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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 Leicester Square and the surrounding area. Contact us to today to get a co...
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
Jay Reid
Darren Bergin
Relax... you have found a reliable extension builder in Leicester Square. First guard Roofing is a friendly and reliable company based in Leicester...
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in Leicester Square. No oblig...
CK Constructions & Development Ltd is a trusted extension builder serving customers in Leicester Square and the surrounding area. Contact us to tod...
A to Z Builders Ltd are here to help customers who need an Extension Builder in Leicester Square. We offer a competitive rate to complete all your ...
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in Leicester Square. No obligat...
JK Doors is a trusted extension builder serving customers in Leicester Square and the surrounding area. Contact us to today to get a competitive qu...

Outbuilding costs in Leicester Square range from the cheapest of £9,976 (SLS BUILDERS LIMITED based in NW5) to the dearest of £12,320 (Reid and Co Developments Ltd based in NW8), 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 Leicester Square 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 - £17,860

Two storey extension - £88,540

Build a timber frame extension - £26,360

Build a swimming pool - £81,360

Single storey extension - £62,200

Side return extension - £45,550

Install an RSJ - £2,560

Outbuilding - £10,360

Build a Mansard loft conversion - £52,360

Loft conversion - £37,125

Build a kitchen extension - £42,360

Hip to gable loft conversion - £42,360

Granny annexe - £87,360

Garden office - £10,360

Convert a Garage - £16,360

Garage - £18,860

Build a flat roof extension - £22,360

Build a dormer loft conversion - £42,360

Concrete foundations - £6,610

Convert a bungalow loft - £29,360

Convert a basement - £41,550