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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 the extension buildering job done quickly without breaking the bank? SH Enterprise offer fast, reliable, and affordable extension buildering s...
SLS BUILDERS LIMITED is a trusted extension builder serving customers in Clerkenwell and the surrounding area. Contact us to today to get a competi...
Relax... you have found a reliable extension builder in Clerkenwell. London Trowel Co. is a friendly and reliable company based in Clerkenwell who ...
Trusted and professional extension builder in Clerkenwell. Experienced in all extension buildering work and keeping within budget and on quote. The...
Darren Bergin
Relax... you have found a reliable extension builder in Clerkenwell. First guard Roofing is a friendly and reliable company based in Clerkenwell wh...
CK Constructions & Development Ltd is a trusted extension builder serving customers in Clerkenwell 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 Clerkenwell. We offer a competitive rate to complete all your exten...
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in Clerkenwell. No obligation f...
JK Doors is a trusted extension builder serving customers in Clerkenwell and the surrounding area. Contact us to today to get a competitive quote f...

Garden offices range from the cheapest of £9,976 (SLS BUILDERS LIMITED based in NW5) to the dearest of £10,376 (CK Constructions & Development Ltd based in WC1N), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in Clerkenwell by posting a job with HaMuch. We'll send it to extension builders in Clerkenwell.
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 - £17,636

Two storey extension - £88,204

Build a timber frame extension - £26,136

Build a swimming pool - £81,136

Single storey extension - £57,720

Side return extension - £43,030

Install an RSJ - £2,336

Outbuilding - £10,136

Build a Mansard loft conversion - £52,136

Loft conversion - £35,025

Build a kitchen extension - £42,136

Hip to gable loft conversion - £42,136

Granny annexe - £87,136

Garden office - £10,136

Convert a Garage - £16,136

Garage - £18,636

Build a flat roof extension - £22,136

Build a dormer loft conversion - £42,136

Concrete foundations - £6,386

Convert a bungalow loft - £29,136

Convert a basement - £39,030