Iowa Code §414.28 / §335.30 — Manufactured Home Zoning Parity Mandate (IA)
Tracked preemption from the Iowa overlay bundle.
Overview
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Effective
1986-07-01
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 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)Iowa Code Ch. 461A + 571 IAC 13 — Sovereign Lands Construction Permits
Trigger predicate
When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.
project.is_manufactured_home == TruePreempted fields
4 fields on the base district schema are rewritten when the trigger fires.
| Field | Op | Value | Note |
|---|---|---|---|
base_districts[category=res_sf].allowed_uses | add | manufactured_home | Cities (§414.28) and counties (§335.30) SHALL NOT disallow the plans/specifications of a residential structure solely because it is a manufactured home built under 42 U.S.C. §5403 (HUD code). |
design_standards.foundation_system | permit | pier_footing_compatible_with_site | Permanent foundation may be a pier-footing system designed and constructed compatibly with the structure and site conditions. Visual-compatibility standards may be imposed only on units outside a manufactured-home community / mobile-home park. |
design_standards.setback_sqft_neutral | require | same_as_site_built_single_family | Setback, minimum square footage, and other standards must apply uniformly to site-built single-family dwellings on the same lot. §335.30 additionally bars counties from mandating width standards for a single modular/manufactured home on agriculturally-zoned land. |
zoning_ordinance.land_leased_mhc_disallowance | waive | section_414_28A_335_30A | Cities/counties cannot adopt zoning that disallows or makes infeasible plans/specs of land-leased manufactured-home communities merely because housing will be manufactured. |
Citation
Authority source
Iowa Code §414.28 (Cities — Manufactured/Modular Homes); §414.28A (Land-Leased Communities); §335.30 (Counties — Manufactured/Modular Homes); §335.30A (Counties — Land-Leased Communities)
§ §414.28, §414.28A, §335.30, §335.30A
Research notes
Use-class + standards preemption. Federal conflict check enabled because the statute references 42 U.S.C. §5403 (HUD National Manufactured Housing Construction and Safety Standards Act) — state parity mandate sits atop federal construction-standards preemption. Statewide floor: parity with site-built homes, subject to neutral dimensional standards. The visual-compatibility carveout is the principal point of city-level interpretation.