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A Star Construction
Relax... you have found a reliable extension builder in Harold Hill. A Star Construction is a friendly and reliable company based in Harold Hill wh...
"Cost regarding: Two storey extension. Currently we have a side garage, we wish to demolish this and build a two story extension. Property is semi detached and post code is RM2 5JX Please note, this property falls in the havering council Conservation area zone. Please if you can assist us..." - RM2, job posted 06/12/24
Housemartin Building Services
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion" - RM3, job posted 01/12/24
KERFIELD BUILDING SERVICES LTD
Need to find an Extension Builder near you for all your extension buildering work?
KERFIELD BUILDING SERVICES LTD provides a local, trusted...
ESSEX TIMBER BUILDINGS LTD
Peter Smith
ESSEX TIMBER BUILDINGS LTD is an established extension buildering business in Harold Hill. We come highly recommended and provide competitive quote...
Phull Design & Build Ltd
Phull Design & Build Ltd are here to help customers who need an Extension Builder in Harold Hill. We offer a competitive rate to complete all your ...
£39/hr
£242/day
Build Experts
We have been in the trade in over 10 years. We always strive to satisfy our client and go above and beyond.
£45/hr
£278/day
THAMESLINK BUILDING SRVCS LTD
Need to find an Extension Builder near you for all your extension buildering work?
THAMESLINK BUILDING SRVCS LTD provides a local, trusted ...
£45/hr
£282/day
A N BUILDING
Need to find an Extension Builder near you for all your extension buildering work?
A N BUILDING provides a local, trusted extension builder...
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Local Extension Builders in London Boroughs
Job estimates from extension builders near you
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.

Build a timber frame extension - £26,152

Garden office - £10,152

Granny annexe - £87,152

Build a flat roof extension - £22,152

Convert a Garage - £16,152

Hip to gable loft conversion - £42,152

Convert a bungalow loft - £29,152

Build a dormer loft conversion - £42,152

Build a swimming pool - £81,152

Build a Mansard loft conversion - £52,152

Concrete foundations - £6,402

Underpin a building - £17,652

Two storey extension - £88,228

Convert a basement - £39,210

Side return extension - £43,210

Loft conversion - £35,175

Garage - £18,652

Single storey extension - £58,040

Outbuilding - £10,152

Install an RSJ - £2,352

Build a kitchen extension - £42,152
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