Frequently Asked Questions
Common questions about FloodMaps flood risk reports, pricing, data sources, and coverage for Houston properties.
Where does FloodMaps actually get its data?
FloodMaps pulls directly from authoritative government sources including FEMA’s National Flood Hazard Layer, USGS 3DEP LiDAR elevation data, Harris County Flood Control District bayou and channel records, HCAD property records, and live Houston 311 flood reports. Our AI then synthesizes these 6+ data layers into a property-specific risk assessment — no guesswork.
How much does a FloodMaps report cost?
A single Premium Report costs $29. For professionals comparing multiple properties, the Unlimited Reports plan is $59 for 90 days of access. Every report includes AI analysis, Hurricane Harvey damage data, flood depth modeling, LiDAR elevation, subsidence tracking, and a downloadable PDF — over 13 data layers total.
Is the basic flood zone lookup really free?
Yes, completely free with no credit card required. Search any Houston address to instantly see its official FEMA flood zone designation, ground elevation, and neighborhood elevation profile. The free tier covers essential risk data. Premium Reports at $29 unlock 10+ additional layers including AI analysis, Harvey damage records, and flood depth modeling.
Can I get a refund if my property isn’t in a flood zone?
Yes, we offer refunds on a case-by-case basis. However, properties outside high-risk FEMA zones still face real flood risk — over 25% of all National Flood Insurance Program claims come from moderate- and low-risk zones. A Premium Report shows your actual risk using elevation, drainage, subsidence, and historical data beyond the zone label.
How current is the FEMA flood map data you use?
FloodMaps uses the latest effective FEMA National Flood Hazard Layer, which updates as FEMA issues revised Flood Insurance Rate Maps. We also show FEMA’s draft proposed zone changes before they take effect, so you can see upcoming reclassifications. Our Houston 311 flood feed and HCFCD flood gauge data refresh in near-real-time.
How is FloodMaps different from just checking the FEMA website myself?
FEMA’s website shows you a zone designation — a broad boundary drawn over large areas. FloodMaps goes deeper by layering FEMA data with high-resolution LiDAR elevation, Hurricane Harvey damage records, ground subsidence monitoring, flood gauge history, and AI-powered analysis. The result is a property-specific risk picture across 13+ data layers, not just a zone label.
Does FloodMaps cover areas outside of Houston?
Not yet. FloodMaps currently focuses exclusively on the Greater Houston metro area, covering Harris, Fort Bend, Montgomery, Galveston, and Brazoria counties. Houston’s unique combination of flat coastal terrain, bayou drainage networks, and rapid development makes it our priority market. We plan to expand to additional flood-prone U.S. metros in the future.
Check your flood risk
Search any Houston address for a free flood analysis report