Checking whether a Central Iowa home sits in a flood zone takes about two minutes, and it is one of the few due-diligence steps that can change your monthly payment by hundreds of dollars before you ever write an offer. It also happens to matter more this week than it has in a year: the National Flood Insurance Program's authority to write policies is currently set to expire at 11:59 p.m. on September 30, 2026.
Here is the straightforward version of what that means, how to check a specific address, and what to do if you are under contract right now.
Two free tools answer the question:
In Central Iowa, the properties worth checking early cluster along the Des Moines and Raccoon rivers, Beaver Creek through Johnston and Grimes, Fourmile and Ioway creeks, and the Skunk River corridor near Ames. Plenty of homes near water are in Zone X. Plenty of homes nowhere near a river turn up in Zone AE because of a small tributary or a drainage way. The map is the only way to know.
If a home is in a Special Flood Hazard Area and you are using a federally backed or federally regulated loan - which is nearly every loan - your lender is required to make you carry flood insurance. It is not optional, and it is not a coverage you can shop away by choosing a different homeowners carrier. Standard homeowners policies exclude flood damage entirely, in or out of a mapped zone.
That premium becomes part of your escrow, which means it is part of your qualifying ratio. A buyer who is approved at the top of a range and then discovers a flood premium in week three of a contract is a buyer whose approval just moved. Check the zone before you get emotionally attached, not after.
The NFIP has to be reauthorized by Congress, and its current authority ends at midnight on September 30, 2026. The National Association of REALTORS® expects an extension to ride along with the appropriations bills funding the 2027 fiscal year, and is pushing for the longest extension available. That is the likely outcome. It is not a certainty - the program lapsed for 43 days starting October 1, 2025.
If a lapse does happen, here is what is true, because the difference between the rumor and the reality is worth real money:
What this means for your strategy: if you are under contract on a Central Iowa home in a mapped flood zone right now, ask two questions today - does the seller have an existing NFIP policy that can be assigned, and what is my lender's position if the program lapses. Those two answers determine whether an October closing moves or waits.
The Iowa Seller Disclosure of Property Condition, which a seller must deliver before you make a written offer, asks about this twice on purpose. One line asks about any known settling, flooding, drainage, or grading problems. A separate line asks directly whether the property is located in a flood plain, and if so, what the designation is.
Iowa Code Chapter 558A also requires disclosure of flood damage the seller knows about. "Unknown" is an allowed answer, and it is a common one - many sellers have genuinely never looked. Treat the disclosure as a starting point and the FEMA map as the record. If either raises a question, that is a conversation for your inspector and your insurance agent, not a box to check and move past. Our Iowa home inspection walkthrough covers where water problems tend to show up in an older Central Iowa basement.
This is the part most buyers never hear. FEMA's maps are drawn at scale, and a home sitting on natural high ground can get swept into a Special Flood Hazard Area simply because the surrounding parcel is low. The fix is a Letter of Map Amendment, or LOMA.
How it works: you hire a licensed land surveyor or professional engineer to prepare an Elevation Certificate showing the lowest grade adjacent to the structure sits above the base flood elevation. You submit it to FEMA. FEMA charges no fee to review a LOMA - your cost is the survey. If FEMA grants it, the determination officially amends the map for that structure, and you can send it to your lender and ask that the mandatory flood insurance requirement be removed.
Worth knowing the distinction: an Elevation Certificate on its own documents your building's elevation for insurance pricing. It does not change your zone. Only the LOMA does that. On a borderline property, a few hundred dollars of survey work can retire a premium permanently - which is exactly the kind of thing worth checking before you decide a home is out of reach.
None of this makes a flood-zone home a bad buy. Some of the best-located property in Central Iowa is near water, and a known, quantified premium is just another line in the math. What sinks deals is finding out in week three. If you want to run the full picture on a specific address - payment, escrow, and whether the numbers still work - the Deal Calculator will get you there, and I am glad to pull the flood map on any property you are considering. Just reach out and send me the address.
Jackson Krile | Flanders Team | RE/MAX Real Estate Center
515.490.8614 · Jackson@FlandersTeam.com
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