Heathmont House 2019

Heathmont House
Heathmont VIC 3135
Booking required – see link below
10am – 4pm
House Open Style
Guided Tours – Booking essential (address will not be listed on website)
Entry fee or Donation
Tickets for pre-booked tours
Donations supporting
Summer Housing (Disability Housing) www.summerhousing.org.au
Housing Type
Standalone House
Project Type
New Build
Maxa Design
Carbonlite (to lock-up, then owner builder).
House Size
House 293m2, bedsit 36m2
Number of bedrooms
Number of bathrooms

Sorry – Tickets are completely Sold Out for Heathmont House 

This Melbourne home pushes the boundaries of Passive House design, employing prefab panel construction to help break away from the typical boxy form to capture views and sunlight on a tricky site.

The house is aligned with the sloping site’s contours for a more cost-efficient solution. Angling the house also provides views of the Dandenongs and brings northern light into the kitchen, dining and living area, and the lounge at the front of the house. The outdoor entertaining area is oriented to the north where the deck and landscaping – with native plantings, reticulated billabong and trickling stream – are visible to passers-by through the timber-post fence.

All living areas and the main bedroom suite and study are at street level for long-term useability into the homeowners’ retirement years, and stairs provide access to the lower level where there are two bedrooms for visitors, including interstate family. A glazed bridge that crosses the stream leads to a self-contained studio which also has its own separate entry and a private patio; this is intended for longer-term visitors, tenants or even a carer in the future if it ever becomes necessary.

The architecture of the finished home is distinctive. Four triangular sections peel up from the roof, creating lofty vaulted ceilings inside and featuring highlight windows for north-east sun and to purge summer heat. The angular ‘extrusions’ continue along the south-east wall, with a sawtooth profile housing windows to frame the outlook. Melbourne-based Carbonlite built the house using its Panellite prefabricated panel construction system for walls, floor and roof, a Passive House-certified product. This simplified the design process and certification of the home.

It is an all-electric home. Heating and cooling is via a 3kW split system integrated into the heat recovery ventilation system, which greatly reduces the size of the system required for a house of this size, and ensures even distribution. It was something of a trial system at the time, and the system designer emphasises that integrated air conditioning units like this are really only suitable for Passive Houses due to their very low heating and cooling requirements.

In fact, the heating and cooling demands of the house (respectively 12kWh/m2a and 11kWh/m2a: kilowatt-hours per square metre of floor area, per year) more than meet Passive House requirements.

Designer: Maxa Design
Passive House Consultant: Williams Energy Design UK
Passive House Certifier: Grun Consulting
Builder: Carbonlite
Photographer: Chris Neylon


This house achieved a NatHERS rating of 7 stars using NatHERS accredited software (FirstRate5). Find out how the star ratings work on the Nationwide House Energy Rating Scheme (NatHERS) website.


Years Open
Total cost of home when constructed
$1.6m including landscaping
Universal design accessability
Adaptive design
Universal access
Universal Design Features
Hobless showers
Shower head on rail for various heights
Slip resistant flooring
BAL Rating
Roofing materials
Insulated panel (sandwich panels)
Metal (Colorbond)
Wall materials (external and internal)
Structural insulated panels (SIP's)
Carbonlite Panellite panels
Window and door types
Clerestory windows
Sliding windows/doors
Triple glazing
Neuffer Eco Plano Passive House certified triple glazed
Window and door shading
Adjustable Shading
Awnings (external)
Insulation - Under roof
Type: Insulated panels
Rating: R5.5
Insulation - Ceiling
Type: Bulk – glass wool
Insulation - External walls
Type: Bradford Gold Batts
Rating: R4.3
Insulation - Internal walls
Type: Bulk – glass wool
Rating: R2.5
Insulation - Under floor
Type: Kingspan Kooltherm K3 insulation board
Rating: R5.0
Healthy home
Airtight house design
Cross flow ventilation
Heat recovery ventilation (HRV)
Low VOC paints/sealer/varnish
Natural light and ventilation
Cabinets: Nikpol Super E0 melamine faced chipboard & Ecolour EcoLiving interior paints
All electric home
Renewable energy
Solar PV grid connect
Size of PV system
Water heating
Hot water heat pump
Sanden Eco Plus CO2 heat pump
Passive heating cooling
Cross ventilation
Passive solar designed home
Air-tight construction - Certified Passive House.
Active heating cooling
Heat exchange ventilation system
Split system airconditioner
Zehnder Q450 heat recovery ventilation system with 3kW Daikin reverse-cycle air conditioner
Energy efficiency
Draught proofing
Efficient lighting
Efficient appliances
Water harvesting and saving
Above ground rainwater storage
Type: Corrugated steel water tanks
Size: 13,500L
Low flow shower heads
Low flow taps
Garden / Outdoors
Native plants
Water wise plants