From £55,960
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Hayes. No obligation free quote...
From £61,080
Hi we have 15 years of experience in building and construction industry our specialization is bathrooms and renovations please have a look at the w...
From £75,480
Buci builders ltd is a trusted extension builder serving customers in Hayes and the surrounding area. Contact us to today to get a competitive quot...
From £63,480
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £62,840
Need an Extension Builder in Hayes? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many y...
From £53,400
NISUP BUILDING SERVICES Company specializes in the domestic and commercial building industry :1. Refurbishm...
From £63,640
Krystian Wojasiewicz is a trusted extension builder serving customers in Hayes and the surrounding area. Contact us to today to get a competitive q...
From £63,640
Platinum Electrics is a Branch off Platinum Premier Projects who deal in all types of construction projects. Platinum Electrics are based in London...
From £57,880
Experienced extension builder ready to quote for your work. Khetani Builders (UK) Ltd is the best extension builder in Hayes. No obligation free qu...
From £53,080
V.S.P is a trusted extension builder serving customers in Hayes and the surrounding area. Contact us to today to get a competitive quote for extens...

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 - £17,802

Two storey extension - £88,454

Build a timber frame extension - £26,302

Build a swimming pool - £81,302

Single storey extension - £61,048

Side return extension - £44,902

Install an RSJ - £2,502

Outbuilding - £10,302

Build a Mansard loft conversion - £52,302

Loft conversion - £36,585

Build a kitchen extension - £42,302

Hip to gable loft conversion - £42,302

Granny annexe - £87,302

Garden office - £10,302

Convert a Garage - £16,302

Garage - £18,802

Build a flat roof extension - £22,302

Build a dormer loft conversion - £42,302

Concrete foundations - £6,552

Convert a bungalow loft - £29,302

Convert a basement - £40,902