Why does Florida have mobile/manufactured home installation standards that exceed HUD requirements?
Monday, June 11, 2018
Hurricanes, Humidity And Sand
Florida has frequent hurricanes, sandy soil, and a hot/humid climate. Although any one of those factors does not make the state unique, the combination of all three does. But Florida abided by the same HUD national standards for manufactured homes as all the other states across the U.S. from the time they became law in 1976.
Big Changes After Cat-5 Andrew
Then Hurricane Andrew swept across South Florida in 1991. Just about all the mobile homes in the hardest-hit areas around Homestead, near the southern tip of the state, were knocked off their foundation piers and ripped apart by the storm. HUD responded by creating a new Wind Zone 3 just for us several years later in 1994, with tougher wind-resistant standards for South Florida.
But the state determined that installation standards that exceeded HUD guidelines were necessary for safe occupancy of a manufactured home. So Chapters 15C-1 and 15C-2 of the Florida Administrative Code were created in 1999. The regulations are enforced by the Manufactured Housing Section of the Florida Department of Highway Safety and Motor Vehicles.
Tougher Than HUD
Here’s some examples of the state’s stricter installation rules, which are often referred to as “Florida overrides”:
- Wood foundations are not allowed.
- Tie-down straps must be double-dip (0.60 oz. per sq. ft.) galvanized. HUD allows 0.30 oz. per sq. ft.
- Piers are required near each end of the home’s centerline, whether or not the manufacturer requires them.
- Minimum height from ground to bottom of frame I-beam is 18-inches, except that 25% of area can be lower, but not below 12-inches clearance. HUD allows lower.
- Piers over 52-inches high must be engineered. HUD accepts up to 80-inches before engineering necessary.
Download The State Requirements
To download a copy of the Department of Highway Safety and Motor Vehicles requirements Rule 15C-1 & 2 as a pdf document, click the link below:
Also, here is a link to a summary of the key requirements in 15C-1 and 2:
Timeline For Improvements To Installation Standards
For the dates when both HUD and the State of Florida tightened their standards for mobile home manufacture and installation, see our blog post What year were mobile homes required to become more storm resistant?
Here’s links to a collection of our blog posts about MOBILE/MANUFACTURED HOMES:
- Andrew Hurricane Damage Photo by NOAA
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