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Gb construction
Gani Bush
Gb construction are here to help customers who need an Extension Builder in Croydon. We offer a competitive rate to complete all your extension bu...
Greens Gardening & Landscape Property Maintenance
John Mcdonagh
Watch our short video highlighting all our expertise and services here:
more than 10 y...
From £53,200
Banga Decoration
Sebastian Banga
Member since August 2025
Banga decoration. Is Base in south London for number of year Banga decoration is a small company. Wich provide an excellent job to the custom...
Glenn Miller Builders Limited
Glenn Miller
Relax... you have found a reliable extension builder in Croydon. Glenn Miller Builders Limited is a friendly and reliable company based in Croydon ...
L M G Building Services (London) Ltd
Relax... you have found a reliable extension builder in Croydon. L M G Building Services (London) Ltd is a friendly and reliable company based in C...
Aviemore Building Contractors Ltd
Experienced extension builder ready to quote for your work. Aviemore Building Contractors Ltd is the best extension builder in Croydon. No obligati...
QC11 LTD
Vas OPetrov
QC11 LTD are here to help customers who need an Extension Builder in Croydon. We offer a competitive rate to complete all your extension buildering...
SMC Property Maintenance
Croydon, CR0
Relax... you have found a reliable extension builder in Croydon. SMC Property Maintenance is a friendly and reliable company based in Croydon who c...
Oaksure Construction
Stuart Bogazzi
Working as a builder for over 20 years now.
Family run business
Can sort any problem out and help build your dreams.
Bhagtana & Co Construction
Croydon, CR0
Experienced extension builder ready to quote for your work. Bhagtana & Co Construction is the best extension builder in Croydon. No obligation free...
Mansard loft conversion cost in Croydon
Mansard loft conversions range from the cheapest installation of £51,568 (Oaksure Construction based in CR0) to the dearest of around £53,200 (Banga Decoration based in CR7).
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 Croydon by posting a job with HaMuch and we'll send it to extension builders in Croydon.
- 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?
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Estimates for common extension builder jobs in Croydon;
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 - £17,694
Two storey extension - £88,290
Build a timber frame extension - £26,194
Build a swimming pool - £81,194
Single storey extension - £58,872
Side return extension - £43,678
Install an RSJ - £2,394
Outbuilding - £10,194
Build a Mansard loft conversion - £52,194
Loft conversion - £35,565
Build a kitchen extension - £42,194
Hip to gable loft conversion - £42,194
Granny annexe - £87,194
Garden office - £10,194
Convert a Garage - £16,194
Garage - £18,694
Build a flat roof extension - £22,194
Build a dormer loft conversion - £42,194
Concrete foundations - £6,444
Convert a bungalow loft - £29,194
Convert a basement - £39,678