THRESH — Know Before You Cross

Your home is trying to tell you something.

THRESH cross-references your address with environmental hazard data — radon zones, flood risk, air quality, Superfund proximity — to give you a free environmental risk score. Your biology comes next.

Score my address →
28/100

JP's retroactive THRESH score for 4526 W 46th Ave, Denver.
His house made him sick for four years. This would have told him in 2021.

// free environmental score

What does your address look like?

Enter any US address. We cross-reference EPA radon zones, FEMA flood maps, air quality data, and Superfund proximity — all public data, scored for your location in seconds.

-- THRESH

Address scored

⚠️ THRESH provides environmental risk education based on publicly available health research. This is not medical advice, diagnosis, or treatment. Consult a qualified healthcare provider for medical decisions.

This is just the environmental layer. Your genetics, health history, and inspection report can change this score dramatically.

Get full analysis →

// the genetic layer is coming

Three PDFs. Zero cross-reference.

A home inspection tells you about the house. A genome report tells you about you. Nobody connects them. THRESH does.

"An inspector flagged moisture intrusion — a $5K negotiation point. For someone with impaired detox enzymes, amplified inflammation, and mold-susceptible genetics, that moisture intrusion was a $50K health liability. Same house. Different biology. Completely different risk."

— THRESH SPEC · Swivel Labs · 2026

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// what comes next

The full picture

v2 · Premium

Genetic cross-reference

Upload your 23andMe or Ancestry file. THRESH identifies which hazards are amplified by your specific SNP variants. GSTP1, IL-6, MTHFR — the variants that change everything.

v2 · Standard

Inspection PDF analysis

Upload your home inspection report. THRESH reads it, extracts hazard findings, and cross-references with your health profile. The report your inspector couldn't write.

v3 · Visualization

3D home walkthrough

Walk through a 3D model of your home with risk overlays by room. Watch the basement go from red to green after radon mitigation. The dopamine hit of a healthy home.