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DW Building
DW Building is a trusted extension builder serving customers in Botany Bay and the surrounding area. Contact us to today to get a competitive quote...
Colin Lynch Builders
Need an Extension Builder in Botany Bay? Colin Lynch Builders has been helping local clients (10 mile radius) with their extension buildering jobs ...
Wittick Building Ltd
Wittick Building Ltd is a trusted extension builder serving customers in Botany Bay and the surrounding area. Contact us to today to get a competit...
Roni Lofts Conversions Ltd
Need an Extension Builder in Botany Bay? Roni Lofts Conversions Ltd has been helping local clients (10 mile radius) with their extension buildering...
The00Company Ltd
Homeowners look no further if you want a qualified extension builder to work in your home. The00Company Ltd are tidy and neat, providing a quality ...
Home Projects
Relax... you have found a reliable extension builder in Botany Bay. Home Projects is a friendly and reliable company based in Botany Bay who consid...
R & I Builders
R & I Builders is an established extension buildering business in Botany Bay. We come highly recommended and provide competitive quotes for your wo...
EVS ARCHITECTURE & CONSTRUCTION LTD
HOW WE WORK?We are here to design the best places!Our experience includes projects all over the world, from small scaled projects to large resident...
AGK Building Services Ltd
AGK Building Services Ltd is a small family-run business with more than 20 years' experience in the building services industry. We have a team of d...
Cost of a two storey extension in Botany Bay
Costs range from £87,808 (Colin Lynch Builders based in EN3) to £88,648 (MM-Builders based in N9), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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- How much does a two storey extension cost?
- Factors affecting the cost of a double storey extension
- How much value does a two storey extension add to a property?
- Types of two storey extension
- How long does a two storey extension take to build?
- Do you need planning permission for a two storey extension?
- What is the 45-degree rule for two storey extensions?
- Do you need an architect for an extension?
- How to finance an extension
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Estimates for common extension builder jobs in Botany Bay;
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 - £17,699
Two storey extension - £88,299
Build a timber frame extension - £26,199
Build a swimming pool - £81,199
Single storey extension - £58,984
Side return extension - £43,741
Install an RSJ - £2,399
Outbuilding - £10,199
Build a Mansard loft conversion - £52,199
Loft conversion - £35,618
Build a kitchen extension - £42,199
Hip to gable loft conversion - £42,199
Granny annexe - £87,199
Garden office - £10,199
Convert a Garage - £16,199
Garage - £18,699
Build a flat roof extension - £22,199
Build a dormer loft conversion - £42,199
Concrete foundations - £6,449
Convert a bungalow loft - £29,199
Convert a basement - £39,741