Cannabis & Marijuana Rental Rules in Iowa 2026

Landlord ban authority, possession and home-grow limits, medical patient housing rules, and federal Section 8 restrictions in Iowa.

CBD/Low-THC Effective 2017

Adult-use possession limit

Banned Home cultivation

No Medical patient housing protection

Federal baseline (uniform in Iowa): Cannabis remains a Schedule I controlled substance under 21 U.S.C. § 812(c) Schedule I(c)(10) regardless of Iowa's legalization status. HUD PIH Notice 2014-21 (re-issued PIH 2017-13) requires Public Housing Authorities to deny admission to public housing or HCV (Section 8) for any household member illegally using a controlled substance, including cannabis. Landlords may prohibit smoking of any substance as a private property interest in any state.

Iowa is one of the strictest cannabis states in the country, and that works in a landlord's favor. Recreational marijuana is illegal under Iowa Code Chapter 124, and the state's only legal channel is the narrow Medical Cannabidiol Act (Iowa Code Chapter 124E), which bars smokable flower and edibles and caps a patient at 4.5 grams of THC per 90 days. Because there is no legal recreational market, you are not navigating the kind of tenant-rights conflict landlords face in legalized states. Your authority to control smoking, odor, and cultivation on your property rests on ordinary lease terms, the Iowa Smokefree Air Act, and Chapter 562A. Federal housing rules add a further layer for any Section 8 or public housing unit.

Iowa Cannabis Legal Status

Iowa is classified as Low-THC / CBD Only (effective 2017). The governing statute is Iowa Code § 124E (Medical Cannabidiol Act, 2017).

Landlord Authority in Iowa

Cannabis is restricted in Iowa.

CBD products only (≤4.5g THC per 90 days). No smokable flower. Recreational use illegal.

Cannabis status in Iowa: illegal recreationally, narrow medical program

Recreational marijuana is illegal in Iowa. Cannabis is a Schedule I controlled substance under Iowa Code Chapter 124, and first-offense simple possession under Iowa Code 124.401 is a serious misdemeanor punishable by up to six months in county jail and a fine of up to $1,000. The only legal use is medical, under the Iowa Medical Cannabidiol Act (Chapter 124E). That program is deliberately limited: no smokable flower, no edibles, and a per-patient ceiling of 4.5 grams of THC over any 90-day period. The program has run with a small handful of manufacturers and dispensaries, though HF 990, signed by Gov. Reynolds, directs an expansion of dispensary access. For a landlord, the practical takeaway is that most cannabis activity on your property is unlawful conduct, not a protected right.

Can an Iowa landlord ban smoking and marijuana?

Yes. Iowa gives you clear authority to prohibit smoking of any kind, including marijuana. Under Iowa Code 142D.5 of the Iowa Smokefree Air Act, an owner, operator, or manager of an area that is otherwise exempt from the Act may declare the entire area a nonsmoking place. Private residences are otherwise exempt from the Act's public-place prohibitions (unless used as a child care or health care setting), so this provision is exactly how a landlord converts units and common areas to smoke-free. Nothing in the Iowa Uniform Residential Landlord and Tenant Law (Chapter 562A) prevents you from restricting smoking inside a unit. A well-drafted no-smoking clause reaches all combusted material, so it covers marijuana smoke the same way it covers tobacco, regardless of any medical card the tenant holds.

Lease clauses that actually hold up

Your protection is only as strong as your written lease. Include a clear no-smoking clause that defines smoking to cover all forms of combustion and vaping, and state that it applies inside the unit, on balconies and patios, and in common areas. Add a separate clause barring the possession, use, cultivation, or manufacture of any federally controlled substance, including marijuana, since that ties your remedy to conduct that remains unlawful under both state and federal law. A cultivation ban is worth spelling out on its own: home grows create moisture, mold, electrical load, and odor problems, and there is no legal home-grow allowance in Iowa to weigh against your ban. Because private residences fall outside the Smokefree Air Act's civil-penalty machinery, enforcement runs through your lease as a violation and cure or termination, not through the Act's fine schedule.

The Section 8 and public housing conflict

Federally assisted housing follows federal law, and federal law has not moved. Marijuana remains a Schedule I substance under the Controlled Substances Act. The Quality Housing and Work Responsibility Act of 1998 requires public housing authorities to deny admission to public housing and the Housing Choice Voucher (Section 8) program based on illegal use of a federally controlled substance. HUD's 2011 guidance draws a firm line: admission of medical marijuana users is prohibited, but a PHA has case-by-case discretion over whether to terminate an existing tenant who uses medical marijuana. So a medical card does not create a right to cannabis in assisted housing. Proposed federal legislation (the Marijuana in Federally Assisted Housing Parity Act) would change this, but it has not been enacted, so the prohibition stands.

Practical enforcement for Iowa landlords

Screen and document like the conduct is unlawful, because it is. Put your no-smoking and no-controlled-substance clauses in every lease, note them at signing, and post smoke-free status where required. When you get an odor or cultivation complaint, log dates, photos, and any physical evidence, then proceed under Chapter 562A's notice-and-cure or termination process rather than self-help. Note that the Smokefree Air Act's civil penalties under 142D.9 (up to $100 for a first violation, $200 for a second within a year, and up to $500 for each further violation) apply to regulated public places, not to a tenant smoking inside a private unit; your lease is the enforcement tool there. For any federally assisted unit, coordinate with your PHA before acting, since admission and termination decisions are governed by federal rules and the PHA's own policy.

