An FLDL check is a flood information letter your lender orders to confirm whether your property sits in a flood zone

When you explore for a mortgage or refinance, your lender is required by federal law to check if your home is in a flood-prone area. An FLDL check — short for Flood information Letter — is the document that answers that question. A third-party company looks up your property address against the Federal Emergency Management Agency (FEMA) flood maps and sends back a letter saying whether flood insurance is required.

You do not order this yourself. Your lender orders it as part of the loan process, usually within the first week or two after you submit your process. The lender pays for it, not you. The letter typically arrives within three to five business days, though timing varies by the company your lender uses.

The reason lenders require this is straightforward: if your home is in a high-risk flood zone and you have a mortgage backed by a federal agency (which most mortgages are), you must carry flood insurance. Without the FLDL check, the lender cannot verify whether that requirement applies to you.

Key Takeaways

  • Your lender orders the FLDL check automatically; you do not need to request it or pay for it.
  • The letter tells you and your lender whether your property is in a FEMA flood zone and whether flood insurance is required.
  • If the letter says you are in a flood zone, you must purchase flood insurance before closing, even if you think the risk is low.
  • The FLDL check is based on FEMA maps, which can be outdated or disputed; you can request a map review if you believe the information is wrong.

What the FLDL letter actually says

The letter contains three main pieces of information. First, it states your property address and the legal description of the land. Second, it identifies which FEMA flood zone your property falls into — or states that it is outside all mapped flood zones. Third, it tells you whether flood insurance is mandatory under federal lending rules.

FEMA divides flood risk into zones labeled A, AE, X, and others. Zone A and AE mean high risk; Zone X (shaded) means moderate to low risk; unshaded X or no zone designation means minimal risk. The letter will spell out which zone applies to your address. If you are in A or AE, flood insurance is required. If you are in X or outside mapped zones, it is typically not required by law, though your lender may still recommend it.

The letter is not a legal document that changes your property status. It is a snapshot of what FEMA's maps show on the day the check is run. If FEMA updates its maps later, the letter does not automatically update.

Why the FLDL check might delay your closing

In most cases, the FLDL check arrives quickly and does not slow things down. But delays happen for a few reasons. If your property address does not match FEMA's records exactly — for example, if you use a rural route number but FEMA has a street address — the information company may need to contact your lender for clarification. This can add a few days.

A second common delay occurs when the property straddles a flood zone boundary. The information company may flag this as unclear and ask your lender to provide a survey or more precise coordinates. Your lender will then reach out to you for that information.

If your closing date is approaching and you have not received the FLDL letter, contact your lender's loan officer directly. They can check the status with the information company and sometimes push for expedited processing. Do not assume the letter is lost — most lenders track these documents closely because they cannot close without it.

What to do if you disagree with the flood zone information

If the FLDL letter says you are in a flood zone but you believe that is wrong — for instance, because your property is on a hill or because you have never experienced flooding — you have options. FEMA allows property owners to request a Letter of Map Amendment (LOMA) or a Letter of Map Revision (LOMR) to challenge the information.

A LOMA is used when you believe your property was incorrectly included in a flood zone due to an error on the map. A LOMR is used when physical changes to the land (like a levee or drainage project) have reduced flood risk since the map was made. Both require evidence: a survey showing your elevation relative to the flood level, or documentation of the physical change.

These requests go directly to FEMA, not to your lender. They can take weeks or months to process. If you want to pursue this, start the process before you explore for a mortgage, because it will delay your closing. If you are already in the loan process, ask your lender whether they will allow you to close without flood insurance while the LOMA or LOMR is pending — some will, some will not.

Flood insurance requirements after the FLDL check

If the letter says flood insurance is required, you must purchase a policy before your loan closes. Your lender will not fund the mortgage without proof of coverage. Flood insurance is separate from homeowners insurance and must be purchased through the National Flood Insurance Program (NFIP) or a private flood insurer.

The cost depends on your flood zone, the value of your home, and the deductible you choose. Policies typically run between $400 and $1,500 per year for homes in moderate-to-high-risk zones, though some can be much higher. Your lender will require you to maintain the policy for as long as you have the mortgage.

If the letter says flood insurance is not required, you are not legally obligated to buy it. However, if your property is in a moderate-risk zone (shaded X), some lenders recommend it anyway, and your homeowners insurance will not cover flood damage. The choice is yours, but understand the risk you are taking.

Common reasons the FLDL check comes back unclear

Sometimes the information company cannot give a clear yes or no. This usually happens when a property sits very close to a flood zone boundary, or when the address in your loan file does not match FEMA's records exactly. When this occurs, the letter may say "inconclusive" or "refer to local official."

If you receive an inconclusive information, your lender will typically ask you to contact your local floodplain administrator or city/county planning department. They can review the property in person and issue a local information. This adds time to the process, but it is the only way to get a definitive answer.

Another scenario: the FLDL letter may say you are outside the mapped flood zone, but your lender still requires flood insurance because of a mortgage investor's own rules. This is less common but does happen. If your lender tells you flood insurance is required even though the FLDL says it is not, ask them to explain which rule they are following — it will be in your loan documents.

How to prepare for the FLDL check

You do not need to do anything to trigger the FLDL check — your lender handles it. But you can speed things up by making sure your loan process has the correct property address from the start. Use the address exactly as it appears on the deed or property tax records, not a nickname or alternate version.

If your property is in a rural area or has an unusual address (a P.O. box, a rural route, or a long driveway), mention this to your lender upfront. They can flag it for the information company and reduce the chance of a mismatch that causes delays.

Keep a copy of the FLDL letter for your records once it arrives. You will need it for your insurance company, and it is useful documentation if you ever challenge the flood zone information later.

Frequently Asked Questions

Can I close on my mortgage without the FLDL letter?

No. Federal law requires lenders to obtain a flood information before closing. If the letter has not arrived, your closing will be delayed. Contact your lender when ready if you are within a week of your closing date and have not received it.

Do I have to buy flood insurance if the FLDL says I am in a flood zone?

Yes, if your lender requires it as a condition of the mortgage. You cannot close without proof of coverage. Flood insurance is mandatory for federally backed mortgages in high-risk flood zones.

What if the FLDL check says I am in a flood zone but my neighbors are not?

This is common near flood zone boundaries. FEMA maps divide properties based on elevation and proximity to water. You can request a LOMA if you believe the information is wrong, but you will need a survey or other evidence to support your case.

Can I get flood insurance after closing if I did not buy it before?

If flood insurance was required by your lender and you did not purchase it, your lender can force you to buy it and add the cost to your mortgage payment. If it was not required, you can purchase it anytime, but there is typically a 30-day waiting period before coverage begins.

How often do FEMA flood maps change?

FEMA updates flood maps periodically, but the timing varies by region. Some areas are remapped every few years; others go decades without updates. If your FLDL check is more than a year old, ask your lender whether a new check is needed before closing.