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JK Doors is a trusted extension builder serving customers in Fetter Lane and the surrounding area. Contact us to today to get a competitive quote f...
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
SLS BUILDERS LIMITED is a trusted extension builder serving customers in Fetter Lane and the surrounding area. Contact us to today to get a competi...
Relax... you have found a reliable extension builder in Fetter Lane. London Trowel Co. is a friendly and reliable company based in Fetter Lane who ...
Trusted and professional extension builder in Fetter Lane. 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 Fetter Lane. First guard Roofing is a friendly and reliable company based in Fetter Lane wh...
CK Constructions & Development Ltd is a trusted extension builder serving customers in Fetter Lane 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 Fetter Lane. 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 Fetter Lane. No obligation f...
GS Fabric Ltd is an established and experienced local extension builder in Fetter Lane. Please contact us for a free, no obligation quote and compe...

Outbuilding costs in Fetter Lane 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 Fetter Lane by posting a job with HaMuch and we will send it to extension builders.
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 - £17,626

Two storey extension - £88,190

Build a timber frame extension - £26,126

Build a swimming pool - £81,126

Single storey extension - £57,528

Side return extension - £42,922

Install an RSJ - £2,326

Outbuilding - £10,126

Build a Mansard loft conversion - £52,126

Loft conversion - £34,935

Build a kitchen extension - £42,126

Hip to gable loft conversion - £42,126

Granny annexe - £87,126

Garden office - £10,126

Convert a Garage - £16,126

Garage - £18,626

Build a flat roof extension - £22,126

Build a dormer loft conversion - £42,126

Concrete foundations - £6,376

Convert a bungalow loft - £29,126

Convert a basement - £38,922