How do I check if a property sits in a flood zone before buying?

FEMA's flood map tool is the standard first check, and it is searchable by address or parcel, showing the flood zone designation currently mapped for a given location.

Flood zones are labeled with different letters, and generally speaking these indicate different levels of flood risk and different insurance and construction requirements tied to that risk level. Rather than memorizing specific letter codes, focus on what the map is telling you about relative risk and what it means practically. Higher-risk zones typically mean higher flood insurance costs and more restrictive building requirements, if building is part of your plan.

Being in a flood zone does not necessarily mean a parcel is unusable or a bad buy. Plenty of land within mapped flood zones is bought, held, and even built on. What it does mean is that it affects two things worth budgeting for: insurance cost, if you plan to build or insure a structure, and construction rules, since some zones require specific foundation or elevation requirements.

One detail worth checking: flood maps get updated periodically, so note the effective date of the map you are looking at. A parcel's designation can change over time as FEMA reassesses an area, so a map that is several years old may not reflect the most current designation.