From £6,354
South East Builders are here to help customers who need an Extension Builder in Brockley. We offer a competitive rate to complete all your extensio...
From £6,562
Greater London, SE4
Need to find an Extension Builder near you for all your extension buildering work?
blitbolt ltd provides a local, trusted extension builder...
From £6,450
We have a creative eye and like a challenge, often building bespoke and creative buildings and furniture. This is mixed with a wide experience of m...
From £6,250
Brockley Greater London, SE4
Need an Extension Builder in Brockley? Justin Bailey has been helping local clients (5 mile radius) with their extension buildering jobs for many y...
From £6,410
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,466
Our building services company Demiri Builder Ltd has 15 years’ experience in the industry. We have been helping customers in Lewisham and the sur...
From £6,634
Trusted and professional extension builder in Brockley. Experienced in all extension buildering work and keeping within budget and on quote. RM Bui...
From £6,290
Dule Vida Property Design Ltd is a trusted extension builder serving customers in Brockley and the surrounding area. Contact us to today to get a c...
From £6,370
Global Business BoxLttd are here to help customers who need an Extension Builder in Brockley. We offer a competitive rate to complete all your exte...
From £6,330
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Concrete foundations range from the £6,250 (Justin Bailey based in SE4) to £6,634 (RM Building (London) Ltd based in SE23) in Brockley.
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 Brockley by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.
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 - £17,662

Two storey extension - £88,242

Build a timber frame extension - £26,162

Build a swimming pool - £81,162

Single storey extension - £58,232

Side return extension - £43,318

Install an RSJ - £2,362

Outbuilding - £10,162

Build a Mansard loft conversion - £52,162

Loft conversion - £35,265

Build a kitchen extension - £42,162

Hip to gable loft conversion - £42,162

Granny annexe - £87,162

Garden office - £10,162

Convert a Garage - £16,162

Garage - £18,662

Build a flat roof extension - £22,162

Build a dormer loft conversion - £42,162

Concrete foundations - £6,412

Convert a bungalow loft - £29,162

Convert a basement - £39,318