Quick AnswerThis checklist covers the lease disclosures a Montana landlord must provide in 2026 under the Montana Residential Landlord and Tenant Act (Mont. Code Title 70), plus the federal lead-based paint disclosure for pre-1978 housing. Getting them right at signing avoids penalties and keeps the lease enforceable.
Montana landlords must put certain disclosures in front of a tenant at or before signing — miss one and the lease can be weakened or penalized. Working from the Montana Residential Landlord and Tenant Act (Mont, this guide details every required Montana disclosure, its source, and its consequence. For everything else a lease needs, read what a Montana lease must include.

Which disclosures must a Montana lease include?

Montana landlord-tenant law is governed by the Montana Residential Landlord and Tenant Act (Mont. Code Title 70). The core disclosures a Montana landlord must give at or around lease signing:

DisclosureAuthorityApplies To
Owner/manager identityMont. Code § 70-24-301Every lease
Known moldMont. Code § 70-16-703When the landlord knows of mold
Lead-based paint hazard + EPA pamphletTitle X (federal)Housing built before 1978

The main Montana lease disclosures

Owner/manager identity (Mont. Code § 70-24-301): the landlord must disclose the person authorized to manage the premises and the owner or agent for service and notices

Additional Montana disclosures

Known mold (Mont. Code § 70-16-703): if the landlord knows mold is present, it must be disclosed before or upon entering the lease; a signed disclosure gives liability protection

Federal lead-based paint disclosure

One disclosure applies in every state, Montana included: for housing built before 1978, federal law (Title X; 42 U.S.C. § 4852d) requires the landlord to give a signed lead-warning disclosure, reveal any known lead hazards, hand over any available records, and provide the EPA pamphlet Protect Your Family From Lead in Your Home. Violations can bring civil — and in egregious cases criminal — penalties.

What happens if a Montana landlord skips a required disclosure?

Consequences depend on the disclosure:

  • A missed 30-day (or 10-day, no-deductions) deposit return exposes the landlord to the wrongfully withheld amount (§ 70-25-202).
  • An undisclosed known mold condition forfeits the liability protection the disclosure provides (§ 70-16-703).
  • A federal lead-paint violation carries civil and, in egregious cases, criminal penalties plus tenant damages.

For the full set of Montana lease rules, see What Must a Montana Lease Agreement Include. Managing rentals in more than one state? Compare Montana's list with our California and Washington disclosure checklists, and see the baseline in What Every Residential Lease Agreement Must Include.

A compliant Montana lease includes every disclosure the state requires — owner/manager identity, known mold — plus the federal lead-based paint disclosure for pre-1978 housing. LeaseHelper's generator adds the Montana disclosures that apply to each lease automatically, so none are overlooked.

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Frequently asked questions

What disclosures are required in a Montana lease?

A Montana lease must include owner/manager identity; known mold (Mont. Code § 70-24-301; Mont. Code § 70-16-703), plus the federal lead-based paint disclosure for pre-1978 housing.

Does Montana require a owner/manager identity disclosure?

Yes. the landlord must disclose the person authorized to manage the premises and the owner or agent for service and notices (Mont. Code § 70-24-301).

Does Montana require a known mold disclosure?

Yes. if the landlord knows mold is present, it must be disclosed before or upon entering the lease; a signed disclosure gives liability protection (Mont. Code § 70-16-703).

Does Montana require a lead-paint disclosure?

Yes, for pre-1978 housing. This is a federal requirement: the signed lead-warning disclosure, known records, and the EPA pamphlet.

Official sources

Primary statutes and official government references for this guide. Statutes change — always confirm against the current official text before you act.

This guide offers general information about Montana lease disclosure requirements and landlord-tenant law and is not legal advice. Statutes change and city or county ordinances can add requirements, so confirm the current rules before you act — and for anything complicated, talk to a licensed Montana attorney. Last reviewed: July 2, 2026.