How HaMuch saves you money
Post your job for free
We send your job to ALL Redbridge extension builders
Compare quotes
Available extension builders in Redbridge reply
Save Money
Select your affordable Redbridge extension builder
Post your job
From £21,880
Can design and Construction
Erald Kanani
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...
Render
Experienced extension builder ready to quote for your work. Render is the best extension builder in Redbridge. No obligation free quotes and many h...
Decorating Building Service
Decorating Building Service are here to help customers who need an Extension Builder in Redbridge. We offer a competitive rate to complete all your...
From £22,176
Fedora and sons Ltd
MIHAI Martolea
Member since September 2026
Fedora and sons Ltd is a trusted extension builder serving customers in Redbridge and the surrounding area. Contact us to today to get a competitiv...
CC&D BUILDING LTD
Catalin CIOBANU
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in Redbridge. No obligation free quotes...
MD Building & Project Management Ltd
Need an Extension Builder in Redbridge? MD Building & Project Management Ltd has been helping local clients (10 mile radius) with their extension b...
M Saleem Builders
Relax... you have found a reliable extension builder in Redbridge. M Saleem Builders is a friendly and reliable company based in Redbridge who cons...
UK Drywall Ltd
UK Drywall Ltd is an established and experienced local extension builder in Redbridge. Please contact us for a free, no obligation quote and compet...
KS Plastering SERVICE
Sampson Essien
Thistle Bonding Coat: Ideal for use on low-suction backgrounds such as brick or concrete blocks, this product provided a solid foundation, Thi...
G HAMID CONSTRUCTION LTD
Relax... you have found a reliable extension builder in Redbridge. G HAMID CONSTRUCTION LTD is a friendly and reliable company based in Redbridge w...
Flat roof extension cost in Redbridge
A flat roof extension ranges from the cheapest of £21,880 (Can design and Construction based in Ig11) to the dearest of £22,712 (Render based in IG1), 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 Redbridge by posting a job with HaMuch. We'll send it to extension builders in Redbridge.
- 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?
Get extension builder rates instantly
Estimates for common extension builder jobs in Redbridge;
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 - £17,702
Two storey extension - £88,302
Build a timber frame extension - £26,202
Build a swimming pool - £81,202
Single storey extension - £59,032
Side return extension - £43,768
Install an RSJ - £2,402
Outbuilding - £10,202
Build a Mansard loft conversion - £52,202
Loft conversion - £35,640
Build a kitchen extension - £42,202
Hip to gable loft conversion - £42,202
Granny annexe - £87,202
Garden office - £10,202
Convert a Garage - £16,202
Garage - £18,702
Build a flat roof extension - £22,202
Build a dormer loft conversion - £42,202
Concrete foundations - £6,452
Convert a bungalow loft - £29,202
Convert a basement - £39,768