hup! home extensions in Portsmouth and beyond
A hup! extension gives you more room without months of upheaval. The walls and roof are made off site, so most extensions are watertight within a week and built around five times faster than brick. Whether you're after a rear extension, a side extension or a kitchen extension that opens onto the garden, AA Window Services designs and builds the whole thing, with your single storey extension cost agreed up front rather than drifting as the work goes on.
hup! extension technology explained
Every hup! extension is built on patented Ultrapanel technology, a building system that’s changing the way single storey extensions are built and priced.
Each component is engineered to millimetre accuracy, giving a strong, highly insulated structure with consistent quality on every project. That combination of structural strength and thermal efficiency helps AA Window Services build home extensions that stay comfortable and energy efficient all year round.
Explore hup! home extensions
Kitchen, rear and side extensions in Portsmouth
Kitchen extensions are the hup! project we're asked about most, usually with bifold or sliding doors onto the garden. Rear extensions suit most semis and terraces, while a side extension can make use of an awkward strip of land beside the house.
Whatever the layout, you get the same warm, BBA approved hup! structure and one team managing the build from start to finish. A house extension can quickly get complicated when you’re juggling several contractors, trades and suppliers, and one delay can knock everything else off course.
AA Window Services keeps it simple by handling design and build as one service, carried out by our own team. The hup! structure is precision made before work starts at your home, so there are fewer moving parts and less room for error, giving you a smoother, more predictable house extension from start to finish.
Single storey extensions built around your home
What shapes single storey extension cost?
How much does a single storey extension cost? The honest answer depends on size, roof style, glazing and finish. What a hup! extension removes is much of the uncertainty.
With the structure made to a fixed specification and our own team doing the build, there are fewer unknowns once work starts, and we'll talk you through every line of your quote before you commit.
Why choose hup! for your extension?
Five times faster to build
What would take months to build with traditional building methods will take weeks with hup!.
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Ultimate design flexibility
Place windows and doors anywhere in your design and get your dream hup! extension manufactured to your exact requirements.
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Five times more energy efficiency
Thanks to superior insulation hup! is five times more energy efficient than the average UK home helping to keep your heating bills low.
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High quality finish every time
Advanced manufacturing software means that every hup! fits together quickly and easily, every time, assuring you of a perfect build.
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One supplier, one project
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.
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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.
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"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.
Any questions?
AA Window Services are proud members of the hup! partner network. Choose us as your trusted hup! experts
How much does a single storey extension cost with hup!?
Can a hup! extension work on a terraced house in Portsmouth?
Do I need planning permission for a hup! home extension?
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