How HaMuch saves you money
Post your job for free
We send your job to ALL SE19 extension builders
Compare quotes
Available extension builders in SE19 reply
Save Money
Select your affordable SE19 extension builder
Post your job
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...
Buci builders ltd
Robert Buci
Buci builders ltd is a trusted extension builder serving customers in SE19 and the surrounding area. Contact us to today to get a competitive quote...
Greens Gardening & Landscape Property Maintenance
John Mcdonagh
London, SE19
Watch our short video highlighting all our expertise and services here:
more than 10 y...
RCB Group Design & Build
Vasi J
No Call out charges!
All Jobs Fully Insured and Guaranteed !!!
All aspects of Plumbing, Heating and Drains....
..."I am very pleased with the work carried out. All very clear and transparent." - ROMFORD,reviewed 10/01/18, KELLY
PW Construction & Renovation Ltd
PW Construction & Renovation Ltd is a trusted extension builder serving customers in SE19 and the surrounding area. Contact us to today to get a co...
Glenn Miller Builders Limited
Glenn Miller
Relax... you have found a reliable extension builder in SE19. Glenn Miller Builders Limited is a friendly and reliable company based in SE19 who co...
K S BUILDERS (UK) LTD
Trusted and professional extension builder in SE19. Experienced in all extension buildering work and keeping within budget and on quote. K S BUILDE...
VDL Construction Ltd
Need to find an Extension Builder near you for all your extension buildering work?
VDL Construction Ltd provides a local, trusted extension...
Top Builders
Experienced extension builder ready to quote for your work. Top Builders is the best extension builder in SE19. No obligation free quotes and many ...
A & P Master Construction
Experienced extension builder ready to quote for your work. A & P Master Construction is the best extension builder in SE19. No obligation free quo...
Mansard loft conversion cost in SE19
Mansard loft conversions range from the cheapest installation of £51,952 (A & P Master Construction based in CR7) 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 SE19 by posting a job with HaMuch and we'll send it to extension builders in SE19.
- 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 SE19;
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 - £17,824
Two storey extension - £88,486
Build a timber frame extension - £26,324
Build a swimming pool - £81,324
Single storey extension - £61,480
Side return extension - £45,145
Install an RSJ - £2,524
Outbuilding - £10,324
Build a Mansard loft conversion - £52,324
Loft conversion - £36,788
Build a kitchen extension - £42,324
Hip to gable loft conversion - £42,324
Granny annexe - £87,324
Garden office - £10,324
Convert a Garage - £16,324
Garage - £18,824
Build a flat roof extension - £22,324
Build a dormer loft conversion - £42,324
Concrete foundations - £6,574
Convert a bungalow loft - £29,324
Convert a basement - £41,145