Mews-House Mansard Storey, Marylebone W1
Marylebone, London (W1H)
Prime central London · 2024
The brief
A mews house in the heart of Marylebone needed a full extra floor, a proper master suite, in one of the most constrained building environments in the country. The house had a flat parapet roof with the height to go up, but the location, a narrow mews where scaffolding, deliveries and trades all compete for almost no space, made a conventional site build slow and disruptive.
What we did
We designed and built a new mansard-form storey to sit between the existing parapet walls, architecturally a classic Westminster mansard, but delivered as a brand-new 31 sqm floor rather than a conversion of an existing void. It was engineered and built in our North Yorkshire factory, then craned into place, finished in natural slate on the slopes with a single-ply membrane to the top and lead-clad dormers. The existing vaulted ceiling and the chimney were taken down to suit the new modules, a steel ring beam fitted to engineer’s spec, and a double-winding staircase installed to reach the new floor.
The new storey created a master bedroom with a walk-in dressing room and en-suite, built against approved planning drawings (GA107, November 2023), with Building Control approvals and structural engineering calculations included.
The result
A new top floor that reads as though it has always been part of the streetscape, delivered with factory precision and a fraction of the on-street disruption a traditional build would have caused in a setting this sensitive. A classic Marylebone roofline, a modern build method.
At a glance
Project Photos
Testimonials
Stephen Flower · Google
“Loft conversion completed with only 2-3 weeks of disruption – ModuLoft make miracles happen.”
ModuLoft provided a smooth and professional service from start to finish. Andrew’s design met the brief and the installation team were efficient, effective and on schedule. Tim the MD was communicative throughout and any small issues were dealt with a no-quibble attitude. I cannot recommend this company enough.
David Nicholson · Google
“Hard to tell from the ground floor that work was being carried out upstairs.”
ModuLoft have done an amazing job with our loft conversion. We now have a master bedroom and en-suite with a balcony view from a Velux MK19. Jim & Charlie were superb – we can’t praise them enough for all their hard work. They even hoovered up at the end of each day.
Steven Payne · Google
“Expectations were smashed – install teams have to be seen to be believed.”
Team would be on site at 8AM Monday morning, having driven 5 hours from North Yorkshire to us, and worked through to 8-9 at night. Professional and flexible throughout – last minute changes accommodated. After-sales and snagging support was exemplary. Great to see a British company really excelling at what they do.
Proven across hundreds of homes
We’ve delivered over 355 loft conversions across the country. See a selection of the homes and properties we have transformed.
Ready to add the space your home needs?
Tell us about your project and we’ll come back with a clear, fixed-price quote, no obligation, no pressure.
Other Solutions You Might Be Interested In
Considering a mansard or a new storey on your own home?
SMAS
Gas Safe registered
ISO 9001 Certified
NIC EIC – Domestic Installer
NIC EIC – Approved Contractor
VELUX Certified Installer
