Every flood leaves water inside buildings, and the EPA gives you 24 to 48 hours to dry it out before mold moves in. The water leaves in a day. The bill takes years. (EPA)

The repair: Remediation averages $2,368, and $10,000 to $30,000 for a whole house, according to Angi. In North Carolina after Hurricane Helene, Grist found that a $5,000 cleanup left to wait can grow into a $30,000 one. (Angi, 2026-07-09 | Grist, 2026-02-25)

The landlords: Insurance premiums are up 300% or more, says the CEO of Local Initiatives Support Corp. A Las Vegas jury awarded one family $6.6 million in February. Defending a mold claim without insurance costs an owner $50,000 to $100,000. (Bisnow, 2026-09-20)

The wait: Most FEMA help ends after 18 months. The federal housing grants that pay for long-term repair take an average of 20 months to start paying out. After the 2014 storms and flooding in southeast Michigan, that money was never allocated at all. (Urban Institute, 2021-01-25)

TLDR: The water is gone in a day. The mold can start within two. The money to fix it takes twenty months, when it comes at all.