Most flood insurance must be purchased separately and is offered through a government program called the National Flood Insurance Program
. The cost of flood insurance is based on a number of factors unique to your property. Most important of these factors is your flood risk as areas with a higher risk of flooding generally cost more to cover. Other factors that can affect the cost include the value and amount of possessions to be covered and the type of property to be covered such as a primary residence or a nonresidential property.