Environmental Rules in Mcallen, TX (2026)
1 verified environmental rules for Mcallen, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
Flood Elevation Requirements
In McAllen's FEMA special flood hazard areas, new residential construction and substantial improvements must have the lowest floor, including basement, elevated to or above the base flood elevation, certified by a registered engineer, architect, or surveyor.
McAllen Floodplain: Elevate Lowest Floor to Base Flood Elevation
Some RestrictionsMcAllen, TX Code of Ordinances § 118-57(a) (Specific standards — Residential construction)
In all areas of special flood hazards where base flood elevation data have been provided ..., the following provisions are required: (a) Residential construction. New construction and substantial improvement of any residential structure shall have the lowest floor (including basement), elevated to or above the base flood elevation. A registered professional engineer, architect, or land surveyor...
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