Eco-build
Award-Winning Passive House Builders in East Sussex
We were one of the first construction companies to build a fully certified Passive House in East Sussex. This groundbreaking project won a Sussex Heritage Trust Award and was featured in both Passive House+ magazine and Grand Designs. It marked the beginning of our deep commitment to sustainable construction and energy-efficient design.
Why Sustainable Building Matters
With rising energy costs and increased focus on reducing our carbon footprint, we’ve rethought how we build. We now prioritise smarter material choices and design strategies to maximise energy efficiency — without compromising on craftsmanship, style, or detail.
Our Approach to Low-Energy Construction
The foundation of every energy-efficient home lies in two key principles:
Build Quality
Material Performance
High levels of insulation and airtightness are essential, but only if installed with care and precision. Done correctly, they dramatically reduce heat loss and energy use.
Technology That Improves Performance
We integrate advanced technologies to support energy efficiency, including:
Mechanical Ventilation with Heat Recovery (MVHR)
Improves airflow and retains heat in airtight homes
Solar PV Panels
Harness renewable energy to reduce electricity bills
Air Source Heat Pumps
A low-carbon heating solution
High-performance glazing
Optimises thermal performance and natural light
Sustainable Building for Every Budget
Every client has different needs and budgets. That’s why we focus on applying sustainable building principles at any scale. Even small changes — like better insulation or improved airtightness — can significantly boost the comfort and efficiency of your home.
Ready to build?
If you own land with development potential — in a rural location, on the outskirts of town, or within a prime urban area — our team can help you realise its full value and bring your vision to life.
Rexstone Builders Limited
Gatehouse Cottages
Gatehouse Lane
Framfield
East Sussex
TN22 5RS
T: 01825 890407
E: info@rexstonebuilders.co.uk