Conservatory Conversion Cost Guide for 2026
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hup! house extension builder in Northampton
Rapid-build hup! house extensions
Are you considering a house extension in Northampton, Milton Keynes, Coventry, Leamington Spa or Stratford-upon-Avon? As your local hup! builder, Park Lane Windows combines innovative building technology with expert project management to create exceptional living spaces.
House extensions Milton Keynes and across the region
Park Lane Windows has fitted windows and doors across Northampton, Milton Keynes, Coventry, Leamington Spa and Stratford-upon-Avon for years, and that same reputation now backs our house extension work.
As a hup! builder, every extension we build follows a fixed national specification, so you get local service with a consistent national standard behind it.
hup! conservatory conversions
Think bigger for your conservatory conversion - replacing the roof is no longer the only option. With hup! use your existing base and completely reimagine the design.
hup! extensions
Highly energy efficient, fast to build, and hassle free. Built in a matter of days with minimal mess and disruption. Build the better way with hup!
hup! orangeries
A classic orangery look but with revolutionary technology. Your orangery dream could become a reality in less than a week as hup! is 5X faster to build than bricks and mortar.
hup! conservatories
hup! conservatories are a game changer. Revolutionary hup! technology ensures a perfect year-round temperature.
Why choose hup!
for your house extension
House extensions built 5x faster
What would take months to build house extensions with traditional building methods takes us only weeks with hup!.
Explore hup! technology
Ultimate design flexibility
Place windows and doors anywhere in your house extension design and get your dream hup! extension manufactured to your exact requirements.
Why choose hup!
Five times more energy efficient
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! house extension 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 house extension 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 build house extensions. 60% more carbon efficient than a brick wall and zero waste in production and on site.
Discover hup! technologyDesign and build all under one roof
Rather than coordinating separate architects, builders and project managers, Park Lane Windows delivers every project as one seamless service from the initial consultation through to completion.
With the revolutionary hup! system forming the foundation of our house extensions across Northampton, Leamington Spa and Coventry, Park Lane Windows combines proven project management expertise with industry-leading building technology to create exceptional living spaces.
Every house extension is delivered by one experienced team, ensuring consistent quality, clear communication and a smooth build from start to finish.
The better way to build house extensions
At the core of every hup! house extension is a revolutionary wall and roof system engineered to deliver exceptional performance. Combining innovative construction with outstanding thermal efficiency, the hup! system provides a modern alternative to traditional building methods.
"hup! is an absolute game changer"
Laura Jane Clark
Leading architect and BBC's Your Home Made Perfect star, 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.
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Any questions?
We are proud members of the hup! partner network. Choose us as your trusted hup! experts
Does Park Lane cover more than just Northampton?
Yes, Park Lane Windows covers Northampton, Milton Keynes, Coventry, Leamington Spa and Stratford-upon-Avon as its hup! Network Partner territory. Every hup! extension built across these towns follows the same patented specification, so location does not affect build quality or turnaround.
How much faster is a hup! extension to build?
A hup! extension is typically around five times faster than a traditional brick build, often watertight within a week. Park Lane Windows fits factory-manufactured wall panels rather than constructing entirely on site, cutting significant time off projects across all five towns it covers.
What proof is there that hup! extensions are energy efficient?
hup! extensions carry a wall U-value of 0.17, making them five times more energy efficient than the average UK home. This performance is consistent across every Park Lane Windows project, whether in Northampton, Coventry, or any of the other towns covered.
Still need help?
Visit our advice hub to find answers to questions, useful tips, and more
