HouseChalkFlood zone designation
A flood zone designation is a FEMA classification that indicates the level of flood risk for a specific area.
Why it matters
Building in a high-risk flood zone requires flood insurance and may mandate elevated foundations, adding significant cost.
Where people get this wrong
Being outside a designated flood zone does not mean flooding is impossible. It means the risk is lower based on historical data.
Real-world example
Your lot is in Zone AE, which means it has a 1-percent annual chance of flooding. The bank requires flood insurance and the foundation must be elevated above the base flood elevation.
Where this hits your build
This matters during site work and foundation. Mistakes here get buried and are expensive to fix later. Pay attention before concrete is poured.
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