The Healthy Home Quiz
How does your home do on air, water, light, sound, materials and nature? Answer 21 questions and get your score, plus what to try next, in order of impact.
Start the QuizYour action plan
This week · under $500
This quarter · the upgrades
Build level · design it in
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Every question maps to published evidence.
Each pillar in the quiz is anchored to peer-reviewed research and international health standards: the same evidence we design Luxewell homes against.
Light
Consensus recommendations from 18 sleep, circadian and lighting scientists: bright days (melanopic EDI >250 lux), dim evenings (no more than 10 lux melanopic EDI in the 3 hours before bed), and true darkness for sleep (no more than 1 lux melanopic EDI).
Brown et al., PLOS Biology (2022)Air
Harvard's COGfx study followed 302 office workers in six countries for a year. Each 315 ppm rise in carbon dioxide at their desks went with response times 0.85% and 1.13% slower on two short tests, and higher fine particles (PM2.5) went with slightly slower, less accurate answers, mainly at or above 12 µg/m³. It shows a link, not a cause, and ventilation and filtration are how homes lower both.
Harvard T.H. Chan School of Public Health, The COGfx StudySound
The World Health Organization's bedroom guideline is 30 dB LAeq across the eight-hour night, with individual events held under 45 dB LAmax. WHO set those two numbers at the lowest levels it linked to sleep disturbance. Better glazing, solid-core doors and isolated mechanicals are the usual ways to lower indoor noise.
WHO, Guidelines for Community Noise (1999), Table 4.1Materials & Plumbing
A five-year study in an occupied building measured unregulated VOCs migrating from PEX-a pipe into drinking water. Migration ran highest in the first months after installation, then fell off sharply and ceased after roughly two years. That opening stretch is the one worth knowing about in a new build, which is why we ask what your pipes are made of. Copper on potable lines is our own design preference, not a finding of this study.
Pelto-Huikko et al., Satakunta University of Applied Sciences; five-year PEX-a migration study (2021)Resale Value
The evidence that a healthier home sells for more is thin. The Global Wellness Institute puts the premium at 10 to 25 percent, from its own analysis of five developments. A measured penalty is better evidenced than a promised premium: when England updated its radon maps, newly flagged homes sold for 0.86% less, and cleared homes showed no measurable gain.
Pinchbeck et al., Journal of the Association of Environmental and Resource Economists (2023); Global Wellness Institute, Build Well to Live Well: The Future (2025), endnote 30