Your property policy almost certainly excludes flood. The usual answer is a federal policy through the National Flood Insurance Program (NFIP), and for a lot of businesses that's a good start. But it was built with limits and rules that leave real holes for a commercial operation, and most owners don't learn where they are until the water is already inside.
Here's what the NFIP does for a business, what it won't do, and how the gaps get filled.
What the NFIP actually gives a business
Commercial buildings are written on the NFIP's General Property Form. For a non-residential building, that means:
- Up to $500,000 on the building and up to $500,000 on contents, bought separately, each with its own deductible.
- Actual cash value. The form pays the least of your limit, the actual cash value, or the cost to repair or replace. Actual cash value is replacement cost minus physical depreciation, so a 15-year-old roof, HVAC system, or kitchen line is paid at what it's worth today, not what it costs to replace.
- Increased Cost of Compliance of up to $30,000 to help bring a substantially damaged building up to local floodplain rules. It isn't extra money on top of the law's building maximum: the building and compliance payments together can't exceed it.
For a retail space or small office, $500,000 may cover the building. For a restaurant with a full build-out, an apartment building, or a warehouse full of inventory, it often doesn't come close.
The gotcha: no lost income
This is the trap. The NFIP pays only for direct physical loss by flood, and the policy spells out what that leaves out: loss of use, loss from interruption of business or production, and any other economic loss.
So picture a flooded restaurant that's closed for four months. The NFIP may help pay to replace the drywall, flooring, and equipment. It pays nothing toward the revenue you didn't earn, the payroll you kept paying to hold onto your staff, the rent, or the loan payments.
Most owners assume their business income coverage picks that up. It usually doesn't. A standard business income form pays only when the shutdown comes from physical damage by a covered cause of loss, and standard commercial property forms exclude flood. Buying an NFIP policy doesn't change that, because flood is still excluded under your property policy. Unless flood has been specifically added to your income coverage, a flood closure isn't covered on either side.
The 30-day wait
By statute, a new NFIP policy (or an increase in coverage) generally doesn't take effect until 30 days after the application and premium are complete. You can't buy it when the forecast turns. The law carves out three exceptions:
- Loan-related purchases. No waiting period when coverage is bought in connection with making, increasing, extending, or renewing a loan.
- Map revisions. When a revised flood map newly puts your building in a high-risk zone, coverage bought in the window after the change takes effect after a one-day wait.
- Post-wildfire flooding. If your property is affected by flooding on federal land that's caused or worsened by post-wildfire conditions, and you bought coverage no later than 60 days after the fire's containment date, the 30-day wait doesn't apply. FEMA decides this case by case.
The fine print on what counts
The NFIP's definition of "flood" is narrower than most people expect. It requires a general and temporary inundation of two or more acres of normally dry land, or of two or more properties (one of them yours), from overflowing water, unusual and rapid runoff of surface water, or mudflow. Water that only affects your building, like a burst pipe or a roof leak, isn't a flood under this policy.
Basements and areas below the lowest elevated floor are also limited. Coverage there is restricted to a short list of items installed in their functioning locations, such as furnaces, water heaters, central air units, sump pumps, and electrical equipment. Inventory, finished walls and floors, and most contents stored below grade are generally not covered.
Lenders, flood zones, and the Las Vegas reality
Federal law (42 U.S.C. 4012a) requires regulated lenders to make sure a building in a Special Flood Hazard Area securing a loan carries flood insurance for at least the lesser of the loan balance or the NFIP maximum. That same law requires lenders to accept private flood insurance that meets the statutory definition, and federal banking regulators put that into effect in a joint rule effective July 1, 2019. You aren't locked into the NFIP to satisfy your loan.
The problem is everyone outside the mapped zones. FEMA reports that from 2014 to 2024, nearly one-third of NFIP claims came from outside high-risk flood areas. Those owners weren't required to buy anything, and many didn't.
