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JK Doors is a trusted extension builder serving customers in Fleet Street and the surrounding area. Contact us to today to get a competitive quote ...
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 Fleet Street. London Trowel Co. is a friendly and reliable company based in Fleet Street wh...
Trusted and professional extension builder in Fleet Street. Experienced in all extension buildering work and keeping within budget and on quote. Th...
Darren Bergin
Relax... you have found a reliable extension builder in Fleet Street. First guard Roofing is a friendly and reliable company based in Fleet Street ...
CK Constructions & Development Ltd is a trusted extension builder serving customers in Fleet Street and the surrounding area. Contact us to today t...
A to Z Builders Ltd are here to help customers who need an Extension Builder in Fleet Street. We offer a competitive rate to complete all your exte...
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in Fleet Street. No obligation ...
GS Fabric Ltd is an established and experienced local extension builder in Fleet Street. Please contact us for a free, no obligation quote and comp...
JM Building Services is a trusted extension builder serving customers in Fleet Street and the surrounding area. Contact us to today to get a compet...

Outbuilding costs in Fleet Street range from the cheapest of £9,928 (GS Fabric Ltd based in E2) to the dearest of £10,376 (CK Constructions & Development Ltd based in WC1N), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in Fleet Street by posting a job with HaMuch and we will send it to extension builders.
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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 - £17,633

Two storey extension - £88,199

Build a timber frame extension - £26,133

Build a swimming pool - £81,133

Single storey extension - £57,656

Side return extension - £42,994

Install an RSJ - £2,333

Outbuilding - £10,133

Build a Mansard loft conversion - £52,133

Loft conversion - £34,995

Build a kitchen extension - £42,133

Hip to gable loft conversion - £42,133

Granny annexe - £87,133

Garden office - £10,133

Convert a Garage - £16,133

Garage - £18,633

Build a flat roof extension - £22,133

Build a dormer loft conversion - £42,133

Concrete foundations - £6,383

Convert a bungalow loft - £29,133

Convert a basement - £38,994