Five times faster to build
hup!’s rapid-fit technology allows for construction to be completed five times faster than with conventional methods like brick and mortar, reducing project timelines by weeks or even months.
Extensions
Hup!
We're revolutionising the way we build extensions and it all starts with Ultraframe's hup! No matter the design, hup! allows your dream designs to be installed 5× faster, with more effective and stylish results. If you're looking to enhance your living space with a beautiful design, the choice is obvious — it's here at Realistic with hup!
Combining all the benefits of traditional home extensions, including orangeries, conservatories, garden rooms and more, hup! fuses the basics with the advanced, allowing intricate designs to be assembled and installed in a matter of days. Brighten up your home with hup! extensions from Realistic today. The future starts here.
The better way to build
Contact UsUltimate design flexibility
Choose where you want to put windows and doors within your hup! extension — the system’s flexibility means you can bring the extension or conservatory of your dreams to life.
Five times more energy efficient
hup!’s innovative materials offer exceptional thermal efficiency, helping you save on energy costs while providing a comfortable living space you can enjoy throughout the year.
High quality finish every time
All hup! components are custom-made for a flawless fit, eliminating the need for on-site cutting. Solid walls can be finished with brick, render, or cedar finishes.
One supplier, one project
hup! is designed for a single team to handle the entire construction process, managing your project from start to finish. No need to coordinate with multiple suppliers or installers.
60% more carbon efficient
Generating zero waste both during manufacturing and on-site, hup! is 60% more carbon-efficient to produce than brick structures, reducing your environmental footprint.
Why Choose hup! Extensions in Plymouth, Devon & Cornwall?
At Realistic Home Improvements, we design, supply and install high-performance hup! extensions across Plymouth, Devon and Cornwall. Using Ultraframe’s precision-engineered Ultrapanels, we deliver warm, bright spaces with faster build times, outstanding energy performance, and clean, low-disruption installation.
5× Faster Build Speed
Forget months of messy site work. The hup! system uses precision-engineered Ultrapanels manufactured off-site and rapidly assembled on your property. Our trained team can achieve a watertight shell in days—not weeks or months—dramatically cutting build time, minimising disruption, and letting you enjoy your new space up to five times faster than traditional brick construction.
Advanced Ultra-Insulation
Your hup! extension can be up to five times more energy efficient than the average UK home. Solid wall panels deliver incredibly low U-values, easily surpassing current Building Regulations. The result? A comfortable, year-round living space that’s never too hot or too cold—translating directly into lower heating bills.
Complete Design Freedom
In partnership with Ultraframe, we’re revolutionising extensions. hup! is an incredibly flexible building system that puts you in control—choose your roof style, arrange windows and walls to maximise light, and tailor every detail. Expertly manufactured Ultra-panels arrive ready to assemble, so everything fits precisely into place on site.
BBA-Approved
At the heart of hup! is Ultraframe’s patented Ultrapanel technology—an advanced, BBA-approved composite that creates a strong, slim-line structure. It’s significantly lighter than traditional construction yet robust enough for expansive glazing. Its lightweight nature can even allow re-use of existing conservatory foundations (subject to survey), saving cost and excavation time.
One Team, One Project
With hup!, there’s no juggling multiple trades. Our single, highly trained Realistic team handles the entire structure, removing scheduling conflicts and keeping your project moving. It’s a simpler way to build—faster progress, consistent quality, and clear communication throughout.
Built for a Better Future
hup! is a demonstrably greener way to build. Off-site fabrication is highly efficient, resulting in virtually zero site waste. The system is also shown to be around 60% more carbon-efficient to manufacture than traditional methods—helping lower both your energy bills and your carbon footprint from day one.
Transform Your Home with a hup! Extension
From concept to completion, our team makes extending simple. Book a free, no-obligation design consultation and discover how quickly we can bring your new space to life.
Get a Free hup! Quote
What Are hup! Extensions?
The hup! system is a revolutionary, prefabricated structural framework for home extensions and conservatory transformations. It’s a high-performance alternative to traditional brick construction you might see in orangeries or conservatories. At its core are innovative Ultrapanels — factory-engineered wall units that combine insulation and structure. These snap together on-site with a rapid connection system to form a strong, lightweight, precision shell.
