Save up to 40% on building costs with Superstrux™ System 7 — assembled in days, not weeks. Choose your build option and transform your home.
Cost savings vs traditional builds
Faster than conventional methods
Watertight shell installation
Watch to see how our system works and what the full process is. From delivery to watertight shell — and why thousands of homeowners are choosing a smarter way to extend.
Every Superstrux™ panel is designed, engineered, and manufactured right here in Britain — supporting local jobs and ensuring the highest quality standards from factory to your front door.
UK Manufactured
Steel & Materials
Jobs Supported
Two ways to get your extension — pick the option that suits your project and budget.
Superstrux™ System 7 kit delivered to your site for assembly by your builder — all panels, fixings, OSB board, and waterproof membrane included.
Full professional installation by our team — Superstrux™ System 7 structure erected and watertight within 24 hours on site.
Complete interior and exterior finish guide prices are available when you create your personalised quote.
Watertight within 24 hours. All prices include VAT.
See exactly why thousands of homeowners are switching to Superstrux™.
Ready to save up to 40% on your extension?
Start Your Free Quote →Our team will help you choose the perfect build for your home and budget.
Talk to Us →10 reasons why Superstrux™ System 7 outperforms traditional builds in every way that matters.
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.
A next-generation solution for building house extensions and garden rooms — faster, smarter, and more cost-effective. Structures reach a waterproof stage in just 24hrs.
Cuts material and labour costs by up to 40%. Built to meet all building regulations, finished with brick, render, or cladding.
Get a Price →Achieve an authentic brick exterior without the weight or cost of traditional brickwork — using precision-cut brick slips on dedicated backing boards.
Purpose-made brick slip backing boards are fixed directly to the Superstrux™ panels. Lightweight yet incredibly rigid, they provide the perfect substrate for brick slips — no additional framework or render carrier needed.
Each board is mechanically fixed to the structure, creating a flat, true surface across the entire elevation. The pre-scored grid lines ensure every brick slip sits at the correct gauge — eliminating guesswork and speeding up the process.
Real clay brick slips are bonded to the backing board using a flexible adhesive. Available in dozens of colours and textures — from classic London stock to contemporary grey — so your extension blends seamlessly with your existing home or makes a bold statement.
Once pointed and cleaned, the result is indistinguishable from a traditionally built brick wall. You get a beautiful, weatherproof exterior that adds real kerb appeal — at a fraction of the weight, time, and cost of conventional brickwork.
See available Superstrux™ options.
A clear, 8-step journey — designed to keep you in control every step of the way.
Use our online configurator to design your extension and get an instant price estimate.
An architect visits to assess your site and help choose the right extension.
Select a trusted builder — or project manage the build yourself.
Your architect provides detailed plans; your builder prepares the foundations.
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. Interior work begins simultaneously.
Your extension is complete and ready to enjoy.
Clean, contemporary finish
Real brick look, lighter build-up
Low maintenance, modern lines
White & Anthracite
White & Anthracite
White & Anthracite
White & Anthracite
White & Anthracite
White & Anthracite
Bring your home extension ideas to life with clear, compliant drawings prepared by a qualified professional.
We work with a trusted network of independent, qualified architects across the country.
Find an Architect →Everything you need to know before getting started.
With Betta Space and the Superstrux™ System 7, a 3m × 3m shell starts from £5,770 inc. VAT (flat-pack kit) or £6,958 inc. VAT (professionally installed). This is up to 40% cheaper than a traditional brick-build extension of the same size. For a fully finished extension, get a personalised quote using our online configurator.
The Superstrux™ shell is erected and watertight within 24 hours on site. The full structure typically takes around 7 days — compared to 10–12 weeks for a traditional build. Interior and finishing work runs alongside exterior work to keep overall timescales as short as possible.
Yes. Superstrux™ System 7 is fully compliant with UK Building Regulations. It exceeds energy performance requirements with excellent insulation values, and all completed extensions are mortgage-ready. Our team will guide you through the building control process.
You can choose from render, brick slip finish (indistinguishable from real brickwork and available in dozens of colours), or composite cladding. All finishes are weatherproof and designed to match or complement your existing home.
The flat-pack option delivers all Superstrux™ panels, fixings, OSB board, and waterproof membrane to your site for your own builder to assemble — saving on labour costs. The installed option includes full professional erection by the Betta Space team, with the shell watertight within 24 hours.
Many single-storey rear extensions fall under Permitted Development rights and do not require planning permission. However, rules vary by property type, location, and size. We work with a trusted network of architects across the UK who can advise you and prepare any required drawings or applications.
Get instant access to our pricing configurator and discover exactly what your dream home extension could cost. An account will be created where you can maintain your quotes.
Your information is secure and will only be used to discuss your project.
