Build a flat roof extension cost in RM3 - Sort by rates or availability
1 review
Torrington
From £22,192
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
Samuele Paolini
From £22,392
Need an Extension Builder in RM3? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
Ali & Sons Builders
From £22,152
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...
Buci builders ltd
From £23,024
Buci builders ltd is a trusted extension builder serving customers in RM3 and the surrounding area. Contact us to today to get a competitive quote ...
Local Boiler Plumbing & Heating Services
From £22,312
Local Boiler Plumbing & Heating Services is an established and experienced local extension builder in RM3. Please contact us for a free, no obligat...
CC&D BUILDING LTD
From £22,184
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in RM3. No obligation free quotes and m...
First guard Roofing
From £22,184
Relax... you have found a reliable extension builder in RM3. First guard Roofing is a friendly and reliable company based in RM3 who consider no jo...
HOUSE BUILDING SERVICES LIMITED
From £22,616
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in RM3 and the surrounding area. Contact us to today to get a comp...
Can design and Construction
From £21,880
Member since August 2025
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Bspec Ltd
From £22,248
At Building Services Contractors we pride ourselves on an efficient and friendly service, and strive to achieve 100% customer satisfaction.
Flat roof extension cost in RM3
A flat roof extension ranges from the cheapest of £21,880 (Can design and Construction based in Ig11) to the dearest of £23,024 (Buci builders ltd based in SE27), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in RM3 by posting a job with HaMuch. We'll send it to extension builders in RM3.
- How much does a flat roof extension cost?
- Flat roof extension cost per m2
- Factors affecting the cost of flat roof extensions
- Advantages and disadvantages of flat roofs
- Which is cheaper: a flat roof or pitched roof?
- How long does a flat roof extension take?
- Do you need planning permission for a flat roof extension?
- How long does a flat roof last?
- Can you walk on a flat roof extension?
- What insulation do I need for a flat roof extension?
