Free home health assessment
Your home should support how you feel.
Everyday materials can quietly work against your health. Find out what’s in your home, room by room, and what to change first.
Free · No account · 5–8 minutes per room
Example · Bedroom
72
Caution
Physical
80
Chemical
65
Biological
70
2 areas to improve first
Why it matters
We spend most of our lives indoors.
The materials around us shape the air we breathe and how well we sleep. Most of us have never checked what’s in our home.
Materials keep releasing VOCs.
Synthetic paints, laminate flooring and MDF furniture release volatile organic compounds for years after installation, often with no smell after the first weeks and no warning on the label.
Labels don’t tell you what’s inside.
“Natural” and “low-VOC” on a tin say little about what the product contains. Independent certification says more.
Natural materials work differently.
Clay and lime plasters take up moisture when the air is damp and release it as the air dries, which helps keep indoor humidity in a healthy range. Building biology has studied these properties for decades.
How it works
How the assessment works
01
Pick a room.
Bedroom, nursery, kitchen or bathroom. Answer guided questions about materials, air, light, moisture and the devices you keep nearby. 5–8 minutes per room.
02
Get a score from 0 to 100.
Each room is scored on three pillars: physical, chemical and biological. The result is Nature-Aligned, Caution or Action Required, in plain language.
03
Know what to change first.
Changes are grouped by priority, each with the reason and natural alternatives, plus related guides to read next. Send the results to your inbox, or keep the private link and come back later.
Research foundation
Built on published research
Every score in the assessment rests on published studies and the Baubiologie SBM-2015 criteria. Three findings behind it:
Indoor VOC levels run 2–10 times higher than outdoors.
Monitoring across European homes finds this even in rural areas; synthetic paints, laminate, MDF and adhesives are the main sources.
Sarigiannis et al. (2011); Bernstein et al. (2008)
Better bedroom ventilation, better sleep.
When bedroom CO₂ fell from about 2,400 ppm to about 835 ppm, sleep efficiency and next-day performance improved.
Strøm-Tejsen et al. (2016)
Clay plaster buffers indoor humidity.
Over 8 hours, clay plaster lowered relative humidity by 27%, against 17–20% for concrete, lime plaster and gypsum board.
Pavlík et al. (2022)
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For developers
Planning a residential development? Nordnatur Tech tests architectural direction and buyer interest before the design is fixed.
Calm over urgency. No countdowns, no pressure.
Transparency first. If we can’t verify a claim, we don’t make it.
Small steps count. One room, one change, one informed decision.