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C & B Multi-Trader
C & B Multi-Trader is an established extension buildering business in RM18. We come highly recommended and provide competitive quotes for your work...
CIA Construction Limited
Experienced extension builder ready to quote for your work. CIA Construction Limited is the best extension builder in RM18. No obligation free quot...
Kaizer Berg Ltd
Kaizer Berg Ltd is an established and experienced local extension builder in RM18. Please contact us for a free, no obligation quote and competitiv...
From £57,080
Bungar & Co ltd
Bungar & Co ltd is a trusted extension builder serving customers in RM18 and the surrounding area. Contact us to today to get a competitive quote f...
From £56,920
Deen Construction & Renovations Ltd
Essex, RM18
Experienced extension builder ready to quote for your work. Deen Construction & Renovations Ltd is the best extension builder in RM18. No obligatio...
From £54,360
Deen Construction & Renovations Ltd
At Deen Construction & Renovations Ltd, we offer a one stop solution for a range of property Constructions & Renovation projects, Maintenance, Full...
From £56,920
Beautiful Kitchens, Bedrooms & Bathrooms
Beautiful Kitchens is a family-run company, owned and directed by husband and wife Debbie and Nigel Powell along with their daughter, Bethany, and ...
Extension builder estimates (based on hourly rates) to build a single storey extension in RM18
- How much does a single storey extension cost?
- Single storey extension cost calculator
- What size single storey extension can I build without planning permission?
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- How deep do foundations need to be for a single storey extension?
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Estimates for common extension builder jobs in RM18;
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 - £17,570
Two storey extension - £88,105
Build a timber frame extension - £26,070
Build a swimming pool - £81,070
Single storey extension - £56,394
Side return extension - £42,284
Install an RSJ - £2,270
Outbuilding - £10,070
Build a Mansard loft conversion - £52,070
Loft conversion - £34,404
Build a kitchen extension - £42,070
Hip to gable loft conversion - £42,070
Granny annexe - £87,070
Garden office - £10,070
Convert a Garage - £16,070
Garage - £18,570
Build a flat roof extension - £22,070
Build a dormer loft conversion - £42,070
Concrete foundations - £6,320
Convert a bungalow loft - £29,070
Convert a basement - £38,284