Five times faster to build
Watertight in a fraction of the usual build time
A hup! extension can be built up to five times faster than traditional methods, with the structure typically made watertight within a week and far less time spent exposed to ongoing construction.
Complete design flexibility
Create a modern house extension in the style and size that suits your home
Your house extension can be designed around the style, size and character of your home. Whether you want a sleek contemporary house extension with full-height glazing and a flat roof, or a more traditional design that blends naturally with your existing property, hup! gives you the flexibility to create the look you want.
Choose where you want your windows and doors, select from our range of extension roof styles, and choose an external wall finish that complements your home.
Energy efficient by design
High performance insulation built into every hup! extension
hup! is five times more energy efficient than the average UK home, helping to reduce heat loss and keep your living space comfortable throughout the year. The system is also designed with sustainability in mind, producing zero manufacturing waste compared with many traditional building materials.
High quality finish
A perfect build every time
hup! is manufactured in a BBA-approved factory under controlled conditions, helping every modern house extension achieve a precise and consistent standard of construction.
Its patented Ultrapanel technology is also BBA approved and has achieved a lifespan rating of at least 60 years, providing long-term reassurance around the quality, strength and durability of your extension.
One team from design to completion
Complete project management from your hup! builder
Rex manages the complete project from initial design through to completion, giving you one coordinated team throughout. Advanced design software also reduces the need to organise architects or structural engineers separately.
The hup! system is pre-approved for Building Regulations, helping to simplify the process and keep your extension moving. Clear visualisations, timescales and pricing give you a clear understanding of your project before work begins.
Lightweight
Lightweight advanced building technology
hup! walls are lightweight enough for many conservatory conversions to reuse the existing base, avoiding the need for the heavier foundations often required with traditional brick construction.
The lightweight panels are also easier for installation teams to handle, helping speed up the build and reduce disruption around your home. With less material stored on site and a shorter installation period, there is also less impact on your garden during the project.
60% more carbon efficient
Cleaner to manufacture, not just faster to build
hup! is 60% more carbon efficient to manufacture than traditional brick, with zero waste during production and on site. It's a genuine environmental advantage that goes beyond simply building faster, helping to make hup! a more sustainable choice for your modern home extension.
hup! technology
Ground-breaking Ultrapanel technology at the heart of hup!
hup! walls
hup! walls are energy efficient, quick to build and can be positioned anywhere within your design.
hup! roofs
Choose the right hup! roof system for your modern house extension, with four styles to explore.
Windows & doors
hup! is compatible with a wide choice of windows and doors.
Wall Finishes
hup! is suitable for any external wall finish of your choice.
Tested for strength, safety and long-term performance
Independent accreditations behind every hup! extension
Every hup! extension Rex builds in Maidstone is supported by independent testing for structural strength, thermal performance, fire resistance and overall quality. Explore the accreditations in more detail and download the supporting certificates for the hup! system.
Building Regulations, pre-approved
Because hup! is pre-approved for Building Regulations, compliance on your Maidstone extension is quick and straightforward. Stroma, MFA and Assent are the independent Building Control inspectors, and each has pre-approved the hup! system.