From £60,120
Originally established in 1996 ELV8 has set the highest standards within the building industry, achieving success by winning numerous gold awards f...
From £64,440
We are a Design and Build Company, based in London.We focus on super prime and luxury residential renovations in and around London and internationa...
From £55,800
We Love Build - Three Arches is an established extension buildering business in Savile Row. We come highly recommended and provide competitive quot...
From £55,480
Luxe Refurbs is an established extension buildering business in Savile Row. We come highly recommended and provide competitive quotes for your work...
From £63,000
Starfish Properties is a trusted extension builder serving customers in Savile Row and the surrounding area. Contact us to today to get a competiti...
From £62,040
Experienced extension builder ready to quote for your work. Mayfair Design is the best extension builder in Savile Row. No obligation free quotes a...
From £56,280
Experienced extension builder ready to quote for your work. Cornerstone is the best extension builder in Savile Row. No obligation free quotes and ...
From £63,640
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £61,720
Big Mamma is an established and experienced local extension builder in Savile Row. Please contact us for a free, no obligation quote and competitiv...
From £56,760
Dominic Payte - Design & Build is an established extension buildering business in Savile Row. We come highly recommended and provide competitive qu...

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 - £17,746

Two storey extension - £88,370

Build a timber frame extension - £26,246

Build a swimming pool - £81,246

Single storey extension - £59,928

Side return extension - £44,272

Install an RSJ - £2,446

Outbuilding - £10,246

Build a Mansard loft conversion - £52,246

Loft conversion - £36,060

Build a kitchen extension - £42,246

Hip to gable loft conversion - £42,246

Granny annexe - £87,246

Garden office - £10,246

Convert a Garage - £16,246

Garage - £18,746

Build a flat roof extension - £22,246

Build a dormer loft conversion - £42,246

Concrete foundations - £6,496

Convert a bungalow loft - £29,246

Convert a basement - £40,272