That matters here. Las Vegas and the rest of Clark County have FEMA-mapped high-risk zones (A, AE, AO, and AH) along washes and channels, but desert flash floods don't stay inside map lines. A summer storm can send runoff across a parking lot and through the front door of a building in a moderate- or low-risk zone like Zone X. Your zone decides whether your lender requires flood coverage. It doesn't decide whether you'll flood.
The program itself runs on extensions
The NFIP has to be reauthorized by Congress, and it has been running on short-term extensions for years. As of November 2026, its authorization runs through December 11, 2026, under an extension signed September 2, 2026. It lapsed twice in the past year: from October 1 to November 12, 2025, and again from February 1 to 3, 2026.
During a lapse, existing policies stay in force until they expire, but FEMA can't sell new policies or renew expiring ones. If your renewal falls inside a lapse, you can be left without flood coverage until Congress acts.
How businesses close the gaps
- Excess flood. Sits above the NFIP's $500,000 limits for buildings and contents worth more.
- Private flood. Can be written as primary in place of the NFIP. Depending on the policy, it may offer higher limits, replacement cost, or business income. Terms vary widely, so read the form.
- Flood under a commercial property policy. Some property policies can add flood by endorsement, often with a sublimit and its own deductible.
- Difference in conditions (DIC). Fills in perils like flood that the main property policy excludes, often for larger or multi-location properties, and frequently written above an NFIP or private primary layer.
- Flood business income. Whichever route you take, confirm that flood is a covered cause for your income and extra expense coverage, not only for the building.
Our approach
At Cory Washington & Co., we start with your exposure: building and contents values, what's stored below grade, how long you could be closed, and where your property actually sits. Then we build commercial flood insurance to fit it, whether that's an NFIP policy with excess on top, a private flood policy, or flood added through your commercial property insurance or a DIC policy. We pay particular attention to tying flood into your business interruption insurance, because that's the gap the NFIP leaves wide open. If your lender's requirements or loan documents are unclear, talk to your attorney about the contract terms.
We do this for restaurants, retail stores, and apartment building owners across all 50 states. For background, see our guides to commercial property insurance basics and business interruption insurance.
Not sure what your flood coverage would actually pay after a closure? Request a policy review and we'll walk through it with you.
Frequently Asked
Does NFIP flood insurance cover business interruption?
No. The NFIP's commercial policy, the General Property Form, pays only for direct physical loss by flood and specifically excludes loss from interruption of business, loss of use, and other economic loss. If your business is closed for months after a flood, the NFIP pays toward the building and contents but nothing for lost income or ongoing expenses. That income protection has to come from a separate flood business income endorsement or policy.
What are the NFIP flood insurance limits for a commercial building?
For a non-residential building in the Regular Program, the NFIP offers up to $500,000 of building coverage and up to $500,000 of contents coverage, purchased separately with their own deductibles. Losses are settled at actual cash value, meaning replacement cost minus depreciation. Values above those limits need excess flood, private flood, or flood coverage under a commercial property or difference-in-conditions policy.
Will my business income insurance pay if my business floods?
Usually not. A standard business income form only pays when the shutdown is caused by direct physical damage from a covered cause of loss, and standard commercial property forms exclude flood. Having an NFIP policy doesn't change that, because flood is still excluded under your property policy. You need flood specifically added to your business income coverage, or a separate policy that includes it.
Do I need flood insurance if my business isn't in a high-risk flood zone?
Not by law, but the risk is real. FEMA reports that from 2014 to 2024, nearly one-third of NFIP claims came from outside high-risk flood areas. The federal purchase requirement applies only to loans from regulated lenders on buildings in mapped high-risk zones, so most businesses outside those zones are uninsured for flood unless they chose to buy it.
This article is general information for business owners, not insurance or legal advice, and does not bind or alter coverage. Policy terms, eligibility, and pricing vary by carrier and state — confirm specifics with our licensed team before making decisions.