Boulder, MT Rent Increase Laws 2026

Montana has no rent cap but Landlords must give 30 days' notice before raising rent. Wrong notice = void increase.

In Montana, there is no statewide rent cap. Landlords must provide 30-day written notice before any increase takes effect. An increase without proper notice is void.

Key Takeaways — Boulder Rent Increase Laws

Notice required: 30 days before increase
Wrong notice: Entire increase is void

Rent Increase Laws in Boulder

Boulder landlords must follow Montana state law on rent increase laws. Understanding the specific rules, deadlines, and penalties can prevent costly violations.

30 days

notice required

Penalty Warning

Violate Montana rent increase laws rules in Boulder and you could have your increase voided. At Boulder's median rent of $1,404/month, even a single violation adds up fast.

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More Boulder Landlord Laws

Security Deposit Laws → Eviction Process & Notice Requirements → Landlord Entry & Access Rules → Maintenance & Habitability Standards → Late Fee Limits → Lease Termination & Renewal → Fair Housing Protections → Tenant Screening Rules → Required Landlord Disclosures → Rent Control → Property Registration Requirements →

Rent Increase Laws in Nearby Cities

Own properties in multiple cities? Rules may differ locally:

Whitehall, MT
Pop. 1,080 Helena, MT
Pop. 34,464 East Helena, MT
Pop. 2,138 Townsend, MT
Pop. 2,133 Deer Lodge, MT
Pop. 3,030

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How we researched this page: Rent increase laws rules are based on Montana state statutes. Rent data comes from HUD Fair Market Rents (FY2026) for Jefferson County. Last updated: August 2026.

RA

Reviewed by Rachid Abadli

Founder & CEO, LeaseBase · Sacramento landlord · Self-managing since 2019

LeaseBase is a property management platform — not a law firm. Consult an attorney for legal advice specific to your situation.