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Sevcan Construction
Relax... you have found a reliable extension builder in Erith. Sevcan Construction is a friendly and reliable company based in Erith who consider n...
MONOLITH CONSTRUCTION LTD
Need an Extension Builder in Erith? MONOLITH CONSTRUCTION LTD has been helping local clients (10 mile radius) with their extension buildering jobs ...
Buildem Ltd
Buildem Ltd is a trusted extension builder serving customers in Erith and the surrounding area. Contact us to today to get a competitive quote for ...
PFM General Building Services Ltd
Philip Boateg
Need to find an Extension Builder near you for all your extension buildering work?
PFM General Building Services Ltd provides a local, trus...
Liviu Toma
Experienced extension builder ready to quote for your work. Liviu Toma is the best extension builder in Erith. No obligation free quotes and many h...
Lover Build
Lover Build is an established and experienced local extension builder in Erith. Please contact us for a free, no obligation quote and competitive r...
Danni Building Services Ltd
Pedro
Need an Extension Builder in Erith? Danni Building Services Ltd has been helping local clients (10 mile radius) with their extension buildering job...
GW Building Solutions
Gary Woolcombe
I am an experienced builder, I jave been in the building game since I left college after doing a 2 year bricklaying apprenticeship.
I ha...
SV Roofing & Renovations
SV Roofing & Renovations are here to help customers who need an Extension Builder in Erith. We offer a competitive rate to complete all your extens...
Cheapest builders for loft conversion in Erith
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 Erith by posting your job to extension builders in Erith.
"Loft conversion" - ERITH, job posted 08/09/25
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Estimates for common extension builder jobs in Erith;
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 - £17,702
Two storey extension - £88,304
Build a timber frame extension - £26,202
Build a swimming pool - £81,202
Single storey extension - £59,048
Side return extension - £43,777
Install an RSJ - £2,402
Outbuilding - £10,202
Build a Mansard loft conversion - £52,202
Loft conversion - £35,648
Build a kitchen extension - £42,202
Hip to gable loft conversion - £42,202
Granny annexe - £87,202
Garden office - £10,202
Convert a Garage - £16,202
Garage - £18,702
Build a flat roof extension - £22,202
Build a dormer loft conversion - £42,202
Concrete foundations - £6,452
Convert a bungalow loft - £29,202
Convert a basement - £39,777