Medical Patient Housing Rules in Iowa

Iowa does not have statewide medical patient housing protection.

Medical cannabis patients in Iowa may be treated identically to recreational users by landlords. There is no state-law anti-discrimination requirement; the federal Schedule I framework controls. Some local jurisdictions may have ordinances providing limited protection, check the city or county where the rental unit is located.

Section 8 / HCV in Iowa, The Federal Trap

HUD PIH 2014-21 mandatory denial applies in Iowa. Even though Iowa has restricted cannabis, a Public Housing Authority in Iowa must deny admission to any household where a member illegally uses a controlled substance, and cannabis remains federal-illegal. Existing Section 8 tenants who use cannabis may face termination at PHA discretion, though termination is not mandatory like denial is.

The practical impact: a tenant holding a Housing Choice Voucher who tests positive for cannabis or self-discloses use during recertification can lose their voucher in Iowa, regardless of any state cannabis legalization or medical card status. This is the single most common point of confusion for tenants in adult-use states.

Cannabis Rental Compliance in Major Iowa Cities

City-level landlord risk profiles often track cannabis-related lease enforcement. View the eviction-risk and tenant-law profile for the largest Iowa rental markets:

Des Moines Cedar Rapids Davenport Sioux City Iowa City Ankeny

Sources & Methodology

Federal: 21 U.S.C. § 812 (Controlled Substances Act, Schedule I); HUD Public Housing Occupancy Notice PIH 2014-21 (re-issued PIH 2017-13); Sessions Memorandum (Jan 4, 2018).
Iowa cannabis statute: Iowa Code § 124E (Medical Cannabidiol Act, 2017).
Landlord ban authority: CBD products only (≤4.5g THC per 90 days). No smokable flower. Recreational use illegal.
Medical patient housing protection: Coded "No" for Iowa based on the cited statute.

Related Guides for Iowa Landlords

← Iowa Eviction Risk Overview Lawful Eviction Reasons Section 8 / HCV Landlord Guide Landlord Insurance & Hazards Fair Housing Protected Classes Tenant Rights Summary

This page summarizes Iowa Code Chapter 124 (controlled substances), Chapter 124E (Medical Cannabidiol Act), Chapter 142D (Smokefree Air Act), and Chapter 562A (Uniform Residential Landlord and Tenant Law), along with the federal Controlled Substances Act, the Quality Housing and Work Responsibility Act of 1998, and HUD's 2011 marijuana guidance. It is general information for Iowa landlords, not legal advice. Statutes and PHA policies change; confirm current text with the Iowa Legislature and your public housing authority, and consult a licensed Iowa attorney before acting on a specific tenancy.

Frequently Asked Questions

Is recreational marijuana legal in Iowa?

No. Recreational marijuana is illegal in Iowa. Cannabis is a Schedule I controlled substance under Iowa Code Chapter 124, and first-offense simple possession under Iowa Code 124.401 is a serious misdemeanor punishable by up to six months in jail and a fine of up to $1,000. Only a narrow medical program exists.

Can an Iowa landlord ban marijuana smoking even for a medical patient?

Yes. Iowa Code 142D.5 lets a landlord declare a rental unit and property a nonsmoking place, and Chapter 562A does not bar smoking restrictions. A no-smoking clause that covers all combusted material reaches marijuana smoke regardless of a tenant's medical cannabidiol card. Iowa's medical program also does not permit smokable flower.

How limited is Iowa's medical cannabis program?

Very. The Iowa Medical Cannabidiol Act (Chapter 124E) allows no smokable flower and no edibles, and caps each patient at 4.5 grams of THC per 90-day period. It has operated through a small number of manufacturers and dispensaries, with HF 990 directing an expansion of dispensary access.

Can a tenant grow marijuana in an Iowa rental?

No. There is no legal home-grow allowance in Iowa, so cultivation is unlawful under Iowa Code Chapter 124. Landlords should still include an explicit cultivation ban in the lease, because home grows create mold, moisture, electrical, and odor risks you can then enforce against directly.

Does a medical card protect a tenant in Section 8 or public housing?

No. Marijuana remains illegal under the federal Controlled Substances Act. Under the Quality Housing and Work Responsibility Act of 1998, PHAs must deny admission to public housing and the Housing Choice Voucher program for illegal controlled-substance use. HUD's 2011 guidance gives PHAs only case-by-case discretion over terminating existing tenants, not a right for card holders.

What lease language should an Iowa landlord use?

Use a no-smoking clause defining smoking to include all combustion and vaping across the unit, balconies, and common areas, plus a separate clause barring possession, use, cultivation, or manufacture of any federally controlled substance including marijuana. Because private residences sit outside the Smokefree Air Act's penalty schedule, enforce through Chapter 562A notice-and-cure or termination.

Federal authority: 21 U.S.C. § 812; HUD PIH 2014-21. State authority: Iowa Code § 124E (Medical Cannabidiol Act, 2017). Last updated October 24, 2026. For informational purposes only, not legal advice. Cannabis law is rapidly evolving and federal/state conflict creates significant compliance risk; consult a licensed Iowa attorney before making a lease, screening, or eviction decision involving cannabis.