If you install hurricane shutters or impact windows in Florida, you know the drill: pull the permit, do the work, pass the inspection, and the homeowner gets an insurance discount. Flood barriers are a different animal, and a recent Miami Herald story shared by WUSF lays out just how murky that market has become for homeowners and the people they hire.
The short version: federal regulations and the Florida Building Code bar single-family homeowners in flood zones from installing permanent flood barriers at all. A homeowner who puts them up anyway can risk losing flood coverage or having a claim denied.
That's a real problem in a market that, according to the Herald's Alex Harris, has exploded as more Florida homeowners find water at their doors.
"Some communities are trying to put together a permitting process for this. People want to do this, but they need guidance," Florida floodplain management consultant Del Schwalls told the paper. "As soon as you get past sandbags the rules get real shades of gray."
Permanent versus temporary
The confusion starts with two categories of products: temporary and permanent. Permanent barriers are anything screwed into a wall or permanently attached to a structure. Like shutters, they need a permit and an inspection. But for single-family homes in flood zones, which covers most of coastal South Florida, you can't get that permit.
The reason is engineering. Flood panels count as "dry floodproofing," meaning the structure is altered so water goes around it instead of through it. The National Flood Insurance Program and the Florida Building Code don't allow that for single-family homes in flood zones, because those houses usually aren't designed to handle the weight of water pushing on them.
The stakes are high for local governments, too. The NFIP bars communities from allowing dry floodproofing of homes in flood zones, and ignoring that rule could get flood insurance coverage pulled for an entire community. Banks require flood insurance for a mortgage, so that would be a disaster.
Different rules in different towns
Even so, cities and counties are handling it differently. Miami-Dade told the Herald it doesn't issue flood panel permits for residential properties in flood zones. The city of Naples says on its website that it will issue permits for some homes in flood zones if the foundation is strong enough to resist the water. Fort Myers Beach issued flood panel permits for a few years until FEMA found out and stopped it, according to reporting by the Cape Coral Breeze. FEMA didn't respond to the Herald's request for comment.
Putting panels up without a permit is a gamble. "You absolutely can get your policy revoked or your claim denied. You structurally modified the building without a permit," Schwalls said.
Some private flood insurers do offer discounts for homes with flood barriers, according to Stephen Gill, founder of Flood Risk America, which sells them. Gill estimated custom, certified flood panels for a three-bedroom, two-bath home run somewhere around $22,000. But private carriers are still rare. The Herald cites an estimate that 9 out of 10 flood policies in Florida are still with the FEMA-backed program.
Commercial work is another story
On the commercial side, flood panels are permitted and even encouraged with insurance discounts, including from the NFIP. Gill's company has installed barriers at Mary Brickell Village and Tampa General Hospital.
For homes, temporary products are much more likely to get the green light. Inflatable dams, barriers that attach to doors a lot like dog gates, and waterproofing tapes and foams are generally fine to install. "Temporary flood barriers on a residential building are not dry floodproofing," Miami Beach chief resilience officer Amy Knowles said in a statement. Miami Beach has put out guidance for homeowners dealing with low-level, frequent flooding, and the city says it will permit temporary barriers that follow local and state codes.
Why it matters for Contractors
If you do shutters, windows, doors or waterproofing work in Florida, homeowners are going to ask you about flood panels, and the honest answer depends on where the house sits and what's being attached. A permanent panel on a single-family home in a flood zone may not be permittable at all, and it can put your customer's flood coverage at risk. Check with the local building department before you quote, keep temporary options in your lineup, and send customers to their insurer before anything gets bolted to a wall. On commercial jobs, the door is wide open.