Rockwall, TX Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Freeboard requirement
- 2.0 feet above BFE
- Applies to
- New construction, substantial improvements
- Certification required
- PE, architect, or surveyor
- Enforced by
- Floodplain administrator
Summary
Rockwall requires new and substantially improved buildings in flood hazard areas to sit 2 feet above the base flood elevation.
New construction and substantial improvement of any residential structure shall have the lowest floor (including basement), elevated a minimum of 2.0 feet above the base flood elevation caused by discharges resulting from a fully-developed watershed. A registered professional engineer, architect, or land surveyor shall submit a certification to the floodplain administrator that the standard of this subsection... is satisfied.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 25 Update 1).
Full Breakdown
In special flood hazard areas, Rockwall's code requires new construction and substantial improvements of residential structures to have the lowest floor, including any basement, elevated at least 2.0 feet above the base flood elevation caused by discharges from a fully-developed watershed. A registered professional engineer, architect, or land surveyor must certify to the floodplain administrator that this standard is met. Nonresidential structures face the same elevation option or must be floodproofed to the same 2.0-foot height.
Violations & Fines
Building below the required elevation without certification can block occupancy permits and void flood insurance eligibility under NFIP rules enforced by the floodplain administrator.
Frequently Asked Questions
How far above base flood elevation must Rockwall homes be built?
Who certifies compliance with Rockwall's flood elevation rule?
Sources & Official References
Other rules in Rockwall
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