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JK Doors is a trusted extension builder serving customers in Royal Exchange and the surrounding area. Contact us to today to get a competitive quot...
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
Need an Extension Builder in Royal Exchange? Exquisite Design & Build Ltd has been helping local clients (5 mile radius) with their extension build...
Relax... you have found a reliable extension builder in Royal Exchange. London Trowel Co. is a friendly and reliable company based in Royal Exchang...
Trusted and professional extension builder in Royal Exchange. Experienced in all extension buildering work and keeping within budget and on quote. ...
Experienced extension builder ready to quote for your work. Glenward Builders Ltd is the best extension builder in Royal Exchange. No obligation fr...
CK Constructions & Development Ltd is a trusted extension builder serving customers in Royal Exchange and the surrounding area. Contact us to today...
A to Z Builders Ltd are here to help customers who need an Extension Builder in Royal Exchange. We offer a competitive rate to complete all your ex...
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in Royal Exchange. No obligatio...
GS Fabric Ltd is an established and experienced local extension builder in Royal Exchange. Please contact us for a free, no obligation quote and co...

Building a granny annexe ranges from £86,928 (GS Fabric Ltd based in E2) 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 Royal Exchange by posting a job with HaMuch. We will send it to extension builders in Royal Exchange 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