We help drive innovation in extension construction.

Ultimate Design Flexibility

Choose from five different roofs, coupled with walls, windows and doors in almost any design to create the perfect hup! for your home.

Five Times More Energy Efficient

hup! is kind to your pocket and the planet thanks to its outstanding energy efficiency credentials and zero waste manufacturing.

One Supplier, One Project

One Supplier, One Project - One team will handle the build of your hup! from start to finish so there are less worries about security and a simpler build schedule.

Five Times Faster To Build

hup!'s rapid connection technology means your new hup! can be built five times faster than with traditional building methods and materials.

High Quality Finish

Advanced manufacturing coupled with highly trained builders ensures a circle of quality for a perfect hup! every time.

60% More Carbon Efficient

60% more carbon efficient than a brick wall with zero waste in production and no site waste to dispose of. Ongoing fuel consumption and carbon emissions are also lower than a brick wall, thanks to its superior thermal performance.

A better way to extend your home.

Our bespoke house extensions, including orangeries, glazed and flat roof designs, create beautiful, light-filled living spaces that feel like a real room from day one. Using thermally efficient, regulation-approved, prefabricated components engineered off-site, we deliver a quick, high-quality installation that adds strength, style and long-term value to your home.

Benchmark Builders working in conjunction with Creative Spaces & hup!
hup! is a registered trademark of Ultraframe (UK) Ltd

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