Miami-Dade and Broward are the two counties Florida’s building code treats as the High-Velocity Hurricane Zone. Wind on an office, retail or warehouse building here carries its own deductible, set by the policy, not by the state’s residential deductible rules. Send me the roof, opening protection and recertification documents and I can show the building to the property and wind markets that fit it.
What is different about a South Florida commercial building
- High-Velocity Hurricane ZoneThe Florida Building Commission defines the zone as Miami-Dade and Broward Counties, with their own wind design rules in the state code.
- RecertificationMiami-Dade requires a structural and electrical recertification when a building reaches 30 years, and every 10 years after that.
- Wind deductibleOn a commercial building it is a term of the policy, usually a percentage, and the trigger differs from one quote to the next.
- CitizensThe state-created insurer writes commercial nonresidential property only when no authorized insurer will make an offer.
- Surge and floodMiami-Dade maps five storm surge planning zones. Surge is flood, and flood is never part of the property policy.
The High-Velocity Hurricane Zone
A Florida Building Commission publication on the code’s wind provisions states that the High-Velocity Hurricane Zones are specifically defined as Miami-Dade and Broward Counties, and that a single design wind speed applies across the zone for each risk category of building. It also notes that elsewhere in Florida only glazed openings need protection from wind-borne debris, while the zone requires the whole building envelope to be impact resistant.
That is why the first underwriting questions are about the envelope, with dates:
- Roof: covering type, year of the last full replacement, permit record, and how the deck and covering are attached.
- Openings: impact-rated glass, shutters or neither, for storefronts, windows, overhead doors and skylights.
- Year built: and the code the building was permitted under, plus later permitted re-roofing or window work.
- Rooftop equipment and signs: how the units are anchored, and whether signs and awnings are on the schedule.
A building updated to current standards still has to be rebuilt to current code after a serious loss. Ordinance or law coverage pays that difference up to its limit.
Recertification at 30 years: which buildings
Miami-Dade County has run a building recertification program since 1975 and amended it on June 1, 2022. As the county describes it, buildings built on or after 1993 must be recertified when they reach 30 years and every 10 years after that. Buildings built between 1983 and 1992 were due by December 31, 2024. Those built in 1982 or earlier that already had a first recertification stay on their existing schedule. Coastal condominium and cooperative buildings of three stories or more follow an earlier, 25-year track, which is a separate rule and does not turn an office or warehouse into a 25-year building. Single-family homes, duplexes and very small buildings are outside the program.
The owner receives a notice and has 90 days to file reports from a Florida-registered engineer or architect certifying that the building is structurally and electrically safe for continued occupancy. The county’s templates now include infrared thermography on electrical systems of 400 amperes or greater, and parking lot illumination and waterway guardrail certificates where they apply. Buildings of four stories or more, and other threshold buildings, need separate structural and electrical engineers.
For insurance, the report is the most useful single document an older building has. A recertification that is overdue, or open repair items from the engineer, are things an underwriter will ask about, so I ask first. Check the status with the building department that has jurisdiction over your address.
Wind and named-storm deductibles on a commercial building
Florida’s hurricane deductible statute, section 627.701, is written for personal lines and commercial lines residential policies, which covers homes, condominium associations and apartment buildings. It does not set the deductible on an office building, a retail strip or a warehouse. On those, the wind deductible is whatever the policy says, and I see three things vary between quotes:
- The trigger: hurricane only, any named storm, or all wind and hail. A named-storm deductible applies in a tropical storm that never becomes a hurricane.
- The base: a percentage of the insured value, which may be figured per building, per location or on the total values at all locations.
- What it applies to: building only, or building plus contents and business income together.
Some insurers exclude wind entirely in the coastal counties, and the wind is then bought as its own policy that has to line up with the fire policy on values and dates. I put the deductible wording side by side so you can see what a storm would actually cost you. Hurricane deductibles explained.
Citizens for commercial nonresidential buildings
Citizens Property Insurance Corporation describes its commercial policies as coverage for owners who cannot find it in the private market and who meet its underwriting eligibility criteria. For commercially operated nonresidential property it offers multiperil and wind-only policies where available, and it says a wind-only policy covers only damage from hail and wind storms such as hurricanes and tropical storms. Under section 627.351(6), the nonresidential wind-only form applies only in the coastal areas that were eligible for the former Florida Windstorm Underwriting Association as defined on January 1, 2002.
