Burradoo Passivhaus
Residential: Single Dwelling
Passivhaus Plus Certification
Burradoo, NSW, 2024
A resplendent 160-year-old Himalayan cedar towers gracefully in the middle of a one-acre block in NSW’s Southern Highlands. For the project team, designing a new home here was a continual dance with the mature trees that so attracted the clients to this site. Soaring ceiling heights lend a grandeur to the expansive living spaces, which open through double doors to a north-facing courtyard with an outdoor kitchen and dining area. The floor plan delineates public and private areas, with three spacious bedrooms, two studies, and 2.5 bathrooms all thoughtfully accommodated.
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AIRTIGHTNESS n50 ACH@50pascals: 0.18
HEATING DEMAND (kWh/m².yr): 16
COOLING DEMAND (kWh/m².yr): 3
HEATING LOAD (W/m²): 9
PRIMARY ENERGY RENEWABLE DEMAND (PER): 48
PRIMARY ENERGY RENEWABLE GENERATION (PER): 65 -
LOCATION: Burradoo,NSW
NCC CLIMATE ZONE: 6
NATHERS CLIMATE ZONE: 24
YEAR OF COMPLETION: 2024
TREATED FLOOR AREA (PHPP sqm): 260
PROJECT TYPE: New build
SECTOR: Residential: Single Dwelling
CONSTRUCTION TYPE: Timber Frame, Plastic void former concrete slab
CERTIFICATION LEVEL/ ENERGY STANDARD: Passivhaus Plus -
MHRV SYSTEM: Zehnder ComfoAir Q350
DOMESTIC HOT WATER SYSTEM: Sanden Eco Plus 315L
EXTERIOR WALL TYPE, U-VALUE: Insulated 150mm timber framed wall with 45mm insulated service cavity, 0.214
FLOOR SLAB TYPE, U-VALUE: Plastic void former concrete slab with 100mm XPS underslab insulation, 0.264
ROOF INSULATION TYPE, MANUFACTURER: Knauf jet stream max
ROOF CONSTRUCTION: Timber framed truss roof
ROOF ENVELOPE U-VALUE: 0.083
GLAZING TYPE, MANUFACTURER, U W-VALUE, G-VALUE, U G-VALUE: Triple, Logikhaus, 1.1, 0.51 , 0.67
EXTERNAL DOOR TYPE, MANUFACTURER: Glazed door, Logikaus -
NUMBER OF MODULES: 32
HEIGHT, WIDTH OF ONE MODULE (m, m) : 1.7 ,1.1
EFFICIENCY (%): 98
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A covered walkway connects the house to the barn, which is constructed from the same materials and processes. The two gables flank the formal entrance, creating a focal point on the south facade. The barn provides guest accommodation and also houses a games room, entertaining area and office.
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This project highlights the inherent flexibility of the Passivhaus Standard.
The form factor and orientation required to fit the site and the client’s brief were less than ideal from a technical point of view but could be accommodated.
The H-shaped plan has two gable ends facing north. While this limits winter sun, it provides excellent protection from summer overheating.
Project Members
PASSIVHAUS CERTIFIER: Detail Green
PASSIVHAUS CONSULTANT/ DESIGNER: Envirotecture
ARCHITECT/ BUILDING DESIGNER: Envirotecture
BUILDER: Jarrod Olsen & Co
STRUCTURAL ENGINEER: Cook + Roe
MECHANICAL ENGINEER: Envirotecture
WINDOW SUPPLIER: Logikhaus
HRV SUPPLIER: Fantech
AIRTIGHTNESS MEMBRANE SUPPLIER: pro clima
BLOWER DOOR TESTER: Blower Door Services
PHOTOGRAPHER: Envirotecture