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Need an Extension Builder in Monument? Exquisite Design & Build Ltd has been helping local clients (5 mile radius) with their extension buildering ...
Need the extension buildering job done quickly without breaking the bank? SH Enterprise offer fast, reliable, and affordable extension buildering s...
Torrington Design
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
Relax... you have found a reliable extension builder in Monument. London Trowel Co. is a friendly and reliable company based in Monument who consid...
Trusted and professional extension builder in Monument. Experienced in all extension buildering work and keeping within budget and on quote. Thermo...
Experienced extension builder ready to quote for your work. Glenward Builders Ltd is the best extension builder in Monument. No obligation free quo...
CK Constructions & Development Ltd is a trusted extension builder serving customers in Monument and the surrounding area. Contact us to today to ge...
A to Z Builders Ltd are here to help customers who need an Extension Builder in Monument. We offer a competitive rate to complete all your extensio...
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in Monument. No obligation free...
JK Doors is a trusted extension builder serving customers in Monument and the surrounding area. Contact us to today to get a competitive quote for ...

Building a granny annexe ranges from £86,976 (A to Z Builders Ltd based in SW1P) to £87,376 (Exquisite Design & Build Ltd based in SE16), 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 Monument by posting a job with HaMuch. We will send it to extension builders in Monument 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 - £17,665

Two storey extension - £88,247

Build a timber frame extension - £26,165

Build a swimming pool - £81,165

Single storey extension - £58,296

Side return extension - £43,354

Install an RSJ - £2,365

Outbuilding - £10,165

Build a Mansard loft conversion - £52,165

Loft conversion - £35,295

Build a kitchen extension - £42,165

Hip to gable loft conversion - £42,165

Granny annexe - £87,165

Garden office - £10,165

Convert a Garage - £16,165

Garage - £18,665

Build a flat roof extension - £22,165

Build a dormer loft conversion - £42,165

Concrete foundations - £6,415

Convert a bungalow loft - £29,165

Convert a basement - £39,354