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Mayor proposes new floodplain development rules

Good idea.

Mayor Sylvester Turner

Mayor Sylvester Turner on Wednesday proposed tightening development rules to strengthen Houston’s defenses against flooding, the city’s first concrete step to change building practices since Hurricane Harvey inundated hundreds of thousands of homes last August.

Turner’s proposed changes would require all new buildings outside the floodplain to be elevated two feet above the ground, and all new construction within the 500-year floodplain to be lifted two feet above the projected flood level during a 500-year storm. Current rules stipulate that buildings be constructed one foot above the flood level in a 100-year storm.

The mayor also intends to make builders redeveloping large parcels of land provide more stormwater detention than city rules currently require.

“We have had floods in each of the last three years, with Harvey being the worst. There will be other epic rainstorms, and they probably will arrive a lot sooner than 100 years or 500 years from now,” Turner told City Council. “As we build back from the damage to existing homes, we have to build forward to prevent future homes from flooding.”

City officials expect to release proposed legal language in the coming weeks, then submit the new rules for City Council consideration by mid-February. If approved, there likely would be a months-long grace period before the laws take effect, Turner said.

Though not final, the city’s intended overhaul of development rules would be more extensive than those Harris County approved last month.

See here and here for the county’s development changes. As the owner of a pier-and-beam house, I have to say I don’t understand why more houses aren’t built that way, but maybe with this change more of them will be. This won’t be transformative – it only applies to new development – but you have to start somewhere, and given that we didn’t start this years ago, the next best time is now. I look forward to seeing the details.

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One Comment

  1. Manny Barrera says:

    Let us hope that the City and the Parks Department will do the same for their projects. Still waiting to see how all that concrete trails will be off set with detention. I don’t think any detention for all that impervious surface has been done or required.