Empirical Data Protocols
How We Calculate Local Cost Bands and Climate Risk.
Full transparency on our statistical modeling, government databases, and physical measurement sources.
Government & Industry Data Sources
Every diagnostic metric, climate indicator, and price tier published on 1800HomeUSA is grounded in verifiable external data sets:
- NOAA National Centers for Environmental Information (NCEI): Sourced from official 1991–2020 Climate Normals recorded at automated surface observing system (ASOS) weather stations across US airports and municipal observatories.
- US Bureau of Labor Statistics (BLS): Occupational Employment and Wage Statistics (OEWS) for Standard Occupational Classification (SOC) codes: SOC 47-2152 (Plumbers/Pipefitters), SOC 49-9021 (HVAC Mechanics), and SOC 47-2111 (Electricians).
- RSMeans by Gordian: Regional City Cost Indexes (CCI) calibrating material, equipment, and union/open-shop labor factors across 730+ US location factors.
- Statutory Licensing Boards: Official state contractor registries (e.g. Florida DBPR, California CSLB, Texas TDLR, Ohio ODA) cross-referenced for mandatory credential verification.