When you tour a home in Maryland, the seller’s disclosure form can feel like a built-in safety net. You assume that if something is genuinely wrong with the property, it has to show up somewhere on that page. Flood zone status is where that assumption starts to fall apart, and it catches buyers off guard more often than you’d expect.

Maryland’s disclosure law asks sellers just one basic question about flooding. Even honest, compliant answers may leave buyers without a clear picture of a property’s true risk. Understanding what that question covers, and what it leaves out, is the first step toward protecting yourself before you sign a contract on a house that could carry more risk than the paperwork suggests.

What Does Maryland’s Disclosure Form Ask About Flood Zones?

Maryland’s official disclosure form asks sellers a single yes-no-unknown question about whether the property sits in a flood zone, and nothing more.

Item 17 on the state’s Residential Property Disclosure and Disclaimer Statement is required under Real Property Article Section 10-702. It asks sellers to check a box indicating whether their home sits in a flood zone, a conservation area, a wetland area, or the Chesapeake Bay critical area. That’s the entire legal obligation, and a seller who checks “yes” has met it whether or not they’ve ever filed an insurance claim, whether their premium has doubled in five years, or whether they know a remapping effort is already underway in their county.

The One Flood Question on the State Disclosure Form

The checkbox tells you the property’s flood status as the seller understands it right now, at the moment they filled out the form. It says nothing about how that status was determined, how long ago, or how confident the seller is in their own answer.

What the Checkbox Doesn’t Require Sellers to Share

Maryland law doesn’t require a seller to disclose flood insurance costs, past claims, or any pending map changes that could reclassify the property after closing. If a seller genuinely doesn’t know their flood zone status, they can check “unknown” and move on. None of that missing information is illegal to withhold, because none of it was ever required in the first place.

What Does a FEMA Flood Zone Mean for Your Mortgage?

A property’s FEMA flood zone determines whether your lender legally requires you to carry flood insurance, but it doesn’t determine your actual flood risk.

When Flood Insurance Becomes Mandatory

Federal law requires flood insurance only when a federally regulated lender’s mortgage covers a structure sitting inside a mapped Special Flood Hazard Area, according to Montgomery County’s Department of Permitting Services. Step outside that mapped boundary, even by a few hundred feet, and insurance becomes optional rather than required, regardless of how the land drains during a storm.

Why Being Outside the Mapped Zone Isn’t the Same as Being Safe

This is where a lot of buyers pick up a false sense of security. The Maryland Insurance Administration notes that standard homeowners policies never cover flood damage, no matter where the property sits. Roughly a quarter of flood losses nationally happen to homes outside the officially mapped high-risk zones.

In Baltimore specifically, research from First Street Foundation, a nonprofit flood-risk research organization, estimates that about 15% of properties carry meaningful flood risk over a 30-year window. The organization says that share is significantly larger than what FEMA’s mapped zones alone would suggest. The map tells your lender what’s required, but it doesn’t reveal the full risk you face.

Picture two homes on the same street, one just inside the mapped Special Flood Hazard Area and one just outside it. The first buyer gets a flood insurance requirement built into closing, budgeted from day one. The second buyer gets no requirement at all, even though water doesn’t stop at a line drawn on a federal map. That second buyer often ends up paying out of pocket for unexpected flood damage, simply because no one explained that the zone line and the actual risk aren’t the same thing.

Can a Flood Zone Status Change After You Buy?

Yes, and in several Maryland counties, it’s happening right now. FEMA periodically updates its flood maps, and a property can move into or out of a Special Flood Hazard Area based on new data long after you’ve already closed.

Why Maryland Counties Are Actively Remapping Right Now

Howard County’s Department of Public Works confirms that FEMA remapping is an ongoing process, not a one-time event fixed to a house’s construction year. Montgomery, Baltimore, and Howard counties are all in active remapping cycles as flood modeling incorporates newer rainfall data, updated topography, and development patterns that didn’t exist when FEMA last drew the maps.

What Remapping Means for Your Insurance Bill Later

If FEMA remaps your home into a Special Flood Hazard Area after closing, your lender can require flood insurance you never budgeted for, sometimes with little warning. It also works in the opposite direction. A property that remaps out of a high-risk zone can drop a mandatory expense, which is worth knowing if you’re weighing two similar homes and one sits closer to a boundary that’s already under review.

How Do You Check a Property’s Real Flood Risk Before Making an Offer?

You can pull a property’s actual FEMA flood designation yourself in a few minutes, before you ever make an offer, rather than relying on the seller’s checkbox answer.

Pulling the FEMA Flood Map Yourself

Anne Arundel County’s own flood disclosure guidance recommends that buyers independently check the FEMA Flood Map Service Center rather than trusting the seller’s disclosure alone. Here’s what that process involves:

• Search the property address on FEMA’s Flood Map Service Center.
• The exact flood zone designation is what counts, not just a yes-or-no answer.
• Any active county remapping project could affect this exact parcel, so ask about it.
• Save screenshots of your results, since flood maps can shift before your closing date.

Questions Worth Asking Your Lender and Insurance Agent

A quick FEMA search answers part of the question. Your lender and insurance agent can fill in the rest. Ask your lender directly whether they would require flood insurance on this specific property, and ask an insurance agent for a real quote, not a rough estimate, even if the home sits outside the mapped zone.

It’s also worth asking the insurance agent whether the county has any pending remapping activity that could change that quote within the next year or two. A specific number changes the conversation far more than a general sense of the property’s risk, and it gives you something concrete to weigh against the rest of your offer.

Buying With Clarity, Not Assumptions

The single checkbox on Maryland’s disclosure form never gives you the full picture of a property’s flood risk, and now you know why. The narrow disclosure requirement, the gap between mandatory insurance and actual risk, and the active remapping underway in several counties all point to the same lesson. The honest answer to whether a house is safe from flooding takes more than one form to find.

I’d rather you have that answer before you’re emotionally attached to a house than after you’ve already made an offer. If you’re looking at a property anywhere in Howard, Baltimore, Harford, Montgomery, or Anne Arundel County, reach out to me directly for a personal flood risk review. Let’s talk through what its flood zone status means for your budget and your mortgage, look at the specific address together, and make sure you’re buying with clarity, not assumptions.