1 review
From £39,660
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 £41,910
Need an Extension Builder in RM4? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £39,210
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 £49,020
Buci builders ltd is a trusted extension builder serving customers in RM4 and the surrounding area. Contact us to today to get a competitive quote ...
From £41,010
Local Boiler Plumbing & Heating Services is an established and experienced local extension builder in RM4. Please contact us for a free, no obligat...
From £36,600
NISUP BUILDING SERVICES Company specializes in the domestic and commercial building industry :1. Refurbishm...
From £42,360
Krystian Wojasiewicz is a trusted extension builder serving customers in RM4 and the surrounding area. Contact us to today to get a competitive quo...
From £42,360
Platinum Electrics is a Branch off Platinum Premier Projects who deal in all types of construction projects. Platinum Electrics are based in London...
From £39,120
Experienced extension builder ready to quote for your work. Khetani Builders (UK) Ltd is the best extension builder in RM4. No obligation free quot...
From £36,420
V.S.P is a trusted extension builder serving customers in RM4 and the surrounding area. Contact us to today to get a competitive quote for extensio...

Comparing extension builders estimates for a Convert a basement 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 the cost to convert a basement in RM4 by posting a job with HaMuch and we will send it to extension builders in RM4.
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 - £17,790

Two storey extension - £88,436

Build a timber frame extension - £26,290

Build a swimming pool - £81,290

Single storey extension - £60,808

Side return extension - £44,767

Install an RSJ - £2,490

Outbuilding - £10,290

Build a Mansard loft conversion - £52,290

Loft conversion - £36,473

Build a kitchen extension - £42,290

Hip to gable loft conversion - £42,290

Granny annexe - £87,290

Garden office - £10,290

Convert a Garage - £16,290

Garage - £18,790

Build a flat roof extension - £22,290

Build a dormer loft conversion - £42,290

Concrete foundations - £6,540

Convert a bungalow loft - £29,290

Convert a basement - £40,767