The City of Houston’s floodplain regulations went into effect on September 1st, 2018. Below is a high-level overview of the effective changes.
Previously, Houston’s code applied to property in the 100-year floodplain. The new revisions include the 500-year floodplain.
The existing Chapter 19 regulations required a finished floor elevation at the 100-year floodplain elevation plus one foot. The updated regulations require a minimum elevation at the 500-year floodplain level plus two feet.
Zero Net Fill
Zero net fill restrictions previously applied to property in the 100-year flood zone. The new regulations will extend the zero net fill criteria to the 500-year flood zone.