From £46,090
By being involved in a variety of residential and commercial projects, we understand the needs of our clients and can complete different types of r...
From £43,300
Whetstone Greater London, N20
Nava Construction LTD a bespoke solution that will transform any space into a place you feel happy and content.
From £41,680
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £46,360
Whetstone, N20
Need an Extension Builder in Whetstone? Odp Builders has been helping local clients (5 mile radius) with their extension buildering jobs for many y...
From £40,870
Builder for London is an established and experienced local extension builder in Whetstone. Please contact us for a free, no obligation quote and co...
From £44,740
Whetstone, N20
Trusted and professional extension builder in Whetstone. Experienced in all extension buildering work and keeping within budget and on quote. D.J C...
From £41,860
Relax... you have found a reliable extension builder in Whetstone. A Sparky Technical Building Services is a friendly and reliable company based in...
From £48,070
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £43,660
I Builder are a well established, reliable and trustworthy company with over twenty years' experience.We are based in Barnet covering Barne...

Comparing extension builders estimates for Side return extension gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for a side return extention by posting your job to extension builders in Whetstone.
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 - £17,702

Two storey extension - £88,304

Build a timber frame extension - £26,202

Build a swimming pool - £81,202

Single storey extension - £59,048

Side return extension - £43,777

Install an RSJ - £2,402

Outbuilding - £10,202

Build a Mansard loft conversion - £52,202

Loft conversion - £35,648

Build a kitchen extension - £42,202

Hip to gable loft conversion - £42,202

Granny annexe - £87,202

Garden office - £10,202

Convert a Garage - £16,202

Garage - £18,702

Build a flat roof extension - £22,202

Build a dormer loft conversion - £42,202

Concrete foundations - £6,452

Convert a bungalow loft - £29,202

Convert a basement - £39,777