Wide angle view of hup! extension with bi-folding doors

A smarter way to build your home extension

Whether it is a rear extension, side extension or kitchen extension, every hup! extension is built five times faster than a traditional equivalent, with most projects watertight within a week.

Start your free quote

Build the space you need, without the hassle

Unlike traditional brick-and-block builds that can be slow, weather-dependent and disruptive, a hup! extension uses lightweight structural panels for a faster, cleaner way to add space, helping you create everything from an open-plan kitchen or family room to a garden-facing lounge, home office or flexible multi-use space in just weeks rather than months.

Explore hup! technology
3D render image of breakdown of hup! technology

Fewer trades, fewer delays, fewer surprises

Traditional extensions often involve an architect, a structural engineer and several separate trades working in sequence. A hup! extension removes much of that, with technology pre-approved by leading Building Control inspectors.
Start your project
Two sisters and family dog sitting on comfy grey sofa with bi-fold doors open

An investment that keeps paying back

The wall U-value of 0.17 is not just a spec sheet number. It is the reason heating costs stay lower long after the building work is finished and forgotten about.
Explore extensions
View of long home extension with hybrid glass roof and feature media wall

Why choose hup!

Back garden view with trendy plants and pebble stoned features
Minimal disruption to your home and routine

Minimal disruption to your home and routine

What would take months to build with traditional building methods will take weeks with hup!.

Learn more
Bespoke designs to match any architectural style

Bespoke designs to match any architectural style

Place windows and doors anywhere in your design and get your dream hup! extension manufactured to your exact requirements.

Learn more
Energy efficient home extensions designed for modern living

Energy efficient home extensions designed for modern living

Thanks to superior insulation hup! is five times more energy efficient than the average UK home helping to keep your heating bills low.

Learn more
The better way to build

The better way to build

Advanced manufacturing software means that every hup! fits together quickly and easily, every time, assuring you of a perfect build.

Learn more
Local knowledge and expert installation

Local knowledge and expert installation

We'll take care of the whole project, and thanks to our advanced design software, there is no need for costly architects or structural engineers.

Learn more
60% more carbon efficient

60% more carbon efficient

hup! is the sustainable way to extend your home. 60% more carbon efficient than a brick wall and zero waste in production and on site.

Learn more
hup! logo

"hup! is an absolute game changer"

Laura Jane Clark

Leading architect & star of BBC's Your Home Made Perfect, hup! brand ambassador

People often ask how they can add an extension or rebuild their unusable conservatory in the most efficient way possible - hupl! is definitely the answer. Basework is usually the biggest minefield and the biggest headache for homeowners, so having something where you can use the existing base, and don’t need to start digging down and just build, getting watertight in two or three days, it's an absolute game changer.

Request a free quote
Laura Jane Clark
Family dog with owner sitting down in family lounge
Working professionals sitting on kitchen island with breakfast counter

Any questions?

Is hup! compliant with Building Regulations?

I’m worried about costs spiralling and exceeding our budget.

I’ve heard horror stories about home extensions, what makes hup! different?

Is hup! too good to be true?

Still need help?

Visit our advice hub to find answers to questions, useful tips, and more

hup! Network Partner logo

We are proud to be part of the hup! Partner Network.

Update Cookie Preferences