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JK Doors is a trusted extension builder serving customers in Covent Garden 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
SLS BUILDERS LIMITED is a trusted extension builder serving customers in Covent Garden and the surrounding area. Contact us to today to get a compe...
Darren Bergin
Relax... you have found a reliable extension builder in Covent Garden. First guard Roofing is a friendly and reliable company based in Covent Garde...
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in Covent Garden. No obligati...
CK Constructions & Development Ltd is a trusted extension builder serving customers in Covent Garden and the surrounding area. Contact us to today ...
A to Z Builders Ltd are here to help customers who need an Extension Builder in Covent Garden. We offer a competitive rate to complete all your ext...
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in Covent Garden. No obligation...
GS Fabric Ltd is an established and experienced local extension builder in Covent Garden. Please contact us for a free, no obligation quote and com...
JM Building Services is a trusted extension builder serving customers in Covent Garden and the surrounding area. Contact us to today to get a compe...

Comparing extension builders estimates for Loft conversion gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost of a loft conversion in Covent Garden by posting your job to extension builders in Covent Garden.
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 - £17,622

Two storey extension - £88,184

Build a timber frame extension - £26,122

Build a swimming pool - £81,122

Single storey extension - £57,448

Side return extension - £42,877

Install an RSJ - £2,322

Outbuilding - £10,122

Build a Mansard loft conversion - £52,122

Loft conversion - £34,898

Build a kitchen extension - £42,122

Hip to gable loft conversion - £42,122

Granny annexe - £87,122

Garden office - £10,122

Convert a Garage - £16,122

Garage - £18,622

Build a flat roof extension - £22,122

Build a dormer loft conversion - £42,122

Concrete foundations - £6,372

Convert a bungalow loft - £29,122

Convert a basement - £38,877