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From £6,130
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...
Sevcan Construction
Relax... you have found a reliable extension builder in Thamesmead. Sevcan Construction is a friendly and reliable company based in Thamesmead who ...
Kunshi Services UK Ltd
Kunshi Services UK Ltd is a trusted extension builder serving customers in Thamesmead and the surrounding area. Contact us to today to get a compet...
HOUSE BUILDING SERVICES LIMITED
Tommy House
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in Thamesmead and the surrounding area. Contact us to today to get...
MONOLITH CONSTRUCTION LTD
Need an Extension Builder in Thamesmead? MONOLITH CONSTRUCTION LTD has been helping local clients (10 mile radius) with their extension buildering ...
Buildem Ltd
Buildem Ltd is a trusted extension builder serving customers in Thamesmead and the surrounding area. Contact us to today to get a competitive quote...
Derryard Construction Ltd
Relax... you have found a reliable extension builder in Thamesmead. Derryard Construction Ltd is a friendly and reliable company based in Thamesmea...
AM Builder
Trusted and professional extension builder in Thamesmead. Experienced in all extension buildering work and keeping within budget and on quote. AM B...
PFM General Building Services Ltd
Philip Boateg
Need to find an Extension Builder near you for all your extension buildering work?
PFM General Building Services Ltd provides a local, trus...
Liviu Toma
Experienced extension builder ready to quote for your work. Liviu Toma is the best extension builder in Thamesmead. No obligation free quotes and m...
Concrete foundation costs in Thamesmead
Concrete foundations range from the £6,130 (Can design and Construction based in Ig11) to £6,866 (HOUSE BUILDING SERVICES LIMITED based in DA16) in Thamesmead.
Comparing extension builders estimates for laying concrete foundations gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Find out the exact cost of laying concrete foundations in Thamesmead by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.
- How much do foundations cost in the UK?
- What factors affect the cost of concrete foundations?
- What is the difference between a trench and a strip foundation?
- What is the difference between a concrete slab and a foundation?
- What is the minimum depth for a concrete foundation?
- Can I pour my own foundation?
- Can I pour my own concrete slab?
- How do you put a new foundation under an existing house?
Get extension builder rates instantly
Estimates for common extension builder jobs in Thamesmead;
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 - £17,740
Two storey extension - £88,360
Build a timber frame extension - £26,240
Build a swimming pool - £81,240
Single storey extension - £59,800
Side return extension - £44,200
Install an RSJ - £2,440
Outbuilding - £10,240
Build a Mansard loft conversion - £52,240
Loft conversion - £36,000
Build a kitchen extension - £42,240
Hip to gable loft conversion - £42,240
Granny annexe - £87,240
Garden office - £10,240
Convert a Garage - £16,240
Garage - £18,740
Build a flat roof extension - £22,240
Build a dormer loft conversion - £42,240
Concrete foundations - £6,490
Convert a bungalow loft - £29,240
Convert a basement - £40,200