For over 22 years, Foundation and Finishing has been delivering Mansard Loft Conversions across Greater London. We reshape the rear roof slope to create generous, almost fullheight loft spaces that feel like an extra floor.
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Our Services
Mansard loft conversions involve altering the rear roof slope to a nearvertical angle, topped with a flat or gently sloping roof. This approach can create a larger and more regularshaped room than many other loft conversion types, making it popular in dense urban areas and period terraces. Mansards are especially common in conservation areas and parts of London where this roof form is already established.
Because mansards substantially alter the roof profile, they almost always require planning permission. We are experienced in preparing suitable designs, liaising with local authorities, and navigating conservation and heritage considerations. Structurally, mansards require careful engineering, including new walls, floors, and support for the altered roof. Our team manages the entire process, from planning and structure through to fitout, ensuring the finished space feels bright, comfortable, and well integrated with the rest of your home.
Creates a big, regular-shaped loft area that is easy to furnish and use.
Can feel more like a full additional floor than a simple loft room.
Particularly suited to period terraces and urban settings where mansard roofs are common.
Offers excellent scope for sizeable bedrooms, en-suites, and even dressing areas.
Maximises the amount of usable floor area available within the roof volume.
Adds substantial value to your property due to the scale and quality of the conversion.
Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.
Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.
Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.
We work with the same qualified tradespeople on every job. Gas engineers, electricians, builders, finishers. They know our standards and they deliver. One point of contact for you, zero coordination headaches.
We give you realistic timelines and pricing up front. If we discover something unexpected during the work, you know immediately. No hiding problems until it's too late.
Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.
Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.
We work with the same qualified tradespeople on every job. Gas engineers, electricians, builders, finishers. They know our standards and they deliver. One point of contact for you, zero coordination headaches.
We give you realistic timelines and pricing up front. If we discover something unexpected during the work, you know immediately. No hiding problems until it's too late.
Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.
Trusted Construction Services
Quality Craftsmanship & Reliability
Strong Foundations, Lasting Results
Professional & Committed Team
Trusted Construction Services
Quality Craftsmanship & Reliability
Strong Foundations, Lasting Results
Professional & Committed TeamOur Process
Here’s exactly how we handle every project, from start to finish.
Here's exactly how we handle every project, from start to finish.
We measure everything, talk through your vision, and tell you what will actually work in your space.
Fixed price. Fixed timeline. No surprises halfway through your project.
Same team from day one to completion. Weekly progress photos. Direct line to Fares whenever you need answers.
Mansards can provide more uniform headroom and a cleaner external appearance in some settings, particularly where this roof form is already common or required.
Yes, mansards nearly always require full planning consent. We handle all design and submission work on your behalf.
Often they are, but designs must be sensitive and comply with local guidance. We have experience working within these constraints.
There is significant external work and scaffolding, but much of the structural work is accessed via the roof. We plan carefully to manage disruption.
Yes, depending on property width and layout, you may be able to accommodate a bedroom, ensuite, and even a small study or dressing area.
