01268 777130

About Us

Embark on a Legacy of Excellence with GJB Newbuild: Your Trusted Partner in Premium Window and Door Installations

Established in 2012 and proudly headquartered in Colchester, Essex, we’ve become known for providing the best service in the new build sector. Our journey, spanning over a decade, has been one of dedication, innovation, and relentless pursuit of excellence. 

From our beginnings, we’ve grown exponentially, expanding our reach across Essex, Cambridgeshire, Suffolk, Norfolk, Kent, and even further afield. The secret to our success? A simple yet unwavering commitment to quality and customer satisfaction. 

Our Expertise

Specialising in the supply and installation of premium windows and doors, we’ve built an enviable reputation among national builders. Our projects span from mid to large new build developments. But our versatility doesn’t end there. Upon request, we also cater to smaller contractors, breathing life into individual new build homes and crafting bespoke schemes tailored to unique visions. 

Awards & Recognition

Our dedication to excellence hasn’t gone unnoticed. In 2023, we were honoured to receive the Lovell Supply Chain Award – a testament to our industry-leading standards and commitment to our clients.  We have also won The NHBC Pride in the Job Award 3 years running in 2021/22/23.

Our Accreditations

We proudly boast accreditations from CHAS and Secure By Design, underscoring our commitment to safety, quality, and impeccable design. 

Why Choose Us?

Engaging with the GJB New Build team is more than just a transaction; it’s the beginning of a collaborative partnership. We bring our expertise to the table, working hand-in-hand with developers to understand their unique requirements and challenges. As specialists in the field, we offer Part L Compliant double and triple glazing solutions that seamlessly integrate with the vision of creating Future Ready Homes. We don’t just deliver products; we deliver solutions. Our knowledge extends to ensuring acoustic tranquillity and achieving remarkably low U Values of up to 0.8. With our unwavering commitment to aftercare, developers can be assured that their projects are supported long after completion. Let’s work together, combining your vision with our expertise, to create homes that stand the test of time. 


With over a decade in the industry, our team brings a wealth of knowledge to every project.


We partner with top brands like EuroCell, Sheerline, and Gallery44 to ensure every installation meets our rigorous standards.


From large-scale developments to bespoke homes, our portfolio showcases our versatility and adaptability.


Headed by an inspiring female leader, our team is a blend of diverse talents, all united by a single goal – your satisfaction.

GJB Newbuild’s proactive approach and reliability have been invaluable.

– Kelvin O’Dwyer-Heath – Persimmon Homes Suffolk 

Their dedication to not just us, but also to our customers, truly stands out.

– Jasmine Sissen, Permission Homes Anglia (Norfolk) 

Need help? Contact us

Embarking on a design project or contemplating a renovation? Our team of experts is always on hand to assist, guiding you through our aluminium range to find the perfect fit for your vision. 

    Let’s Build the Future

    Discover quality and innovation with GJB Newbuild, your destination for premium window and door installations. With elite partnerships and prestigious awards, we’re pioneering Future Ready Homes, transforming your vision into reality through a collaborative, customer-centric journey.