Millfield Green, Caddington

Millfield Green, a net zero retirement village in Caddington, Bedford, UK

Millfield Green is a flagship retirement living development in Bedfordshire, designed to set a new benchmark for sustainable later living. Developed by Inspired Villages, the scheme is recognised as the UK's first regulated net zero carbon retirement community, bringing together innovative low-carbon technologies with high-quality accommodation, health and wellbeing facilities, and community-focused spaces. The completed village will comprise 200 residential units delivered through a mix of cottages and low-rise apartment buildings, alongside a restaurant, bar, hydrotherapy pool, wellness centre, offices and associated care facilities.

Our Role

The Challenge

Delivering a retirement community of this scale presented an opportunity to demonstrate how ambitious sustainability objectives could be successfully integrated into a complex residential-led development without compromising resident comfort, operational performance or long-term viability.

Achieving regulated, net-zero carbon status required a carefully coordinated approach to building services, energy infrastructure and overall development performance. The challenge was to reduce carbon emissions, and to create a practical and efficient solution capable of supporting the day-to-day needs of a busy retirement community.

Our Role

We provided a comprehensive range of specialist services to support the delivery of the scheme, including:

Mechanical Engineering
Electrical Engineering
Public Health Engineering
Energy Efficient & Passive Design
Lift Engineering
Net Zero Carbon Design

Working collaboratively with the wider project team from an early stage, we helped develop a holistic energy strategy that would underpin the development’s net-zero carbon ambitions while supporting operational efficiency across the village.

Our Approach

At the heart of the project was a pioneering energy strategy that combined multiple sustainable technologies to minimise operational carbon emissions and maximise long-term performance.

The development incorporates a ground source heat pump heating system, mechanical ventilation with heat recovery, enhanced building fabric performance through improved U-values and G-values, and high-efficiency plant throughout the scheme. Renewable electricity generation is provided through a substantial photovoltaic array, helping to offset carbon emissions and support the development’s net-zero carbon objectives.

To further enhance building performance and operational management, all systems are digitally intelligent and metered, allowing the client to centrally monitor energy consumption and asset performance. The scheme also includes fast electric vehicle charging infrastructure for residents and visitors, supporting the transition towards low-carbon transport.

The Outcome

Millfield Green demonstrates how integrated design and early consideration of energy performance can help deliver ambitious sustainability targets at scale. By bringing together low-carbon technologies, renewable energy generation and coordinated engineering solutions, the development establishes a new model for retirement living that balances environmental responsibility with practicality and resident wellbeing.

The project showcases the value of a joined-up approach to design, where sustainability, operational performance and user experience are considered together from the outset to support successful project delivery and long-term value creation.

For more information about our expertise in net zero carbon design, retirement living developments and sustainable engineering solutions, please contact Paul Rushmer, our Mechanical and Electrical Engineering Group Director, or Katie Glaze our Sustainability Director.