Empirical Data Protocols
How We Calculate Local Cost Bands and Climate Risk.
Full transparency into our mathematical modeling, government databases, trade licensing lookups, and physical measurement sources.
Government & Industry Sourcing Framework
In an industry saturated with generic online quote calculators that generate arbitrary numbers to capture personal data, 1800HomeUSA grounds every diagnostic metric, climate indicator, and price tier in verifiable public data sets:
NOAA Climate Normals
Sourced from official 1991–2020 Climate Normals published by the National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information (NCEI). Recorded at certified Automated Surface Observing System (ASOS) weather stations, measuring annual freeze days, heating/cooling degree days, and precipitation volumes.
US Bureau of Labor Statistics (BLS)
Occupational Employment and Wage Statistics (OEWS) datasets for Standard Occupational Classification (SOC) codes: SOC 47-2152 (Plumbers & Pipefitters), SOC 49-9021 (HVAC Mechanics), SOC 47-2111 (Electricians), and SOC 37-3012 (Pesticide Applicators). Calibrated across 25th, median 50th, and 75th percentiles.
RSMeans Regional Indices
RSMeans by Gordian City Cost Indexes (CCI) adjusting material, equipment, and labor rates across 730+ local market factors, ensuring that urban coastal repairs accurately reflect local supply chain costs compared to rural regions.
Statistical Labor & Equipment Calibration
Contractor retail billing rates are not simply raw hourly wages. A technician earning a median wage of $32/hr under BLS SOC 47-2111 represents an employer burdened labor cost including payroll taxes, state workers compensation insurance, specialized equipment amortizations (such as thermal imaging cameras and negative air scrubbers), and commercial vehicle operating expenses. Our models apply industry-standard burden multipliers (2.8x to 3.5x) to establish true retail contractor billing rates of $95 to $225 per hour across US metropolitan markets.
Methodology Frequently Asked Questions
How are local cost ranges calculated in your guides?
We model local pricing by combining Bureau of Labor Statistics (BLS) Occupational Employment and Wage Statistics (OEWS) trade wage data with RSMeans City Cost Indexes (CCI) for material and equipment overhead, reflecting true local market contractor billing rates.
What weather data sources do you use for regional risk indicators?
Our climate normal indicators are sourced directly from NOAA National Centers for Environmental Information (NCEI) 1991–2020 normals recorded at certified Automated Surface Observing System (ASOS) airport and municipal weather stations.
How often are datasets and regulatory requirements reviewed?
Our editorial and data research teams review trade licensing statutes, wage percentiles, and building code adoptions (such as NEC and DOE SEER2 revisions) semi-annually.
Can contractors influence the cost estimates published on 1800HomeUSA?
No. All cost models and data benchmarks are calculated independently using government and industry statistical sources. Advertisers cannot purchase or alter pricing benchmarks.