Official sources for researching a property.
A sound real-estate decision relies on primary sources. This directory brings together national public agencies for checking housing data, financing, hazards, taxes and local rules.

Twelve dependable starting points.
These external links open in a new tab. Always confirm the date, geography and whether information applies to the actual parcel and property.
Census Bureau · data.census.gov
Official demographic, housing and income profiles for states, counties, cities and census tracts.
Open sourceConsumer Financial Protection Bureau
Mortgage education, Loan Estimate and Closing Disclosure guides, plus complaint resources.
Open sourceHUD housing counseling
Find HUD-approved housing counseling, homebuyer education and local assistance information.
Open sourceFEMA National Flood Hazard Layer
Look up official flood-map information for a specific address before making an offer.
Open sourceFEMA disaster declarations
Check federally declared disasters by state, county and incident type.
Open sourceEPA Envirofacts
Research environmental facilities and regulatory information near an address.
Open sourceEPA radon
Learn how to test for radon and locate state radon-program contacts.
Open sourceUSGS earthquake hazards
Check earthquake-hazard information and learn how local risk is assessed.
Open sourceNOAA climate data
Explore climate normals, weather records and climate data tools for local due diligence.
Open sourceIRS · home ownership
Federal tax information for homeowners, sellers, landlords and international transactions.
Open sourceUSA.gov · state governments
Official gateway to each state government, where licensing, tax and property rules can be verified.
Open sourceUSA.gov · local governments
Find official county and municipal websites, then locate the assessor, recorder, tax and planning offices for a property.
Open sourceResearch in layers.
Start with the place, continue with property-specific costs and hazards, then finish with documents and professionals in the relevant jurisdiction. A national source is a foundation—not a substitute for state, county or city authority.
- Locate the area and compare Census data.
- Review flood, climate, radon and surroundings.
- Confirm taxes, zoning and licenses locally.
- Request property-specific quotes and reports.