Modern, cost-effective
HOUSE EXTENSIONS
1Save up to 40% on building costsSuperstrux™ System 7 builds are more cost-effective than traditional builds, reducing material and labour costs by up to 40%.
2Built extensions 3 times fasterSuperstrux™ System 7 extensions can be assembled in days, unlike traditional builds which often take weeks and are delayed by weather.
3Choose your build stageChoose from three flexible options: waterproof shell, finished exterior, or a fully completed extension – ready for furniture and instant use.
We do things "Betta"
Shell up in one day. Home stays weather-tight immediately.
Fixed pricing, reduced labour, no scaffold hire.
Wide spans without bulky supports. Perfect for bi-folds.
Millimetre-accurate for better fit and finish.
No mortar cure time. Less rain delays.
Exceeds Building Regs with excellent insulation.
Often avoids costly foundation upgrades.
100% recyclable, less waste, lower carbon.
Brick, render, timber, or cladding options.
Building Control compliant. Mortgage ready.
What is the process?
Use our online configurator to design your extension and get an instant price estimate.
Clear idea of costs before committing.
An architect visits to assess your site and help choose the right extension.
Planning permission may be required.
Select a trusted builder—or project manage the build yourself.
Your architect provides detailed plans; your builder prepares the foundations.
Precision required for a solid, level base.
Shell delivered to site. Choose full professional install or flat-pack kit.
Begin fitting roof lanterns, bi-fold doors, and other openings.
Install roof covering, guttering, and external finish (brick, render, or cladding).
Interior work can begin simultaneously.
Two teams work simultaneously—inside and out—for faster completion.
Your extension is complete and ready to enjoy.
Choose Your Build Stage
Structural Shell (from £8,491) +VAT
A durable Superstrux™ System 7 structure covered with OSB board and waterproof membrane – perfect for customers planning to finish the build in stages.
Move-in Ready (from £20,015) +VAT
Complete exterior and interior finish – including insulation, electrics, walls, and flooring. A ready-to-furnish extension built for immediate use.
Superstrux™ System 7 is a next-generation solution for building house extensions and garden rooms – faster, smarter, and more cost-effective. Unlike traditional brickwork that takes weeks and is often delayed by weather, Superstrux™ System 7 structures reach a waterproof stage in just 24hrs.
This innovative method cuts material and labour costs by up to 40%. Built to meet all building regulations, each project is based on your architect’s drawings and can be finished with a brick finish, render, or cladding. We offer full turnkey solutions or staged builds, giving you flexibility and even greater savings.
Superstrux™ System 7 vs Traditional Build
*most traditional builds are effected by rain and wind, causing major delays in construction.
Superstrux™ System 7 can be built year round with little to no constraints.
Example Superstrux™ Shell Prices with Installation
Available in any size. Made-to-measure.
Installed, Boarded and Water Tight within 24 Hours
Superstrux™ System 7 is a next-generation solution for building house extensions and garden rooms – faster, smarter, and more cost-effective. Unlike traditional builds that take weeks and are often delayed by weather, Superstrux™ System 7 structures reach a waterproof stage in just 24hrs.
Bring your home extension ideas to life with clear, compliant drawings prepared by a qualified professional.
Accurate architectural drawings are the foundation of a smooth extension project—they help visualise the design, guide builders on site, and support planning and building control.
Note: We are not architects. However, we work with a trusted network of independent, qualified architects across the country and can introduce you to a professional in your local area. Use your own or select from our comprehensive list.
EXTERNAL WALL FINISH OPTIONS
WINDOW & DOOR OPTIONS
Get instant access to our interactive tool and discover exactly what your dream home extension could cost. No obligation, no pressure — just clarity.
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