Mold Remediation in Jacksonville, FL

When the St. Johns or a storm puts water in the house, the crew cuts drywall and insulation out above the flood line, lifts wet flooring, and runs drying equipment until the studs and slab test dry; only then is the framing cleaned. River water is not clean water, so anything porous it soaked is thrown away.

Crawl space jobs are different. The crew removes damaged insulation, cleans and treats the framing, and the moisture problem is addressed with a vapor barrier, drainage, ventilation changes, or encapsulation. Ask who handles each part.

Before you sign, ask for two documents: the DBPR remediator license number and the certificate for the $1 million in mold-inclusive liability coverage Florida requires.

River and storm flooding

Jacksonville averages about 53.4 inches of rain a year (NOAA), with the wettest stretch from June through September, and the St. Johns River, its creeks, and the coastal marshes keep water close to many neighborhoods. The record river crest during Hurricane Irma in 2017 flooded homes in San Marco and other riverfront areas. Water that sits in a home even for a day soaks drywall, insulation, and flooring, so expect a flood cut and full drying rather than a surface clean.

Raised homes in the historic neighborhoods

In Riverside, Avondale, and Springfield, many early 1900s homes sit over crawl spaces. Remediation there can include sections of subfloor and joists, and it only lasts if the crawl space stays dry afterward. Encapsulation, a sealed liner with controlled humidity, is one option; better drainage and a ground vapor barrier are others. Our guides on crawl space mold and mold on a subfloor explain the choices.

Hiring in Duval County

• Get the plan from an independent mold inspection in Jacksonville; the assessor generally cannot do your removal for 12 months.
• Duval has fewer licensed pros than South Florida, so after storms schedules fill fast. Book early, but still verify the license at myfloridalicense.com.
• Ask what is excluded: crawl space encapsulation, rebuild, and flooring are often separate.
• Make clearance part of the deal; mold testing in Jacksonville explains it.

What it costs

Statewide price guides (2025–2026) start contained cleanups near $500, place a typical house between $1,500 and $6,000, and take large or concealed growth beyond $10,000. Crawl space encapsulation and flood cleanup can add to the total. See our mold remediation cost guide.

When you call

Say whether the water came from the river, a storm, or a leak, and whether the house is raised or on a slab. The local company you are connected with will tell you whether to start with an assessment and what the visit costs. The call is free, and hiring is your call.

Remediation over about 10 square feet in Florida requires a DBPR mold remediator license and $1 million in liability coverage that includes mold. Check the number at myfloridalicense.com, and expect a different company to have done the assessment.