Cannabis & Marijuana Rental Rules in Maryland 2026

Maryland legalized adult-use cannabis on July 1, 2023 under the Cannabis Reform Act, after voters approved it on the 2022 ballot. Adults 21 and older may possess a personal use amount of up to 1.5 ounces of flower, 12 grams of concentrate, or 750 mg of THC, and a household may grow up to two plants. None of that strips a landlord of control over their own property. Legalization decriminalized personal conduct; it did not create a tenant right to smoke or cultivate inside a rental. What a tenant may do in your building is governed by the lease and by local ordinance, not by the fact that cannabis is now legal statewide.

The practical takeaway for owners: Maryland has no statewide statute that either bans or requires cannabis use in private rental units, so your lease is the controlling document. Draft it deliberately. And if any part of your portfolio touches federal money, the calculus changes entirely, because cannabis remains illegal under federal law.

Maryland Cannabis Legal Status

Maryland is classified as Adult-Use Recreational Legal (effective 2023). The governing statute is Md. Code, Alc. Bev. & Cannabis § 36-401 et seq. (Question 4, 2022).

Landlord Authority in Maryland

Maryland's cannabis status and what it does not give tenants

Maryland is a recreational and medical state. Adult-use possession and home cultivation are legal for those 21 and older, and a separate medical program run by the Maryland Cannabis Administration serves registered patients. Possession above the personal use amount but at or below 2.5 ounces (the civil use amount) is a civil, not criminal, matter under the Criminal Law Article.

What legalization did not do is override private property rights. A landlord is free to prohibit cannabis smoking, vaping, and cultivation on the premises through a lease term, just as with tobacco. No Maryland law compels an owner to permit on-site cannabis use, and a tenant who smokes in violation of a clear lease clause is in breach the same as any other lease violation. Legalization changed the state's criminal posture toward the individual; it did not rewrite the landlord-tenant contract.

Banning smoking: your lease and the Clean Indoor Air Act

Because there is no single statewide rule for private units, your written lease is the controlling instrument. A smoke-free clause should name cannabis explicitly (smoke and vapor alike), rather than relying on a generic tobacco clause a tenant may argue does not reach cannabis. Tie it to your nuisance and quiet enjoyment provisions so that smoke drifting into a neighboring unit is itself an enforceable breach.

State law already backstops you in shared and public areas. Maryland's Clean Indoor Air Act (Health-General Article, Title 24, Subtitle 5), enacted in 2007 and amended in 2024 to add vaping and cannabis, prohibits smoking and vaping in indoor areas open to the public, which reaches lobbies, hallways, and other common spaces in a multifamily building. Separately, smoking cannabis in any public place or motor vehicle is a civil offense, carrying a fine of up to $50 for a first finding and up to $150 for a repeat. Those public-space rules do the work outside the unit; the lease has to do the work inside it. Local county and city ordinances can add restrictions, so check the jurisdiction where the property sits.

Cultivation: the two-plant household cap and control in a rental

Home cultivation in Maryland is capped at two plants per household, regardless of how many adults live there. The limit is per residence, not per person, so a four-tenant apartment still tops out at two plants. Registered medical patients may grow two additional plants, for a maximum of four. Plants must be kept out of public view and secured against access by anyone under 21.

State law setting a legal ceiling does not obligate a landlord to allow any cultivation at all. A tenant needs the lease to permit growing, or the owner's written permission; absent that, an owner may prohibit cultivation outright. Cultivation carries real property risks worth addressing in the lease: elevated humidity and mold, altered electrical loads, and odor complaints from neighbors. A clean approach is to bar cultivation by lease term and treat any grow operation, even a compliant two-plant one, as a breach unless you have specifically authorized it in writing.

The federal conflict: Section 8, public housing, and HUD money

This is where Maryland legalization stops mattering. Cannabis remains a Schedule I controlled substance under the federal Controlled Substances Act, so any property touching federal housing dollars operates under federal, not state, rules. Federal law bars a public housing authority from admitting a household when a member is currently using an illegal drug, and marijuana counts, medical registration included. A cannabis-using applicant can be denied a voucher or public housing unit regardless of Maryland law.

For units in public housing, HUD's smoke-free rule (effective July 30, 2018) already prohibits smoking indoors and within 25 feet of buildings, and marijuana is barred on top of that as a federally illegal substance. For Section 8 (tenant-based vouchers and project-based units), the smoke-free rule does not directly apply, but the federal drug bar does: cannabis use is prohibited at HUD-assisted properties. For a tenant already receiving assistance, a housing authority has discretion over whether to terminate for marijuana use, but the exposure is real, and repeated violations can end in eviction and loss of the subsidy. If you own assisted units, your house rules must reflect the federal baseline, not the more permissive state one.

