From £52,080
Atelier 10 are here to help customers who need an Extension Builder in Herne Hill. We offer a competitive rate to complete all your extension build...
From £52,208
Trusted and professional extension builder in Herne Hill. Experienced in all extension buildering work and keeping within budget and on quote. Vida...
From £52,080
Quality Carpentry is a trusted extension builder serving customers in Herne Hill and the surrounding area. Contact us to today to get a competitive...
From £52,504
Business Email:info@ Glazing & Boarding With local glaziers available 24 hours a day, 7 days a week we...
From £52,024
We do all aspect of work in construction from basement to new build loft extension refurbishments
From £52,024
James Hall Property Solutions Ltd is a trusted extension builder serving customers in Herne Hill and the surrounding area. Contact us to today to g...
From £52,336
Our locally run, family building services company J&S Property Services has 65 years combined experience. We have been helping customers in London ...
From £52,056
Experienced extension builder ready to quote for your work. The Perfectionist is the best extension builder in Herne Hill. No obligation free quote...
From £52,504
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £52,352
Since first working together in 2007 we have steadily created a portfolio of excellent refurbishment commissions tailored to our clients’ satisfa...

Mansard loft conversions range from the cheapest installation of £52,024 (Asiya Property & Construction based in SE22) to the dearest of around £52,504 (Babar Jeweler Shop based in SE21).
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 Herne Hill by posting a job with HaMuch and we'll send it to extension builders in Herne Hill.
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 - £17,717

Two storey extension - £88,325

Build a timber frame extension - £26,217

Build a swimming pool - £81,217

Single storey extension - £59,336

Side return extension - £43,939

Install an RSJ - £2,417

Outbuilding - £10,217

Build a Mansard loft conversion - £52,217

Loft conversion - £35,783

Build a kitchen extension - £42,217

Hip to gable loft conversion - £42,217

Granny annexe - £87,217

Garden office - £10,217

Convert a Garage - £16,217

Garage - £18,717

Build a flat roof extension - £22,217

Build a dormer loft conversion - £42,217

Concrete foundations - £6,467

Convert a bungalow loft - £29,217

Convert a basement - £39,939