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Our Elizabeth Twining Almshouses project in Richmond is now proudly listed on the Passive House Database. This certified Passive House new build demonstrates that high-performance energy efficiency can be achieved without compromising accessibility or aesthetics, offering a sustainable future for elderly residents with limited means.
The project consists of five terraced homes, built with a treated floor area of 281 m² using timber construction. Key technical highlights include:
Airtightness: n50 = 0.5/h, ensuring minimal heat loss.
Annual heating demand: Only 16 kWh/m²a, delivering ultra-low heating costs.
Thermal performance: Exterior wall U-value of 0.097 W/m²K, roof U-value of 0.089 W/m²K, and floor slab U-value of 0.093 W/m²K.
Heating system: Powered by Kensa ground-source heat pumps, with underfloor heating and domestic hot water integration.
Ventilation: Zehnder ComfoAir 160 HRV with an 89% heat recovery rate, ensuring excellent air quality and energy efficiency.
Renewable energy: Solar panels on the green roof generate 30 kWh/m²a, with electricity stored in individual batteries for each home.
These homes not only meet Passive House standards but also provide a financial lifeline for residents by reducing energy bills and promoting year-round comfort.
We’re proud to have delivered this forward-thinking project alongside Clive Chapman Architects and Zero Energy Passivhaus, showcasing Buxton’s commitment to sustainability and innovation in construction.
The Project Team:
Employer: The Richmond Charities
Contract Administrator/Architect: Clive Chapman Architects
PQS: Michael Garnham Associates Ltd
Structural Engineer: Fothergill & Company Ltd
M & E Consultant: Ingine
Civil Engineer (Drainage) Type A: Lanmor Consulting
Landscape Architect: The Landscape Partnership
Our amazing subcontractors