Grade II Listed Central Lodge

Standard of build: Aiming for Passivhaus EnerPHit certification

Construction System: Full retrofit of existing to include internal wall insulation of wood fibre and lime plaster, with recycled newspaper insulation to the roofs. Basement conversion and extension created from reinforced concrete with EPS insulation and a contemporary sandstone cladding.

Windows: Existing windows fitted with vacuum glazing by Crystal Clear Glazing. New Viking windows by Retrofit Windows

Ventilation: Zehnder ComfoAir Q350 MVHR with semi-rigid ductwork by 21 Degrees

Heating and Hot Water: Air Source Heat Pump

Solar: 13 x monocrystalline modules with battery

Photography: Progress in Practice

Grade II Listed Lodge in the heart of Birkenhead Park, the world’s first municipal park. The project is being retrofitted to the EnerPHit standard (Passivhaus retrofit standard), potentially making it the first EnerPHit of a Listed building in the world. The project is not only pushing the boundaries of what is possible with historic buildings, but also contributes to research in this field being conducted by the University of Liverpool.

Due to complete spring 2026.