From £55,960
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in UB9. No obligation free quotes ...
From £60,600
Member since August 2026
Relax... you have found a reliable extension builder in UB9. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in UB9 who cons...
1 review
From £58,840
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
From £58,840
Need an Extension Builder in UB9? VA Structures has been helping local clients (10 mile radius) with their extension buildering jobs for many years...
From £60,600
Trusted and professional extension builder in UB9. Experienced in all extension buildering work and keeping within budget and on quote. DC Build & ...
From £61,240
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £63,640
DP Services is a fully insured friendly local company which has been trading since 2002 and delivers high quality building work in domestic extensi...
From £58,040
I am a qualified, builder, electrician and plumber. I have been working in the construction industry for over 23 years and have built everything fr...
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 UB9 and the surrounding area. Contact us to today to get a competitive 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 - £17,822

Two storey extension - £88,482

Build a timber frame extension - £26,322

Build a swimming pool - £81,322

Single storey extension - £61,432

Side return extension - £45,118

Install an RSJ - £2,522

Outbuilding - £10,322

Build a Mansard loft conversion - £52,322

Loft conversion - £36,765

Build a kitchen extension - £42,322

Hip to gable loft conversion - £42,322

Granny annexe - £87,322

Garden office - £10,322

Convert a Garage - £16,322

Garage - £18,822

Build a flat roof extension - £22,322

Build a dormer loft conversion - £42,322

Concrete foundations - £6,572

Convert a bungalow loft - £29,322

Convert a basement - £41,118