Excess flood insurance in Florida,
for the part of the house the NFIP will not pay for.

Excess flood insurance is a second flood policy that attaches at the top of the NFIP policy and pays the rest of a flood loss up to the replacement cost of the home. The NFIP residential policy stops at 250,000 dollars on the building and 100,000 on contents. A Gulf Coast waterfront home that costs 2, 4 or 8 million to rebuild has every dollar above that line uninsured for flood unless an excess layer is in place. The structure is the NFIP policy kept primary, because the federal program does not non-renew after a claim, with a private excess policy from Neptune, Lloyd’s or a similar market above it. All of Florida is a flood zone, hazardous or non-hazardous. The question is never whether a high value home needs flood insurance but how much and in what layers.

The National Flood Insurance Program writes one residential form with one set of maximums, and FloodSmart, the program’s own site, lists them: up to 250,000 dollars of flood damage to the building and up to 100,000 for belongings inside it. The limits are the same for a 1,400 square foot ranch in Bradenton and a 6,000 square foot house on the bay side of Longboat Key. On the waterfront the gap is the whole story. The arithmetic on a home that would cost 3 million to rebuild with 600,000 of furnishings, art and equipment inside it:

A surge does not have to take the whole house to blow through 250,000. Four feet of salt water through a ground floor with stone, millwork, cabinetry, wiring and air handlers takes every finish and every mechanical system below the water line, and on a custom home that repair alone runs past the NFIP building limit. The contents limit goes faster, and the NFIP form settles contents at actual cash value, with art capped at 2,500. The Florida flood insurance page covers the primary policy for homes that fit inside the NFIP limits. This page is about the ones that do not.

A well elevated home can sometimes get a private flood quote for the full value that costs less than the NFIP policy plus an excess layer. The agency position at Hendrickson Insurance is to decline that structure, because of what happens the year after a claim.

A private flood carrier can change its mind. It can tighten its appetite after a bad season, stop writing barrier islands, or non-renew the policies that just paid a loss. That is general market practice; a private insurer protects its own balance sheet, and the homes that flooded last September are the ones its actuaries want off the books. The NFIP does not behave that way. It is a federal program, the policy renews after a claim, and a house that has flooded three times can still buy the same policy at renewal. The rate may rise under Risk Rating 2.0, but the coverage stays.

So the structure is fixed: NFIP first, through Wright Flood, which issues the federal policy under the Write Your Own program, and a private excess policy above it from Neptune, Lloyd’s or another excess market. The excess carrier may non-renew after a claim too, and the agency replaces it if that happens. What the household never loses is the primary layer, the one a lender, a buyer and an adjuster all look for first.

The excess policy usually carries no deductible of its own, because the NFIP deductible was already taken at the bottom of the tower; if a quote shows one, ask why. And every excess form requires the NFIP policy to be in force at the stated limits. If the NFIP policy lapses on a missed renewal, a 3 million excess limit has nothing to attach to and pays nothing.

Risk Rating 2.0 is the pricing method the NFIP moved to in three phases from October 2021 through April 2023. FEMA describes it as rating each property using flood frequency, multiple flood types including river overflow, storm surge, coastal erosion and heavy rainfall, distance to a water source, and property characteristics such as elevation and the cost to rebuild. Before that, NFIP rates were tied to the map zone and the elevation certificate. Now the certificate is one input a policyholder can still supply if it produces a better rate.

The excess carrier does not use FEMA’s pricing. It underwrites the home itself, and on a coastal lot it wants the certificate: the lowest floor elevation against the base flood elevation, the flood zone, the construction, and whether the space below the living floor is an open breakaway enclosure or finished. A house on Bird Key built at grade in 1965 and a house on Casey Key built on pilings in 2019 are different risks, and the certificate is how the underwriter tells them apart. A licensed surveyor prepares it, and the one from the original construction or the last sale is usually in the closing file. The zone itself is on the FEMA map at the Flood Map Service Center, and it is a starting point; the certificate shows the number.

The mandatory purchase requirement is federal law, at 42 U.S.C. 4012a. A federally regulated or insured lender making a loan secured by a building in a Special Flood Hazard Area must require flood insurance at least equal to the outstanding principal balance of the loan or the maximum limit of coverage made available under the Act for that type of property, whichever is less. The banking regulations that implement it add the building’s insurable value as a third cap.

