Kansas City, MO Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Freeboard requirement
- 1 foot above base flood elevation
- Applies to
- New construction & substantial improvements
- Certification
- Missouri-licensed surveyor, engineer, or architect
- Enforcing office
- Building official as floodplain administrator
- Governing chapter
- Code of Ordinances Chapter 28
Summary
Kansas City requires new and substantially improved homes in flood hazard areas to elevate the lowest floor one foot above base flood elevation, with elevation certified by a Missouri-licensed surveyor, engineer, or architect.
New construction or substantial-improvement of any residential structures, including manufactured homes, shall have the lowest floor, including basement, elevated to one (1) foot above base flood elevation. The elevation of the lowest floor shall be certified by a Missouri licensed land surveyor, engineer, or architect.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 139 | Zoning and Development Code: Supplement 38).
Full Breakdown
The city's floodplain management chapter sets a one-foot freeboard above FEMA base flood elevation for the special flood hazard areas along its FIRM panels. New construction or substantial improvement of residential structures, including manufactured homes, must have the lowest floor, including any basement, elevated to at least one foot above base flood elevation, with equipment such as HVAC systems elevated to the same level. Non-residential buildings get the same freeboard or must be fully floodproofed and engineer-certified. The building official, as floodplain administrator, verifies elevation through a FEMA elevation certificate before permits close out.
Violations & Fines
Building without a floodplain development permit, or building below the required freeboard, violates Chapter 28 and can trigger permit denial, mandatory correction, and NFIP flood-insurance rating consequences.
Frequently Asked Questions
How much above base flood elevation must a Kansas City home be built?
Does the one-foot freeboard rule apply to commercial buildings too?
Sources & Official References
Other rules in Kansas City
Compare Kansas City to another location·View the Missouri environmental rules overview
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Flood Elevation Requirements in Nearby Cities
How other cities in Jackson County handle flood elevation requirements.