New Florida Law Requires Flood Disclosure; Addendum Protects Buyers on Insurance Costs

Florida home sellers now face a statutory obligation to disclose any history of flooding on their property before a buyer signs a purchase contract, under a recently enacted state law addressing the flood risk that shapes real estate values across the state. The disclosure requirement, codified in Section 689.302 of the Florida Statutes, compels sellers to reveal whether they know of past flooding and whether they received insurance payouts or other financial assistance to repair flood damage.

Alongside the mandatory disclosure, Florida Realtors is spotlighting an existing contract tool — Addendum H for Homeowner's/Flood Insurance — that allows buyers to terminate a deal without penalty if they cannot secure standard homeowner's or flood insurance at a price they deem affordable. The addendum, which predates the new disclosure law, has become increasingly relevant as insurance premiums climb statewide and buyers weigh the total cost of homeownership in flood-prone areas.

What the new disclosure law requires

Under the statute, residential property sellers must complete and provide the flood disclosure to prospective buyers at or before contract execution. The law prescribes the exact form the disclosure must take. Florida Realtors offers the mandated disclosure as Form FD-2 on its Form Simplicity platform, and the organization states the form must be used in every residential transaction in Florida.

The disclosure asks sellers whether they have any knowledge of flooding on the property and whether they have received insurance proceeds or other financial assistance — such as FEMA grants or loans — to repair flood-related damage. The statute does not define a minimum threshold of water intrusion that constitutes disclosable flooding, leaving sellers to interpret whether past events meet the requirement. Legal guidance typically advises sellers to err on the side of disclosure to avoid post-sale disputes or misrepresentation claims.

The legislature's decision to mandate the disclosure reflects Florida's recurring exposure to tropical weather systems and the outsized role flood risk plays in home values. Unlike wind damage or other perils, flooding is explicitly excluded from standard homeowner's insurance policies, and federal flood insurance through the National Flood Insurance Program (NFIP) or private carriers is a separate purchase. The disclosure gives buyers advance notice of a property's flood history so they can assess insurance needs and costs before committing to a purchase.

How Addendum H protects buyers on insurance affordability

Addendum H to the Florida Realtors/Florida Bar (FR/Bar) residential purchase contracts offers buyers two distinct protections, each activated by checking a box on the form. The first checkbox addresses general homeowner's insurance, allowing a buyer to specify a maximum annual premium they can afford and set a deadline — defaulting to 30 days after the contract's effective date or 10 days before closing, whichever the parties choose — by which they must confirm insurance is available at that price. If the buyer cannot obtain coverage within the stated premium cap by the deadline, they may terminate the contract and recover their deposit without penalty.

The second checkbox focuses specifically on flood insurance. Paragraph 10(d) of the standard FR/Bar and FR/Bar-ASIS contracts already permits a buyer to walk away if they cannot obtain flood insurance at all. Addendum H goes further: it lets buyers set a maximum acceptable flood insurance premium and a deadline for verifying affordability. If quotes exceed the buyer's stated ceiling, the buyer may cancel the transaction.

A buyer may select one or both checkboxes, tailoring the addendum to their circumstances. For example, a buyer considering a home near the St. Johns River or in a Special Flood Hazard Area (SFHA) mapped by FEMA might check both boxes, capping both the base homeowner's policy cost and the flood-insurance premium separately. The addendum requires the buyer to fill in dollar amounts and deadlines, making the affordability threshold explicit and enforceable.

The form was developed before the recent legislative session and has been available for years, but Florida Realtors is emphasizing its utility now as insurance premiums rise and the new disclosure law brings flood risk into sharper focus during negotiations. Richard Swank, Associate General Counsel for Florida Realtors, noted in the organization's announcement that the addendum "can give the buyer additional peace of mind by allowing them to set the maximum premium they are willing to pay."

Why this matters for Northeast Florida home buyers

Insurance affordability has become a front-burner issue for Northeast Florida buyers, particularly in St. Johns, Duval, and Nassau counties, where coastal exposure, riverfront properties, and low-lying inland areas elevate flood risk. Rising premiums for both windstorm and flood coverage — driven by a string of hurricanes, reinsurance-market stress, and FEMA's Risk Rating 2.0 methodology, which prices flood policies by individual property risk rather than zone averages — can add hundreds or thousands of dollars annually to a home's carrying costs.

Properties along the St. Johns River and its tributaries, near the Intracoastal Waterway, and on barrier islands such as Amelia Island or Jacksonville Beach face particularly acute flood-insurance requirements. Homes in FEMA-designated SFHAs typically require flood insurance as a condition of obtaining a federally backed mortgage. Even properties outside high-risk zones can flood, and lenders sometimes require coverage for moderate-risk areas as well. The new disclosure law ensures buyers learn early whether a home has flooded before, which can signal future risk and inform premium estimates.

For buyers stretching budgets to enter competitive markets like Nocatee, Ponte Vedra, or the Riverside and Avondale neighborhoods of Jacksonville, an unexpectedly high insurance quote after contract signing can upend financing or render a home unaffordable. Addendum H shifts the insurance-shopping timeline forward, giving buyers a contractual off-ramp if their insurance research yields quotes above their means. This is especially valuable in areas where flood zones or claims history may not be immediately obvious from listing photos or MLS data.

