Why mold is common in Jacksonville
Jacksonville averages about 53.4 inches of rain a year under NOAA's 1991–2020 normals, about an inch more than the previous 30-year average, with the wettest stretch from June through September. Winters are cooler than in South Florida, but summers are just as humid, and the St. Johns River, its creeks, and the coastal marshes keep moisture close to many neighborhoods.
River flooding is Jacksonville's signature risk. When Hurricane Irma passed about 100 miles west of the city in September 2017, onshore winds and heavy rain pushed the St. Johns River to a record crest; downtown streets turned into rivers, and homes in San Marco and other riverfront neighborhoods flooded. Water that sits in a home even for a day soaks drywall, insulation, and flooring.
Jacksonville covers more land than any other city in the continental United States, so its housing varies widely, from early 1900s homes in Riverside, Avondale, and Springfield to newer subdivisions on the Southside. Older raised homes can have crawl spaces where moisture collects under the floor, while newer slab homes are more likely to hide leaks behind walls and around AC closets.
Mold services in Jacksonville
What mold work costs in Duval County
| Service | Typical range |
|---|---|
| Mold inspection with testing, Jacksonville area | $300–$477 |
| Small, isolated mold cleanup | From about $500 |
| Typical residential remediation, Florida | $1,500–$6,000 |
| Large or hidden growth | $10,000+ |
Inspection figures are homeowner-reported costs from the Ponte Vedra Beach area near Jacksonville. Remediation ranges come from Florida contractor price guides published in 2025–2026. Crawl space work and river-flood cleanup tend to cost more. See our mold remediation cost guide.
Florida mold licensing: what to check
In Florida, mold assessors and mold remediators need a DBPR license for jobs over about 10 square feet. Before anyone works on your Jacksonville home, check the license number at myfloridalicense.com and ask for proof of the $1 million liability coverage the law requires.
The company that assesses your home generally may not remediate it within the next 12 months, so the report and the removal usually come from different companies.
Will insurance cover it?
River and storm flooding are not covered by a standard homeowners policy; they need a flood policy. Water that enters through storm damage to the roof or windows may be covered by homeowners insurance, with mold paid up to your policy's mold limit, often $10,000. Mold from long-term humidity or a damp crawl space is usually treated as a maintenance issue.
Florida law requires notice of a new claim within 1 year after the date of loss; for a hurricane, that is the landfall date. Our guide on insurance and mold explains the details.
Areas we connect you in
Downtown, Riverside, Avondale, San Marco, Springfield, Ortega, Arlington, Mandarin, Southside, Northside, and surrounding neighborhoods of Jacksonville.