From £87,952
Hoddesdon, EN11
Experienced extension builder ready to quote for your work. T&R Builders Ltd is the best extension builder in EN11. No obligation free quotes and m...
From £88,276
We know it can be hard to find a builder that you can rely on. Donema Construction Vision Ltd has a wealth of experience and is known as one of the...
From £88,156
Hoddesdon, EN11
RECESS CONSTRUCTION LTD are here to help customers who need an Extension Builder in EN11. We offer a competitive rate to complete all your extensio...
From £88,636
Hopson Bros Services is a trusted extension builder serving customers in EN11 and the surrounding area. Contact us to today to get a competitive qu...
From £88,492
Hertfordshire, EN11
Jarman Tew Design Ltd is an established and experienced local extension builder in EN11. Please contact us for a free, no obligation quote and comp...
From £88,228
Need an Extension Builder in EN11? M J S BUILDERS T/A has been helping local clients (10 mile radius) with their extension buildering jobs for many...
From £88,096
Hertfordshire, EN11
Design and Create Solutions are a full-service UK based family owned carpentry company, committed to delivering a superior product and exceeding cl...
From £88,336
Need an Extension Builder in EN11? TJJ Construction Ltd has been helping local clients (10 mile radius) with their extension buildering jobs for ma...
From £90,088
Hoddesdon, EN11
Experienced extension builder ready to quote for your work. Atlas Facilities Services Limited is the best extension builder in EN11. No obligation ...
From £88,576
D E BRACKEN BUILDING SERVICES is an established and experienced local extension builder in EN11. Please contact us for a free, no obligation quote ...

Costs range from £87,952 (T&R Builders Ltd based in EN11) to £90,088 (Atlas Facilities Services Limited based in EN11), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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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 - £17,822

Two storey extension - £88,484

Build a timber frame extension - £26,322

Build a swimming pool - £81,322

Single storey extension - £61,448

Side return extension - £45,127

Install an RSJ - £2,522

Outbuilding - £10,322

Build a Mansard loft conversion - £52,322

Loft conversion - £36,773

Build a kitchen extension - £42,322

Hip to gable loft conversion - £42,322

Granny annexe - £87,322

Garden office - £10,322

Convert a Garage - £16,322

Garage - £18,822

Build a flat roof extension - £22,322

Build a dormer loft conversion - £42,322

Concrete foundations - £6,572

Convert a bungalow loft - £29,322

Convert a basement - £41,127