The addendum also protects buyers in markets where properties have been priced without fully accounting for insurance costs. A seller's disclosure of past flooding or insurance claims may not deter a buyer initially, but when that buyer solicits actual quotes and discovers annual flood premiums exceeding $3,000 or $5,000 — or windstorm/homeowner's coverage through the state-backed Citizens Property Insurance Corporation at elevated rates — Addendum H provides a mechanism to reconsider the deal before losing earnest money.

What this means for sellers and agents

Sellers must now budget time to complete the flood disclosure before marketing a home or as soon as an offer is made. The requirement adds a step to the pre-closing checklist but also reduces legal exposure: a seller who transparently discloses prior flooding is far less likely to face a post-closing lawsuit alleging material misrepresentation. Florida case law has long held sellers liable for failing to disclose known defects that materially affect property value, and undisclosed flood damage fits squarely within that doctrine.

Real estate agents representing buyers in Northeast Florida should proactively discuss Addendum H during the offer stage, particularly when properties are in or near flood zones, have sold recently with flood-related contingencies, or show signs of past water intrusion (such as elevated foundations or newer ground-floor finishes). Agents representing sellers should counsel clients to gather insurance and repair records before listing, so disclosures are accurate and buyers' due diligence is less likely to uncover surprises that trigger addendum terminations.

The disclosure form asks whether the seller received financial assistance to repair flood damage. Assistance can include NFIP payouts, private insurance claims, FEMA Individual Assistance grants, or Small Business Administration disaster loans. Sellers who repaired flood damage out of pocket but did not file a claim still must disclose their knowledge of the flooding itself. If a seller genuinely has no knowledge of prior flooding — for instance, they bought the home recently and it has not flooded during their ownership — they can answer "no" on the disclosure, but they cannot ignore red flags such as previous owners' flood claims found in a title search or property-history database.

How flood-zone designations and insurance interact

FEMA's flood maps divide Northeast Florida into zones ranging from high-risk SFHAs (typically labeled A or V zones) to moderate- and low-risk X zones. Properties in A or V zones generally require flood insurance if the buyer is using a mortgage from a federally regulated or insured lender. The cost of that insurance varies by the home's elevation relative to the Base Flood Elevation (BFE), the structure's age and construction type, prior claims, and the policy's deductible and coverage limits.

Under FEMA's Risk Rating 2.0 system, rolled out nationwide in recent years, premiums reflect property-specific flood risk rather than zone-wide averages, meaning two homes on the same street can face significantly different rates. Buyers using Addendum H should obtain quotes from both the NFIP (policies are sold through private agents but backed by the federal program) and private flood insurers, which have entered the Florida market and sometimes offer more competitive rates or higher coverage limits than the NFIP's $250,000 cap on building coverage and $100,000 on contents.

Properties outside SFHAs are not immune. Approximately 25 percent of flood-insurance claims nationwide come from moderate- or low-risk zones, according to FEMA. In Northeast Florida, heavy rainfall from stalled tropical systems, stormwater-drainage failures, and tidal flooding along the Intracoastal can inundate properties not mapped as high-risk. A seller's disclosure of past flooding on an X-zone property may prompt a buyer to seek a premium cap via Addendum H even if a lender does not require coverage, ensuring the buyer does not commit to a home only to discover optional flood insurance would cost more than budgeted.

What happens next for buyers and sellers

The flood-disclosure statute is now in effect, and Form FD-2 is available through Florida Realtors' Form Simplicity platform for members. Sellers listing homes should work with their agents to complete the disclosure before executing a purchase contract; failure to provide the disclosure at the statutorily required time could give a buyer grounds to void the contract or seek damages after closing if flooding is later discovered.

Buyers concerned about insurance costs — whether due to a property's location, age, claims history, or general market conditions — should ask their agents to include Addendum H with their offers. The addendum shifts the burden of proof onto the buyer to obtain quotes and demonstrate unaffordability by the stated deadline, so buyers should begin shopping for insurance immediately upon contract execution. Working with an independent insurance agent familiar with Northeast Florida's flood and windstorm markets is advisable, as rates and coverage vary widely among carriers.

Real estate attorneys and title companies in the region will incorporate the disclosure into their closing checklists, and agents should expect periodic updates from Florida Realtors as case law or administrative guidance clarifies the statute's application. The organization's legal hotline and continuing-education courses typically address emerging disclosure requirements, and agents unfamiliar with Addendum H can access the form and instructions through their MLS or brokerage compliance departments.

The pairing of mandatory flood disclosure and buyer-friendly insurance addenda reflects Florida's broader reckoning with climate risk and housing affordability. As Northeast Florida continues to attract in-migration and new development presses into low-lying areas — from the Westside's river floodplains to Nassau County's coastal A1A corridor — transparent communication of flood history and insurance costs will shape which deals close and which unravel during due diligence. For buyers and sellers navigating the region's competitive, flood-conscious market, the new disclosure law and Addendum H are tools to align expectations before money and emotion are sunk into a transaction that insurance realities might ultimately undo.