Health: When Buildings Make Us Sick — and How to Build for Wellness
According to the Australian government, Australians spend 90% or more of their time indoors. Health and wellbeing are crucial aspects of home design that are often overlooked. A good home design can actively support your health, while a bad one can make you sick.

When Buildings Make Us Sick
Sick Building Syndrome (SBS) is a condition where occupants experience acute health effects linked to time spent in a building. Symptoms include headaches, fatigue, respiratory issues and eye irritation. The causes range from poor ventilation and toxic building materials to mould and inadequate natural light.
Water Quality
The quality of your water supply directly impacts your health. Consider filtration systems, the source of your water and how it's stored. If you're collecting rainwater, ensure proper filtering and treatment.
Air Quality
Indoor air can be up to five times more polluted than outdoor air. Volatile Organic Compounds (VOCs) from paints, adhesives and furniture off-gas into your home. Proper ventilation, low-VOC materials and mechanical ventilation with heat recovery (MVHR) systems are essential.

Temperature and Light
Thermal comfort is fundamental to health. A cold home increases stress on your cardiovascular system. Natural light regulates your circadian rhythm, improves mood and boosts vitamin D production. Design your home to maximise natural light throughout the day.
Wellbeing
Beyond avoiding illness, a well-designed home actively promotes wellbeing — through spaces for movement and exercise, connection with nature (biophilic design), quiet zones for rest and reflection, and social spaces for connection with family and friends.
Your Health Priority
What is your key health priority for your home? Distil it down to a few dot points:
- "I want natural light to flood into my home"
- "I want excellent ventilation to avoid mould"
- "I want low-toxic building materials used throughout"
About the Author
Luke Davies
Luke is the founder of Davies Design & Construction and author of Dream Home. He writes about home design philosophy, lean construction, and building businesses that put people first.
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