Thornleigh Passive House 2019

Thornleigh Passive House
Thornleigh NSW 2120
10am – 4pm
House Open Style
Regular Guided Tours – No booking required
Housing Type
Standalone House
Project Type
New Build
Red Cedar Constructions
House Size
Number of bedrooms
Number of bathrooms
Open with support of
Australian Passive House Association

Sydney’s first Certified Passive House home, designed for a family with two school-aged children.

The main living area is open to the backyard via a sliding door and three bedrooms upstairs. Construction started in February 2019, and it is only recently finished. As it is a newly built premises we are yet to determine the actual running costs and footprint.
There will be a blower door test at 10am and 11am for those who wish to witness one.

See detailed analysis for costs involved in building a Passive Haus home – Whats it worth?

Designed by Envirotecture and built by Red Cedar Constructions

There is no parking available at the house or on the street in front of the house. There is ample parking near / at the Thornleigh Train Station which is a few hundred metres away.


Years Open
Cost estimate of sustainable home/features
minus $22,000 compared to passive solar.
Total cost of home when constructed
Estimate of annual savings
Universal Design Features
80cm minimum door opening width
Hobless showers
Lever handles for doors (no knobs)
BAL Rating
Roofing materials
Insulated panel (sandwich panels)
Metal (Colorbond)
Wall materials (external and internal)
Lightweight construction (timber frame)
Exterior wall is OSB board with membrane, 50mm PIR panel & fibrecement board.
Window and door types
Clerestory windows
Triple glazing
uPVC triple glazed with an aluminium external skin; air tight, imported from Europe
Window and door shading
Awnings (external)
Shade Sails
Sustainable materials
No steel structure. Timber structure used No concrete at all (screw piles for footings)
Insulation - Under roof
Type: Insulated panels
Rating: R4.95 (total roof) PIR
Insulation - External walls
Type: 50mm polyisocanurate thermal insulation board
Rating: R2.75 (total wall)
Insulation - Internal walls
Type: Bulk – polyester
Rating: R2.0 SoundSolution
Insulation - Under floor
Type: Bulk - polyester
Rating: R2.0 Greenstuf
Healthy home
Airtight house design
Cross flow ventilation
Heat recovery ventilation (HRV)
Low VOC paints/sealer/varnish
Natural light and ventilation
No carpets
All electric home
Renewable energy
Solar PV grid connect
Size of PV system
Water heating
Hot water heat pump
Passive heating cooling
Cross ventilation
Passive solar designed home
Thermal mass
Active heating cooling
Ceiling fans
Heat exchange ventilation system
Split system airconditioner
Energy efficiency
Draught proofing
Efficient lighting
Efficient appliances
Energy monitoring
Water harvesting and saving
Above ground rainwater storage
Type: Steel (Aquaplate)
Size: 17,500L
Low flow shower heads
Low flow taps
Drip irrigation
Garden / Outdoors
Drip irrigation
Edible garden
Native plants
Average Daily Energy Consumption Per Person
Average Daily Water Usage Per Person
not known yet
Waste Reduction
Compost all food scraps
Swap with friends and neighbours