From £17,428
Rainham, RM13
Experienced extension builder ready to quote for your work. JN Prolux Building Services is the best extension builder in RM13. No obligation free q...
From £17,796
Experienced extension builder ready to quote for your work. J K Builders is the best extension builder in RM13. No obligation free quotes and many ...
From £17,564
Rainham, RM13
Moss Roofing & Sons is an established and experienced local extension builder in RM13. Please contact us for a free, no obligation quote and compet...
From £17,596
Experienced extension builder ready to quote for your work. DIAMOND BUILDING SERVICES is the best extension builder in RM13. No obligation free quo...
From £17,556
Rainham, RM13
Need to find an Extension Builder near you for all your extension buildering work?
CLASS ROOFING LTD provides a local, trusted extension bu...
From £17,548
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,764
Rainham, RM13
Extensive experience within domestic and commercial settings. Fitting lighting (downlights, light fittings, garden lighting, etc), bathroom/kit...
From £17,428
Trusted and professional extension builder in RM13. Experienced in all extension buildering work and keeping within budget and on quote. Elite Roof...
From £17,668
Rainham, RM13
M & M Plumbing & Heating is a trusted extension builder serving customers in RM13 and the surrounding area. Contact us to today to get a competitiv...
From £17,764
Relax... you have found a reliable extension builder in RM13. Biddy-sons is a friendly and reliable company based in RM13 who consider no job as to...

Underpinning ranges from £17,428 (JN Prolux Building Services based in RM13) to £17,796 (J K Builders based in RM13), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in RM13 by posting a job with HaMuch and we will send it to extension builders in RM13.
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 - £17,611

Two storey extension - £88,167

Build a timber frame extension - £26,111

Build a swimming pool - £81,111

Single storey extension - £57,224

Side return extension - £42,751

Install an RSJ - £2,311

Outbuilding - £10,111

Build a Mansard loft conversion - £52,111

Loft conversion - £34,793

Build a kitchen extension - £42,111

Hip to gable loft conversion - £42,111

Granny annexe - £87,111

Garden office - £10,111

Convert a Garage - £16,111

Garage - £18,611

Build a flat roof extension - £22,111

Build a dormer loft conversion - £42,111

Concrete foundations - £6,361

Convert a bungalow loft - £29,111

Convert a basement - £38,751