The off-site loft conversion. 
Craned on in a day.

As a UK leader in off-site modular construction, we build our patented loft conversions in our North Yorkshire factory, so you can track progress, make changes where needed, and get it all at a fixed price with no nasty surprises. Your new loft and attic conversions will be completed with minimal disruption, guaranteed quality control, and often lower costs than traditional builds. We’ve delivered over 355 loft extensions across the UK since 2015 with a 100% completion rate. Learn more about the benefits of off-site loft constructions.

Welcome to Moduloft

Residential Extensions, Re-engineered.

Traditional loft conversions are unpredictable, with shifting costs, overrunning timelines, and weeks of disruption. There’s a better way.

Why We Do Things Differently

Rather than building loft and vertical extensions on-site from the ground up, we design and manufacture modular loft and attic elements in our state-of-the-art North Yorkshire factory. This reduces on-site time, improves quality control, and gives you far greater certainty over cost and programme, whether you’re a homeowner wanting more space or a developer delivering projects at scale.

Our Off-Site Approach to Loft Conversions

We handle everything in loft conversion projects: architectural drawings, planning permissions, structural calculations, and construction. Because the structural work happens in our factory, installation is faster and far less disruptive than a traditional build. And because we remove the variables that cause projects to overrun, when we agree on a programme, we deliver it. We’ve never failed to complete a project.

Built for Homeowners and Developers

We work with homeowners who want more space without turning their home into a building site. We also work with developers and residential partners who need programme certainty and scalable delivery. See how our off-site construction process works.

London rooftop conversion adding an apartment onto the building with a balcony.

Who We Work With

For Homeowners
Gain the space your family needs without turning your home into a building site. Our controlled off-site approach reduces disruption and delivers a more predictable experience.

For Developers & Residential Partners
Deliver loft and rooftop solutions with improved programme certainty, controlled installation and scalable off-site methodology.

Bungalow Conversions

Finished detached bungalow loft conversion project.

Add a full additional storey to your bungalow and transform how your home works. Our controlled approach delivers more space with less disruption and clear, agreed timeframes.

Family Home Conversions

Detached property with a mansard loft conversion.

Expand your family home without the upheaval of a traditional build. We create more space through a clear, structured process that minimises disruption and ensures certainty.

London Conversions

london loft conversion

Loft and rooftop extensions for London townhouses, flats and prime residential buildings – delivered with planning sensitivity and controlled installation.

Semi-Detached Conversions

house

Unlock the full potential of your semi-detached home with a carefully planned loft extension. Designed for minimal disruption and delivered to an agreed programme.

Rooftop & Airspace Developments

Maximise your building’s value through rooftop and airspace development. Delivered with strong coordination, minimal disruption and clear control from start to finish.

Commercial Conversions

Add residential, office space, or a commercial loft conversion to existing buildings with control of time, cost and coordination. Our engineered off-site system reduces on-site exposure and improves delivery certainty.