On a high value home the result surprises people. A 4 million jumbo mortgage on a Siesta Key home in an AE zone triggers the requirement, and 250,000 of NFIP coverage satisfies it, because that is the maximum the Act makes available for a residential building and it is less than the loan balance. The federal rule stops there.

What the lender does next is contract, not statute. Private banks and portfolio lenders on jumbo loans routinely write their own flood requirement into the loan documents, at full replacement cost or the loan amount, with the lender named as mortgagee on the excess policy as well as the NFIP policy. Send the insurance covenant to Dennis before closing, because the excess policy has to satisfy it, and a lender that finds the coverage short can force-place a policy that protects its interest only and bill the borrower.

Two of these matter most on the Gulf Coast. Additional living expense: the NFIP pays nothing toward the rental on the mainland while the island house dries out for eight months. And detached structures: the NFIP form extends 10 percent of the building limit to a detached garage, out of the 250,000, not on top of it, and every other detached building needs its own NFIP policy or a scheduled limit on the excess.

Two zone letters do most of the work on a Gulf Coast application. VE is the coastal high hazard area, where FEMA maps the one percent annual chance flood with wave action and a building is expected to take waves of three feet or more. AE is the same flood with a base flood elevation set but without the wave hazard. VE runs along the Gulf beaches and the open bay fronts; AE covers most of the canal neighborhoods, the bay side of the islands and the low ground on the mainland. Both trigger the lender rule, and both flood. The 2024 storm season put water in homes on these streets that had never had it.

How the private-client carriers underwrite one of these islands is in private client home insurance on Longboat Key. The flood program is the same on all of them; what changes is the elevation and the zone.

• Report the flood claim to the NFIP carrier first. Wright Flood, or whichever Write Your Own company issued the policy, opens the file and assigns the NFIP adjuster. Notify the excess carrier the same day; it waits on the NFIP adjustment but needs notice now. The wind claim goes to the homeowners carrier separately.
• Photograph everything before anything moves. The water line on every wall, the mechanical systems, the dock and seawall. Then again as things come out. Keep samples of flooring, drywall and cabinetry; on a custom home the difference between builder grade and what was there is most of the claim. Keep every mitigation receipt.
• Start the contents inventory. Room by room: item, age, replacement cost, photograph. The NFIP pays actual cash value against its 100,000; the excess claim above that runs on the excess form. One inventory serves both.
• Watch the proof of loss deadline. The NFIP dwelling form requires a signed, sworn proof of loss within 60 days of the loss unless FEMA extends it. The excess carrier has its own deadline. Missing either is the most common way a large flood claim goes wrong.
• Do not settle the NFIP claim short. The excess attaches at the NFIP limit. If the NFIP file closes below its limit on a loss that clearly exceeds it, the excess carrier points at the gap.
• Call Dennis on day one. One agent holding the NFIP, excess and homeowners policies is the reason three adjusters end up reading the same file.

• Address and the current NFIP declarations page. If there is none, the NFIP application goes in first and the 30 day clock starts.
• Elevation certificate, or a new one from a local surveyor.
• Replacement cost estimate or recent appraisal, and a contents figure that reflects what is on the ground floor.
• Year built, construction and foundation type, and what sits below the living floor.
• Every detached structure on the lot: guest house, cabana, garage, dock, boat lift, seawall, pool.
• Prior flood claims at the address, including a prior owner’s, and the lender’s insurance requirements.
• Current homeowners declarations page, so the flood layers and the personal umbrella are sized to the same house.

Dennis reads every application himself and responds the same business day in most cases, always within 48 hours. The NFIP quote and the excess quote come back together so the household sees the whole tower at once.

Apply for an excess flood quote

Dennis Hendrickson owns Hendrickson Insurance in Sarasota, Florida, FL License E095547, and is the only person who touches your file. He writes the household and the business for Gulf Coast owners himself. Sources used on this page: FloodSmart, what the NFIP covers and the residential limits; FEMA, Standard Flood Insurance Policy dwelling form; FEMA, Risk Rating 2.0; 42 U.S.C. 4012a, flood insurance purchase and compliance requirements; FEMA, mandatory purchase requirement; FEMA Flood Map Service Center; FloodSmart, the NFIP. Last reviewed September 2026.