Buying · November 8, 2026
Flood zones: what to check before you make an offer
On the Gulf Coast, the flood zone and elevation of a house can change its monthly cost more than the interest rate. Five things to look up before you write an offer.
Almost every home search between St. Petersburg and Fort Myers runs into the flood question sooner or later. It is easier to deal with before you have fallen for a house.
1. Look up the FEMA flood zone
Enter the address at FEMA’s Flood Map Service Center (msc.fema.gov). Zones that begin with A or V are special flood hazard areas, where FEMA estimates at least a 1% chance of flooding in any year. Zone X is lower risk, though not zero. County property appraiser sites usually show the zone too.
2. Find out if insurance will be required
If the home is in a special flood hazard area and you are using a federally backed mortgage, the lender will require flood insurance. Standard homeowners policies do not cover flood damage, wherever the house is.
3. Get a quote on the actual address
Flood premiums are priced house by house. Elevation, distance to water, foundation type, and the year built all matter, so two homes on the same street can differ widely. Ask the seller for an elevation certificate if one exists, and get quotes from both the National Flood Insurance Program and private insurers before your inspection period ends.
4. Read the seller’s flood disclosure
Florida law now requires sellers of residential property to give buyers a flood disclosure at or before signing the contract. It covers whether the seller has filed flood insurance claims on the property or received federal flood assistance. Read it and ask follow-up questions.
5. If you plan to renovate, learn the 50% rule
In a special flood hazard area, if improvements or repairs cost 50% or more of the building’s market value, the whole structure generally has to be brought up to current flood code, which can mean elevating it. Each city and county applies the rule a little differently, and some add up projects over several years. Call the local building department before you buy a fixer-upper near the water.
Where we come in
We check the zone, ask for the elevation certificate, and introduce you to insurance agents who quote both NFIP and private flood coverage, so the number is in your budget before you commit. Insurance agents and building officials have the final word on premiums and code requirements.
This article is general information, not legal, tax, lending, insurance, or investment advice, and it may not reflect changes made after the date above. Check the specifics of any property with the right professional before you rely on them.