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From £51,880
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...
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 E6. No obligation free quotes and ma...
G HAMID CONSTRUCTION LTD
East Ham, E6
Relax... you have found a reliable extension builder in E6. G HAMID CONSTRUCTION LTD is a friendly and reliable company based in E6 who consider no...
Derryard Construction Ltd
Relax... you have found a reliable extension builder in E6. Derryard Construction Ltd is a friendly and reliable company based in E6 who consider n...
Charlie Builder
Trusted and professional extension builder in E6. Experienced in all extension buildering work and keeping within budget and on quote. Charlie Buil...
Kunshi Services UK Ltd
Kunshi Services UK Ltd is a trusted extension builder serving customers in E6 and the surrounding area. Contact us to today to get a competitive qu...
KAROL OMILIAN BUILDING SERVICE
KAROL OMILIAN BUILDING SERVICE is a trusted extension builder serving customers in E6 and the surrounding area. Contact us to today to get a compet...
PJ Lane
Experienced extension builder ready to quote for your work. PJ Lane is the best extension builder in E6. No obligation free quotes and many happy c...
Albion Ra Ltd
Albion RA offers complete construction solutions for residential clients across Kent\nand the surrounding areas.\n\nOur specialist team has many ye...
M&J Builders
M&J Builders is a trusted extension builder serving customers in E6 and the surrounding area. Contact us to today to get a competitive quote for ex...
Mansard loft conversion cost in E6
Mansard loft conversions range from the cheapest installation of £51,880 (Can design and Construction based in Ig11) to the dearest of around £52,272 (Kunshi Services UK Ltd based in IG11).
While these estimates give you a good idea how much you'll pay for a mansard loft conversion, the only way to get an accurate price is to get real quotes from real builders.
Get quotes to install a mansard loft conversion in E6 by posting a job with HaMuch and we'll send it to extension builders in E6.
- How much does a mansard loft conversion cost?
- What is a mansard loft conversion?
- Factors that affect the cost of a mansard loft conversion
- Additional costs to consider with a mansard loft conversion
- How long does a mansard loft conversion take?
- Do I need planning permission for a mansard roof?
- What is the difference between a dormer and a mansard?
Get extension builder rates instantly
Estimates for common extension builder jobs in E6;
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 - £17,655
Two storey extension - £88,233
Build a timber frame extension - £26,155
Build a swimming pool - £81,155
Single storey extension - £58,104
Side return extension - £43,246
Install an RSJ - £2,355
Outbuilding - £10,155
Build a Mansard loft conversion - £52,155
Loft conversion - £35,205
Build a kitchen extension - £42,155
Hip to gable loft conversion - £42,155
Granny annexe - £87,155
Garden office - £10,155
Convert a Garage - £16,155
Garage - £18,655
Build a flat roof extension - £22,155
Build a dormer loft conversion - £42,155
Concrete foundations - £6,405
Convert a bungalow loft - £29,155
Convert a basement - £39,246