Just a few inches of water from a flood can cause tens of thousands of dollars in damage. From 2007 to 2011, the average residential flood claim amounted to almost $30,000. Flood insurance is the best way to protect yourself from devastating financial loss. Flood insurance is available to homeowners, renters, condo owners/renters, and commercial owners/renters. Costs vary depending on how much insurance is purchased, what it covers and the property's flood risk.