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SDS Constructions
Sean Smithers
Our building services company SDS Constructions has been established for many years and have been providing customers in Dagenham and the surroundi...
From £87,820
Can design and Construction
Erald Kanani
Member since August 2025
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Render
Experienced extension builder ready to quote for your work. Render is the best extension builder in Olympic Park. No obligation free quotes and man...
Decorating Building Service
Decorating Building Service are here to help customers who need an Extension Builder in Olympic Park. We offer a competitive rate to complete all y...
Sevcan Construction
Relax... you have found a reliable extension builder in Olympic Park. Sevcan Construction is a friendly and reliable company based in Olympic Park ...
Kunshi Services UK Ltd
Kunshi Services UK Ltd is a trusted extension builder serving customers in Olympic Park and the surrounding area. Contact us to today to get a comp...
From £88,264
Fedora and sons Ltd
MIHAI Martolea
Member since September 2026
Fedora and sons Ltd is a trusted extension builder serving customers in Olympic Park and the surrounding area. Contact us to today to get a competi...
RTC Plumbers
Shaik Jamal
Welcome to RTC Plumbers! With over 15 years of experience, we offer a range of plumbing services from simple repairs to complex installations, each...
ESK Builders
Need to find an Extension Builder near you for all your extension buildering work?
ESK Builders provides a local, trusted extension builder...
MD Building & Project Management Ltd
Need an Extension Builder in Olympic Park? MD Building & Project Management Ltd has been helping local clients (10 mile radius) with their extensio...
Cost of a two storey extension in Olympic Park
Costs range from £87,124 (RTC Plumbers based in RM6) to £89,068 (Render based in IG1), 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 Olympic Park;
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 - £17,673
Two storey extension - £88,259
Build a timber frame extension - £26,173
Build a swimming pool - £81,173
Single storey extension - £58,456
Side return extension - £43,444
Install an RSJ - £2,373
Outbuilding - £10,173
Build a Mansard loft conversion - £52,173
Loft conversion - £35,370
Build a kitchen extension - £42,173
Hip to gable loft conversion - £42,173
Granny annexe - £87,173
Garden office - £10,173
Convert a Garage - £16,173
Garage - £18,673
Build a flat roof extension - £22,173
Build a dormer loft conversion - £42,173
Concrete foundations - £6,423
Convert a bungalow loft - £29,173
Convert a basement - £39,444