Drafting and enforcement checklist for Maryland owners

Put the controls in writing before a dispute arises. A defensible Maryland lease should: (1) state a smoke-free policy that names cannabis smoke and vapor specifically; (2) address cultivation directly, either prohibiting it or conditioning it on written permission; (3) connect cannabis violations to your nuisance and quiet enjoyment clauses so odor and smoke drift are actionable; and (4) for any federally-assisted unit, incorporate the federal prohibition and the applicable HUD smoke-free terms.

On enforcement, document complaints, dates, and any inspection findings, and follow Maryland's ordinary breach-of-lease and eviction procedures. A clear lease term is what turns a legal-under-state-law activity into an enforceable violation on your property. The mistake to avoid is assuming legalization did the drafting for you: it did the opposite, moving the decision squarely into your lease.

Medical Patient Housing Rules in Maryland

• Federal subsidy override. Anti-discrimination protection does NOT apply to federally subsidized housing, Section 8, public housing, project-based assistance, or any program receiving federal funds. HUD PIH 2014-21 controls.
• Smoking ban still permissible. Most state medical-patient protections still allow landlords to prohibit smoking on the premises. Patients must use edibles, tinctures, or vaporizers in non-smoking settings.
• On-premises consumption limits. Some statutes restrict the protection to off-premises use only, leaving on-premises consumption subject to the lease.

Section 8 / HCV in Maryland, The Federal Trap

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 Maryland, 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 Maryland Cities

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

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).
• Maryland cannabis statute: Md. Code, Alc. Bev. & Cannabis § 36-401 et seq. (Question 4, 2022).
• Landlord ban authority: Up to 2 plants per household for personal use. Landlord may ban smoking and cultivation in lease. Medical cardholders protected under Md. Code Health-Gen. § 13-3313.
• Medical patient housing protection: Coded "Yes" for Maryland based on the cited statute.

Related Guides for Maryland Landlords

This guide reflects Maryland's Cannabis Reform Act (adult-use legalization effective July 1, 2023), the Clean Indoor Air Act (Health-General Article, Title 24, Subtitle 5), the Criminal Law Article's cannabis provisions, and the federal Controlled Substances Act and HUD's smoke-free public housing rule (effective July 30, 2018). It is written for Maryland landlords and reflects law current as of 2026. Cannabis law and HUD enforcement policy change, and local county and city ordinances vary. This is general information, not legal advice; confirm current statute and consult a Maryland landlord-tenant attorney before drafting or enforcing lease terms.

Frequently Asked Questions

Can a Maryland landlord ban a tenant from smoking cannabis in their unit?

Yes. Maryland has no statewide law requiring landlords to allow cannabis use, and legalization did not create a tenant right to smoke in a rental. A landlord may prohibit cannabis smoking and vaping through a lease term. The clause should name cannabis specifically rather than relying on a generic tobacco provision.

How many cannabis plants can a tenant legally grow in Maryland?

State law caps home cultivation at two plants per household, regardless of how many adults live there. Registered medical patients may grow two more, for a maximum of four. Plants must be out of public view and secured from anyone under 21. But a legal ceiling is not a right against the landlord: an owner may prohibit cultivation in the lease entirely.

Does Maryland law let tenants smoke cannabis anywhere they want?

No. Smoking cannabis in any public place or motor vehicle is a civil offense, with a fine up to $50 for a first finding and up to $150 for a repeat. The Clean Indoor Air Act (Health-General Article, Title 24, Subtitle 5) also bars smoking and vaping in indoor public and common areas, which covers building lobbies and hallways. Inside a private unit, the lease controls.

Can Section 8 or public-housing tenants use cannabis in Maryland?

No. Cannabis remains illegal under federal law as a Schedule I substance, so it is prohibited at HUD-assisted properties despite Maryland legalization. A public housing authority must deny admission to a household with a current illegal-drug user, marijuana included, and medical registration does not help. For existing tenants, the authority has discretion whether to terminate, but repeated violations can lead to eviction and loss of assistance.

What is the difference between the personal use amount and the civil use amount?

The personal use amount that adults 21+ may lawfully possess is up to 1.5 ounces of flower, 12 grams of concentrate, or 750 mg of THC. Possession above that but at or below 2.5 ounces (the civil use amount) is treated as a civil matter rather than a crime under the Criminal Law Article. Neither threshold gives a tenant a right to use cannabis on rental property against the lease.

Should a Maryland lease treat cannabis cultivation as a lease violation?

It can, and often should. Even a compliant two-plant grow raises humidity, mold, electrical-load, and odor concerns. A common approach is to bar cultivation by lease term and treat any unauthorized grow as a breach, allowing it only with the owner's written permission. Tie cannabis smoke and odor to the nuisance and quiet-enjoyment clauses so drift into neighboring units is enforceable.

Federal authority: 21 U.S.C. § 812; HUD PIH 2014-21. State authority: Md. Code, Alc. Bev. & Cannabis § 36-401 et seq. (Question 4, 2022). 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 Maryland attorney before making a lease, screening, or eviction decision involving cannabis.