Citizens’ new-business guide for agents sets a stricter test for commercial nonresidential than for residential: the applicant must be unable to get any offer from an authorized insurer, and the rule that admits residential risks when a private offer is more than 20 percent higher does not apply. The guide lists mercantile, office, restaurant and hotel occupancies among the eligible types. It also says that when a building’s replacement cost is above Citizens’ maximum limit, first-loss rules apply, meaning the policy covers only part of the value. On a larger building, then, Citizens is at most one piece, with the surplus lines market carrying the rest. Liability is bought separately either way.
Storm surge zones and flood
Miami-Dade defines a storm surge planning zone as an area that could see surge of a foot and a half or more during a hurricane, and maps five of them, A through E, with Zone A at greatest risk from a Category 1 storm and higher. The county is explicit that these zones deal strictly with storm surge and are not your flood zone, so a building has two separate answers to look up.
The National Hurricane Center’s reports show what surge does here. In Andrew in August 1992 the storm tide reached 16.9 feet on the western shore of central Biscayne Bay. In Irma in 2017 the center passed well to the west, yet parts of Miami-Dade, especially along Biscayne Bay, saw four to six feet of inundation above ground, and the report attributes much of the flooding in downtown Miami and Brickell to rain that could not drain into the raised bay.
None of that is covered by a commercial property or wind policy. Flood is a separate policy. The National Flood Insurance Program’s maximum for a non-residential building is five hundred thousand dollars, with the same amount available for contents, and it does not pay for business interruption or loss of use. Buildings worth more than that need private or excess flood above it, and income protection for a flood shutdown has to come from the private market. Commercial flood insurance.
What to send me
- Address, year built, stories, square footage and construction type, with occupancy by tenant.
- Roof: type, year replaced, permit, and any roof condition or wind mitigation inspection.
- Opening protection: impact glass or shutters, with product approval paperwork if you have it.
- Recertification: the latest structural and electrical reports, or the county notice and the engineer’s schedule.
- Flood: elevation certificate if one exists, and the current flood policy.
- Rent roll and annual rental income, so the business income limit matches a realistic rebuild time.
- Current declarations pages and five years of loss runs, including any hurricane claims and how they were repaired.
I am an independent broker and I work with Florida building owners from my office in California. More about commercial property coverage, and lessor’s risk for a building leased to others.
Common questions
Who insures commercial buildings in Miami?
Admitted insurers write some, the surplus lines market writes many of the rest, and Citizens is available for commercial nonresidential property only when no authorized insurer will make an offer. Wind is often placed separately from fire and other perils.
Why is the wind deductible on my Miami building a percentage?
On commercial buildings the wind deductible is set by the policy, usually as a percentage of insured value. Check whether it is triggered by a hurricane, any named storm or all wind and hail, and whether it is figured per building or per location.
Does my office building need the 30-year recertification in Miami-Dade?
Generally yes. The county requires recertification when a building reaches 30 years and every 10 years after, with single-family homes, duplexes and very small buildings outside the program.
Does commercial property insurance in Miami cover storm surge?
No. Storm surge is flood, and flood is a separate policy through the National Flood Insurance Program or a private flood insurer.
Can Citizens insure my commercial building?
Only if you cannot get any offer from an authorized insurer and the building meets Citizens’ underwriting rules. When the replacement cost is above its maximum limit, Citizens covers only part of the value.
Is flood insurance from the NFIP enough for a Miami commercial building?
Often not. Its non-residential building maximum is five hundred thousand dollars and it does not pay for business interruption, so larger buildings add private or excess flood.
General information about insuring commercial buildings in Miami-Dade and Broward Counties as of November 2026, not legal advice. Recertification schedules are set by county ordinance and administered by each building department; Citizens eligibility and limits are set by statute and its underwriting manuals and change. Confirm your building’s status with your building official. Coverage depends on the policy issued. Coverage depends on underwriting and the terms, conditions and exclusions of the policy actually issued.