This approach lets our expert installers make your extension watertight in days. The finished structure is five times more energy efficient than an average UK home and can be assembled five times faster than a traditional extension. Our hup! extensions have BBA approval and offer total design flexibility. Get in touch to see how we can bring your dream extension to life with hup!
Coster Hup! Extension
Discover how we transformed Barry’s Plymouth home (and became award-winning) with a modern hup! extension — complete with Durabase+ foundations, an UltraRoof vaulted ceiling and Origin bi-folding doors. A tired conservatory is now a bright, open-plan kitchen/living space that connects beautifully to the garden.
→ Read Barry’s full hup! case study
hup! Roof Options for Extensions in Plymouth, Devon & Cornwall
Pair Ultraframe’s precision-engineered hup! Ultrapanels with your ideal roof style for a faster, cleaner build and outstanding thermal performance. Choose from tiled, glass, hybrid, or contemporary flat-roof designs to create a warm, bright, permanent living space — installed with minimal disruption by Realistic Home Improvements.
hup! Tiled Roof
Choose the hup! Tiled Roof to perfectly blend your new extension with your existing home. We combine revolutionary Ultrapanel hup! walls with a high-performance, lightweight tiled roof system (such as UltraRoof).
This delivers a traditional aesthetic with modern insulation — a true warm roof that combats condensation and dramatically boosts energy efficiency. Enjoy a seamless, beautiful extension that’s up to five times more energy efficient than an average UK house and built in a fraction of the time.
hup! Glass Roof
For maximum light and an airy, conservatory-style feel, the hup! Glass Roof is ideal. It pairs the speed and thermal performance of hup! Ultrapanel walls with Ultraframe’s high-performance glass roof system.
The super-insulated walls provide a foundation that’s up to five times more energy efficient than average, while advanced glazing floods your room with daylight. Enjoy superior thermal control, stunning sightlines and minimal disruption during installation.
hup! Hybrid Roof
The hup! Hybrid Roof gives you the best of both — the insulation and permanence of a solid roof with strategically placed glazed panels to control light exactly where you want it.
Built on the hup! wall system, your structure is typically watertight in days and up to five times more energy efficient than the average home. It’s the perfect choice for dynamic, multi-purpose spaces.
hup! Flat Roof with Skylight
Achieve a sleek, contemporary look with a hup! Flat Roof & UltraSky Flat Skylight. The skylight bathes your room in natural light without compromising thermal performance.
Built on the rapid, BBA-approved hup! structure, your extension is completed in a fraction of the time. Super-insulated walls ensure five-times better energy performance for comfort all year round.
hup! Flat Roof with Lanterns
The hup! Flat Roof with Lanterns provides dramatic ceiling height and a striking architectural focal point. A raised glass lantern channels daylight deep into your space.
Powered by hup! Ultrapanel construction, structures become watertight in days, cutting site mess and time — while achieving up to five-times the energy efficiency of an average UK home.
Not sure which roof suits your home?
Book a free design consultation. We’ll compare tiled, glass, hybrid and flat-roof options for your space, budget and style — then build it quickly and cleanly with hup!
Get My Free hup! Design
Join the hup! Extension Revolution Today
Stop planning a disruptive, months-long build and start designing your dream extension with hup! This revolutionary system is the ultimate answer to slow, inefficient extensions. Engineered to be up to five times more energy efficient than the average UK home and typically watertight in days, hup! delivers a rapid, low-mess construction process without compromising on quality or design flexibility.
Whether you want a contemporary flat roof or a traditional tiled extension, hup! is faster, warmer and more cost-effective in the long run. Contact our friendly team at Realistic today to schedule your free design consultation and step into the future of home extensions.
- Free design consultation — clear advice, no pressure
- Watertight in days — clean, speedy installation
- 5× more energy efficient — warmer all year, lower bills
View The hup! Brochures
Brochures
Our Recent Work
Take a look at some of our recent installations for our customers across Plymouth, Devon and Cornwall.
