Open Data · CC-BY-4.0
Citable home-safety reference data
Clean, sourced reference tables compiled from EPA, CDC, USGS, and state regulatory data. Free to cite and reuse under CC-BY-4.0 with attribution to HomeAllClear.
Radon Action Levels and Lung-Cancer Risk Reference (U.S.)
Reference table of regulatory radon action levels and the EPA’s modeled lifetime lung-cancer risk per 1,000 people at each concentration, in picocuries per liter (pCi/L). Use it to interpret a radon test result.
View the dataset →Mold Growth Timeline and Remediation Thresholds
Reference figures for how quickly mold colonizes wet materials, the do-it-yourself versus professional area threshold, and the moisture conditions that drive growth. Sourced from CDC, EPA, and IICRC S520 guidance.
View the dataset →Lead Paint and Asbestos Likelihood by Home Construction Era
Reference table of the likelihood that a U.S. home contains lead-based paint and asbestos materials, by the era it was built, plus the federal rules that govern disturbing them. Use it to scope a pre-renovation inspection.
View the dataset →Private Well Water Testing Reference (Contaminants, Limits, Frequency)
Reference table of the contaminants the CDC recommends testing private wells for, the EPA maximum contaminant levels (MCLs) used as health benchmarks, and the recommended testing frequency. ~43 million U.S. homes rely on unregulated private wells.
View the dataset →Foundation Repair Cost and Crack Warning-Sign Reference
Reference table mapping foundation crack types and warning signs to their typical structural severity, with associated repair-method cost ranges. Use it to triage whether a crack is cosmetic or warrants a structural engineer.
View the dataset →