From £10,048
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in RM1. No obligation free quotes ...
1 review
From £10,192
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 £10,392
Need an Extension Builder in RM1? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £10,152
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 £11,024
Buci builders ltd is a trusted extension builder serving customers in RM1 and the surrounding area. Contact us to today to get a competitive quote ...
From £10,312
Local Boiler Plumbing & Heating Services is an established and experienced local extension builder in RM1. Please contact us for a free, no obligat...
From £9,920
NISUP BUILDING SERVICES Company specializes in the domestic and commercial building industry :1. Refurbishm...
From £10,432
Krystian Wojasiewicz is a trusted extension builder serving customers in RM1 and the surrounding area. Contact us to today to get a competitive quo...
From £10,144
Experienced extension builder ready to quote for your work. Khetani Builders (UK) Ltd is the best extension builder in RM1. No obligation free quot...
From £9,904
V.S.P is a trusted extension builder serving customers in RM1 and the surrounding area. Contact us to today to get a competitive quote for extensio...

Garden offices range from the cheapest of £9,904 (V.S.P based in NW10) to the dearest of £11,024 (Buci builders ltd based in SE27), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in RM1 by posting a job with HaMuch. We'll send it to extension builders in RM1.
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 - £17,752

Two storey extension - £88,378

Build a timber frame extension - £26,252

Build a swimming pool - £81,252

Single storey extension - £60,040

Side return extension - £44,335

Install an RSJ - £2,452

Outbuilding - £10,252

Build a Mansard loft conversion - £52,252

Loft conversion - £36,113

Build a kitchen extension - £42,252

Hip to gable loft conversion - £42,252

Granny annexe - £87,252

Garden office - £10,252

Convert a Garage - £16,252

Garage - £18,752

Build a flat roof extension - £22,252

Build a dormer loft conversion - £42,252

Concrete foundations - £6,502

Convert a bungalow loft - £29,252

Convert a basement - £40,335