in West Thurrock. No obligation free qu...
From £86,984
JK Doors is a trusted extension builder serving customers in West Thurrock and the surrounding area. Contact us to today to get a competitive quote...
From £87,192
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £87,312
skilled worker who specializes in completing a wide range of building and renovation projects
From £87,616
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in West Thurrock and the surrounding area. Contact us to today to ...
From £87,200
Relax... you have found a reliable extension builder in West Thurrock. Derryard Construction Ltd is a friendly and reliable company based in West T...
From £86,968
B J CULLEN BUILDERS are here to help customers who need an Extension Builder in West Thurrock. We offer a competitive rate to complete all your ext...

Building a granny annexe ranges from £86,920 (Masonic Plumbing and Heating Ltd based in BR2) to £87,616 (HOUSE BUILDING SERVICES LIMITED based in DA16), 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 West Thurrock by posting a job with HaMuch. We will send it to extension builders in West Thurrock 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 - £17,662

Two storey extension - £88,242

Build a timber frame extension - £26,162

Build a swimming pool - £81,162

Single storey extension - £58,232

Side return extension - £43,318

Install an RSJ - £2,362

Outbuilding - £10,162

Build a Mansard loft conversion - £52,162

Loft conversion - £35,265

Build a kitchen extension - £42,162

Hip to gable loft conversion - £42,162

Granny annexe - £87,162

Garden office - £10,162

Convert a Garage - £16,162

Garage - £18,662

Build a flat roof extension - £22,162

Build a dormer loft conversion - £42,162

Concrete foundations - £6,412

Convert a bungalow loft - £29,162

Convert a basement - £39,318