Iowa Code Ch. 329 — Airport Zoning / Airport Hazard Area Regulation (IA)
Tracked preemption from the Iowa overlay bundle.
Overview
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Effective
1945-07-01
Sunset
—
Authority
state
Scope
state:IA
Other Iowa preemptions
Iowa SF 592 (2025) — Statewide Accessory Dwelling Unit By-Right MandateIowa Code §414.1(2) — Short-Term Rental Preemption (Residential Use Classification)Iowa Code §459.310 — Master Matrix CAFO Siting ScorecardIowa Code Ch. 161D — Loess Hills Development and Conservation Authority + AllianceIowa Code §414.28 / §335.30 — Manufactured Home Zoning Parity MandateIowa Code Ch. 303 — State Historical Society / SHPO Review + Local Historic Preservation CommissionsIowa Code §352.6 — Agricultural Area Designation + Right-to-Farm Nuisance ProtectionIowa Code Ch. 455B + 567 IAC 71 — Floodplain Development Approval (DNR Flood Plain Program)
Trigger predicate
When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.
OR
parcel.geometrygeographic matchcity.has_airport_zoning_commission==True
Preempted fields
2 fields on the base district schema are rewritten when the trigger fires.
| Field | Op | Value | Note |
|---|---|---|---|
review_type | require | airport_zoning_commission_compliance | The municipality owning or controlling the airport AND the municipality within which the airport hazard area is located must adopt, administer, and enforce airport zoning regulations applicable to the airport hazard area (§329.9). Procedure mirrors §§414.4 and 414.6 for cities; counties follow comparable procedures. |
base_districts[*].height_in_airport_hazard_area | cap_at | faa_part_77_imaginary_surfaces_compliant | Height of structures and tree growth in airport hazard areas is regulated to prevent airport hazards — keyed to FAA Part 77 imaginary surfaces. Board of adjustment under §329.12 may grant variances for structure height, tree growth, or non-conforming use. |
Citation
Authority source
Iowa Code ch. 329 (Airport Zoning); §329.2 (purpose); §329.6 (zoning powers); §329.7 (relation to comprehensive zoning); §329.9 (procedure); §329.12 (board of adjustment).
§ Iowa Code §§329.1–329.20
Research notes
Federal conflict check enabled because state airport-hazard zoning defers to FAA Part 77 imaginary surfaces and FAA Determinations of No Hazard to Air Navigation. Iowa DOT publishes the Iowa Airport Land Use Guidebook to operationalize Ch. 329 at the local level. This is a procedural floor — cities are required to participate in airport-hazard zoning where the city contains or hosts a public-use airport, not a freestanding height ceiling. Counties' airport zoning runs on a parallel procedural track.