Where the numbers come from
Source families, expected refresh intervals and the dates to check.
Guide updated · Source dates are shown in the app
Say two numbers on a page have different source dates. They may come from different releases. Use the date beside the number, not the date this guide was published.
Public listing histories
Expected interval: about 1 day. This is a schedule, not proof that a refresh succeeded.
Public for-sale listings
Expected interval: about 1 day. This is a schedule, not proof that a refresh succeeded.
Home-value index
Expected interval: about 30 days. This is a schedule, not proof that a refresh succeeded.
Rent index
Expected interval: about 30 days. This is a schedule, not proof that a refresh succeeded.
Census ACS 5-year demand & supply
Expected interval: about 365 days. This is a schedule, not proof that a refresh succeeded. Published geography and period: ZCTA / county. Official source.
Home-value, rent and household-income history
Expected interval: about 30 days. This is a schedule, not proof that a refresh succeeded.
Calculated from the home and area inputs
Expected interval: about 30 days. This is a schedule, not proof that a refresh succeeded.
HUD Fair Market Rents
Expected interval: about 365 days. This is a schedule, not proof that a refresh succeeded. Published geography and period: ZIP x fiscal year. Official source.
Supported rental evidence and HUD rent benchmarks
Expected interval: about 1 day. This is a schedule, not proof that a refresh succeeded.
Modeled ownership assumptions
No fixed refresh interval; check the source date shown in the app.
Census ACS effective property-tax rate
Expected interval: about 365 days. This is a schedule, not proof that a refresh succeeded. Published geography and period: ZCTA / county. Official source.
Treasury FIO / NAIC homeowners premiums
No fixed refresh interval; check the source date shown in the app. Published geography and period: ZIP x year (2018-2022). Official source.
Census PEP county components of change
Expected interval: about 365 days. This is a schedule, not proof that a refresh succeeded. Published geography and period: county x year. Official source.
IRS SOI county-to-county migration
Expected interval: about 365 days. This is a schedule, not proof that a refresh succeeded. Published geography and period: county-from-county x year. Official source.
BLS county employment (QCEW + LAUS)
Expected interval: about 91 days. This is a schedule, not proof that a refresh succeeded. Published geography and period: county x period. Official source.
Census Building Permits Survey
Expected interval: about 30 days. This is a schedule, not proof that a refresh succeeded. Published geography and period: county / place x period. Official source.
FEMA National Risk Index
Expected interval: about 365 days. This is a schedule, not proof that a refresh succeeded. Published geography and period: census tract. Official source.
FEMA NFIP flood claims
Expected interval: about 30 days. This is a schedule, not proof that a refresh succeeded. Published geography and period: ZIP x loss year. Official source.
Short-term-rental estimates
Expected interval: about 7 days. This is a schedule, not proof that a refresh succeeded.
How to read freshness. Listing, home-value, rent-index and short-term-rental provider names are described in general words while source terms are reviewed.