Sources and citations
Every source used by the public cost records and every verified index series in one place.
Baseline source registry
| Source | Geography | Retrieved | Limitation |
|---|---|---|---|
| U.S. Department of Energy: National Residential Efficiency Measures Database | United States | 2026-08-14 | Efficiency-measure costs are national reference inputs and do not represent contractor quotes. |
| U.S. Department of Energy: Energy Saver homeowner guidance | United States | 2026-08-31 | Defines residential efficiency measures and assessment scope; exact installed costs remain disclosed HomeCostTotals model assumptions. |
| National Renewable Energy Laboratory: residential solar and storage cost benchmarks | United States | 2026-08-31 | Benchmark system costs are planning references and do not include every site, utility, financing, incentive, or contractor condition. |
| U.S. Environmental Protection Agency: indoor air quality, radon, mold, and asbestos guidance | United States | 2026-08-31 | Health and safety guidance defines responsible project scope; it is not a contractor price survey or a substitute for qualified testing. |
| U.S. Department of Housing and Urban Development: Aging at Home home-modification guide | United States | 2026-08-31 | Identifies accessibility and safety modification scope; exact installed costs remain disclosed HomeCostTotals model assumptions. |
| U.S. Bureau of Labor Statistics: May 2025 OEWS | United States | 2026-08-14 | Employee wages exclude contractor overhead, benefits, profit, and project-specific scarcity. |
| U.S. Census Bureau: Value of Construction Put in Place | United States | 2026-08-14 | Broad construction spending is used only as a direction and plausibility check. |
| BLS: Net Inputs to Construction Industries, Goods | United States | 2026-08-15 | Tracks construction-industry goods-input direction, not a retail project price. |
| BLS: Lumber and construction materials merchant wholesalers PPI | United States | 2026-08-14 | Tracks wholesale material prices and does not include installation. |
| Harvard Joint Center for Housing Studies: Remodeling Futures | United States | 2026-08-14 | Market-level remodeling research is used for corroboration, not line-item pricing. |
| HomeCostTotals default-scenario convention v1 | United States | 2026-08-15 | A user-editable starting scenario, not a market statistic. |
| HomeCostTotals locked legacy baseline record v1 | United States | 2026-08-15 | Records the base-period number used by the model. Supporting public sources establish context and trend direction but do not publish the exact line-item value. |
| HomeCostTotals planning-range convention v1 | United States | 2026-08-15 | A disclosed planning-spread assumption, not a survey percentile or contractor quote distribution. |
Verified series
PCU423300423300: PPI industry data for Lumber and other construction materials merchant wholesalers, not seasonally adjusted; latest 2026-07-01, delta 9.25%.
CES2000000003: Average hourly earnings of all employees, construction, seasonally adjusted; latest 2026-07-01, delta 2.29%.
WPUIP2300001: PPI Commodity data for Inputs to construction industries, goods, not seasonally adjusted; latest 2026-07-01, delta 6.78%.
Private raw archive
Raw responses are not public downloads. They are retained privately and available on request; use the published SHA-256 record to verify a supplied file.