Pioneering Sustainability in the Built Environment
Experts in Compliance & Certification
Smart Strategies for a Greener Future
Trusted by Leading Developers & Architects

Expert Sustainability Consultants
RedSix is a nationally renowned sustainability consultancy, delivering exceptional services to the construction industry. Our expertise spans across projects with global companies and influential developers, showcasing our deep knowledge of the built environment and commitment to excellence.
We are specialists in BREEAM assessments and Net Zero Carbon strategies, leveraging our expertise and accreditations to guide our clients towards achieving ambitious sustainability goals. From planning to operational stages, we offer pragmatic and commercially sound advice tailored to each project’s unique needs.
At RedSix, we’re more than just a consultancy, we’re your trusted partners in sustainability. Our team of experienced professionals combines technical expertise with a personable, proactive approach. We deliver integrated solutions that address sustainability measures throughout every phase of your project, ensuring seamless execution and measurable outcomes.












Industry Leaders in Sustainability
At RedSix, we are at the forefront of sustainability in Wales and across the UK, delivering expert consultancy backed by the latest certifications and industry standards. As one of the only certified Carbon Lite assessors in Wales and a trusted provider of BREEAM, CEEQUAL, and WELL Building consultancy, we help clients achieve the highest levels of environmental performance.
Our team brings decades of experience, ensuring compliance with evolving sustainability benchmarks. With a proven track record of delivering high-impact, data-driven strategies, we are the trusted partner for developers, architects and contractors looking to build a greener future.
36
Projects certified to BREEAM Excellent standard or higher.
Over 40
Years of combined industry experience within the team.
6,111,283
Total sq ft. of BREEAM certified buildings
About

Our expert accredited team, with over 40 years of industry experience, ensures your project achieves its sustainability objectives while remaining cost-effective and efficient.
Services

Whether you need full sustainability assessments, project coordination, or compliance guidance, we provide tailored solutions that drive measurable impact.
Projects

Our projects showcase extensive experience across a vast array of sectors, we help clients navigate the complexities of sustainability with honest, practical, and commercially sound advice.
Speak To Our Consultants
Get in touch with our team today to discuss your specific project needs, with a zero obligation project consultation.
Insights, Events & News
January 29, 2025
Introducing the Carbon Literacy Course: Empowering Change in the Built Environment Take Action Against Climate Change with Our Carbon Literacy…
January 15, 2025
What’s on the Horizon for 2025? Insights and Innovations in BREEAM & Sustainable Construction 2025: A Turning Point for Sustainability…
January 10, 2025
A Year of Growth and Achievement: RedSix’s 2024 Highlights 2024: A Year to Remember at RedSix As we close the…