Flood Zone Property Owner Leads & FEMA Flood Map Lookup

Every county in Arkansas, Connecticut, Florida, Massachusetts, Minnesota, Montana, New Jersey, New York, North Carolina and Wisconsin (New York and Minnesota publish a statewide roll for the counties that opt in; run with no areas to get the exact list for free), plus Maricopa AZ, Alameda and Sacramento CA, Denver CO, Fulton GA, Marion IN, Oakland and Wayne MI, Cuyahoga, Franklin and Hamilton OH, Philadelphia PA, Davidson TN and Salt Lake UT. Lookup mode works for any US address FEMA has a digital map for; it adds the owner where the county is in that list.

The zone, base flood elevation, panel, LOMA and map changes come from FEMA's National Flood Hazard Layer and its pending and preliminary map services; the CRS class and initial FIRM date from FEMA's NFIP Community Status Book (OpenFEMA). The owner, mailing address, value and year built come from the state or county assessor roll for the parcel. Each property is placed in its zone by the parcel's own centroid.

FEMA publishes new maps first as preliminary maps, then as pending maps once a community adopts them, with the date they take effect. 'Entering' returns properties outside the SFHA on today's map and inside it on the new one, with the pending map's effective date. On a pending map that date is when a federally backed mortgage starts to require flood insurance. In November 2026 FEMA's pending maps covered about 100 map areas and its preliminary maps about 400, so many counties have none; a county without one returns no rows for this filter.

No. No public flood map or assessor roll carries an owner's phone or email; the owner's name and mailing address are what is published.

It is FEMA's zone at the parcel's centroid (or, in lookup mode, at the point the Census geocoder gives the address). A large or oddly shaped parcel can lie in more than one zone, and the zone at its centre may not be the one under the building. It is not an official flood zone determination; a lender's determination or an elevation certificate is.

In an export every unit on the roll is its own row with its own owner. In lookup mode, an address that is a building with several units returns the owner only when the address includes the unit number ('1695 Pinellas Bayway S Unit A-5'); without one the flood columns are filled and the owner is left empty rather than guessed.

Measured on 2026-11-03: 1,000 flood-zone owner rows from New Hanover County, NC in 39 seconds, and 100 out-of-state owners in Pinellas County, FL in 66 seconds. A whole county's flood zone can be tens of thousands of properties, so set 'Maximum rows per area' to what you want to pay for, or narrow with ZIP codes. A county whose whole map is changing (Miami-Dade's pending map takes effect 2027-02-19) has much more FEMA map data to read and can take most of an hour.

$0.01 per exported property row with an owner, and $0.004 per address answered in lookup mode. Coverage, no-match, no-digital-map and error rows are free.