At Steel Frame Buildings Ltd, we specialise in designing and constructing high-quality light gauge steel frame annexes that offer the perfect combination of strength, style, and long-term value. Whether you’re looking to create additional living space for family, a private home office, or a self-contained rental unit or air b&b, our annexes provide a flexible and cost-effective solution.
About Our Annexes
Why Choose a Steel Frame Annexe?
Strength and Durability
Steel framing offers unmatched structural integrity, ensuring your annexe stands the test of time. Resistant to warping, pests, and weather damage, our annexes require minimal maintenance while offering maximum peace of mind.
Quick and Efficient Construction
Our prefabricated steel frame systems allow for faster build times compared to traditional construction. That means less disruption on site and a quicker turnaround from planning to completion. You can expect approximately 30-40% reduction in installation times versus traditional methods of construction.
Customisable to Your Needs
We offer fully bespoke designs tailored to your space, style preferences, and intended use – whether it’s for elderly relatives, guest accommodation, or even a small business space. We have an entire team in-house dedicated to creating a design that meets your requirements.
Energy Efficient and Comfortable
Our annexes are built with modern insulation and sustainable materials to ensure a comfortable living environment all year round, with reduced energy bills to match.
Adds Real Property Value
A well-designed annexe not only adds versatile space to your home – it significantly increases its market value. More and more buyers are looking for homes with flexible, self-contained living areas, making an annexe a wise long-term investment.

Built for Life – Backed by Expertise
With years of experience in steel frame construction, our team handles every stage of the process – from design and planning through to final delivery. We’re committed to delivering high-performance annexes that meet the latest building standards and exceed client expectations.
Whether you’re expanding for family, functionality, or financial return, a steel frame annexe from Steel Frame Buildings Ltd is the smart, sustainable choice.
Get in touch today to discuss your annexe project – and find out how we can help bring your vision to life.