On Longboat Key, mildew tends to appear in condos and seasonal homes left closed through the humid months, and in the Village and other low areas where Helene's surge soaked drywall. Light surface spots can be cleaned by the owner, but mildew on walls that took water or spread through a unit calls for a professional. Call the number on this page to be connected with a local mold remediation company in Longboat Key.

Signs to watch for
- A musty smell when you open the unit after time away
- White or gray fuzz on leather, shoes, wicker or wood furniture
- Spotting on bathroom ceilings and inside vanity cabinets
- Dark film along sliding-door tracks and window frames facing the water
- Stains at the base of walls or on baseboards in rooms that flooded
- Mildew on supply vents or around the air handler closet
Furniture and fabric mildew in a closed unit is usually a humidity problem that cleaning and a working AC can solve. Growth at the base of walls after a storm is a materials problem.
Longboat Key conditions
Longboat Key is a barrier island town between Sarasota Bay and the Gulf, split almost evenly between Manatee County on the north end and Sarasota County on the south. Condominiums are a major housing type, and a large share of units are seasonal or occasional-use, so many homes sit empty for months at a time. That's ideal for mildew if the AC is off or set too high.
Storms add another layer. In 2024, Helene's surge reached up to 8 feet on parts of the key. The Village, one of its lowest-lying areas, had roughly 3 to 4 feet of water around homes and standing water inside some houses that ruined drywall and belongings, and Gulfside Road and other mid-Key neighborhoods were also badly damaged. Florida DOH advises drying wet building materials and carpet within 24 hours, since common molds can take hold when water stands that long.

What drives cost
Angi reports bathroom mold remediation in the Tampa area typically runs $525 to $1,075, and larger jobs $1,347 to $3,778. These are regional ranges, not quotes for an island unit, which is about 40 miles from Tampa. Pricing depends on:
- Light surface cleaning versus drywall and flooring removal
- Number of rooms and furnishings involved
- Condo rules on work hours, elevators and debris removal
- Repairs to the moisture source, such as a roof, window or AC drain
After you call
You'll be connected with an independent local company. Tell them whether the unit flooded, how long it was closed, and how to reach your association or building manager. Rebuilding work anywhere on the island, on either county's side, goes through the Town of Longboat Key Planning, Zoning & Building Department, which applies FEMA rules and barrier-island building standards that don't apply on the mainland.
Mold & Mildew Cleanup questions in Longboat Key
The house was closed up for months and smells musty. What now?
Can I paint or caulk over mildew?
What does professional mildew cleanup cost around Tampa Bay?
Should I run the AC if mildew is growing around the vents?
More mold services in Longboat Key
Mold & Mildew Cleanup nearby
Sources
- EPA: Mold Cleanup in Your Home
- EPA: A Brief Guide to Mold, Moisture and Your Home
- Florida Department of Health: Mold
- Angi: How Much Does Mold Remediation Cost in Tampa, FL?
- Wikipedia: Longboat Key, Florida
- Longboat Observer: Helene storm surge smothered homes
- Sarasota Magazine: Hurricane Helene flooding in Sarasota
- Town of Longboat Key: Planning, Zoning & Building
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