Maine Rent Increase Laws: Advanced Notice Requirements
Understand Maine rent increase laws, including the 45-day and 75-day notice periods, rules for month-to-month tenancies, and local rent control in Portland.
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This content is for general informational and educational purposes only. It does not constitute legal advice and should not be relied upon as such. Laws change frequently — always verify current regulations and consult a licensed attorney in your jurisdiction for advice specific to your situation. Landager is a property management platform, not a law firm.Information last verified: May 2026.
In accordance with 14 MRS § 6015 (effective October 25, 2023), Maine landlords must adhere to strict tiered notice requirements when increasing residential rent. Unlike states where 30 days is the standard warning for a rent hike, Maine law mandates a minimum 45-day, 75-day, or 90-day notice period depending on the magnitude of the increase and the property's location.
Official Law Citation: Maine Revised Statutes, Title 14, § 6015 (Notice of Rent Increase).
Fixed-Term Leases
If a tenant is currently bound by an active, fixed-term lease (e.g., a one-year agreement), the landlord cannot increase the rent during the term of that lease. The monthly rate stated in the contract is locked until the lease naturally expires.
To raise the rent upon renewal, landlords must present the new terms to the tenant prior to the renewal date. If the lease converts to a month-to-month tenancy, the required statutory notice periods immediately apply.
Month-to-Month Tenancy Notices
For "Tenancies at Will" (month-to-month renters with no long-term lease), Maine enforces a dual-tier notice system based entirely on the size of the proposed rent increase, unless local ordinances require more.
Increases Under 10%
If a landlord is proposing a rent increase that is less than 10% of the tenant's current base rent, they must provide at least 45 days' advance written notice.
Increases of 10% or More
If a landlord proposes to increase the rent by 10% or more, they must provide at least 75 days' advance written notice.
Exemptions: Per 14 MRS § 6015(2), the 75-day notice requirement for increases of 10% or more does NOT apply to rental housing subject to:
- Affordability deed restrictions;
- Restrictions due to landlord participation in government subsidy programs; or
- Restrictions due to tenant participation in government subsidy programs.
Crucial Caveat: This 10% threshold is cumulative over any 12-month period. The 75-day notice must be provided prior to the specific increase that brings the cumulative total to 10% or more. For example, if a landlord raises the rent by 5% in March and another 5% in September, that second increase demands 75 days' warning because the cumulative annual increase has reached the 10% threshold.
Notice Format
Maine law specifies that the written notice must explicitly state:
- The new total rent amount.
- The exact effective date of the increase. A text message or an email (unless explicitly agreed to as a legal form of notice in a prior written lease) may not hold up if challenged as improper notice.
Local Rent Control: The Portland Exception
While the state of Maine does not restrict how much a landlord can increase the rent, municipalities are legally allowed to enact their own rent control policies.
The most prominent example is Portland, Maine. Under Portland's municipal Rent Control Ordinance (Portland Code Ch. 6, Art. X):
- Notice Period: Notwithstanding state law, landlords in Portland must provide at least 90 days' written notice for any rent increase (§ 6-232(f)).
- Rent Cap: Annual rent increases are strictly capped at 70% of the change in the Consumer Price Index (CPI-U) for the Greater Boston Metro Area (§ 6-234).
- Landlords must register their rental units with the city to legally implement any rent increases.
- Even between tenancies (when a tenant moves out), landlords are limited in how much they can raise the rent for the incoming tenant.
Retaliation Prohibitions
A landlord in Maine cannot legally raise the rent to punish a tenant for exercising their rights. Under 14 MRS § 6014, a landlord may not increase rent in retaliation for a tenant asserting rights, such as requesting repairs under the warranty of habitability.
Presumption of Retaliation: In any action of forcible entry and detainer (eviction), there is a rebuttable presumption that the action was taken in retaliation if, within 6 months prior to the commencement of the action, the tenant asserted rights under § 6015 (rent increase notice), § 6021 (habitability), or filed a complaint with a code enforcement officer (§ 6014(3)).
Back to Maine Landlord-Tenant Laws Overview.
Frequently Asked Questions
▶What are the Maine rent increase laws and caps for landlords?
Maine has specific rules governing when and how landlords can increase rent. During a fixed-term lease, rent generally cannot be increased unless the lease explicitly allows it. For month-to-month tenancies, landlords must provide proper written notice before an increase takes effect. Check whether Maine has any local rent control ordinances that may impose additional caps or requirements.
▶What are the Maine landlord-tenant laws every property owner should know?
Maine's landlord-tenant laws strive to balance the property rights of landlords with concrete habitability and transparency protections for tenants. While the state statutes apply broadly, landlords must also be acutely aware of local ordinances in municipalities like Portland, which enforce stricter rent control and eviction guardrails. This guide covers the essential compliance requirements for property owners and landlords.
Read the complete guide▶What is the Maine eviction process and how long does it take?
The Maine eviction process requires landlords to provide written notice to tenants before filing a court action. The type and length of notice depends on the reason for eviction — typically shorter for non-payment of rent and longer for lease violations or no-fault terminations. Self-help evictions (changing locks, removing belongings, shutting off utilities) are illegal in Maine. The full court process varies but typically takes several weeks.
Read the complete guide▶What are the Maine security deposit rules and return deadlines?
Maine has specific rules governing how much landlords can charge for security deposits, how deposits must be held, and the deadline for returning deposits after a tenant moves out. Landlords must provide an itemized statement of any deductions made from the deposit. Failure to comply with deposit return deadlines can result in penalties and the forfeiture of the landlord's right to claim deductions.
Read the complete guide▶What is the grace period for late rent in Maine?
Maine has specific rules regarding grace periods for late rent and the amount that can be charged as a late fee. Late fee provisions must be stated in the lease agreement, and fees must be reasonable. Check Maine state law and any applicable local ordinances for the exact grace period and late fee limits that apply to your rental property.
Read the complete guide▶What disclosures must Maine landlords provide to tenants?
Maine landlords must provide certain disclosures to tenants before or at the time of lease signing. Common required disclosures include lead-based paint hazards (for pre-1978 buildings, a federal requirement), the identity of the landlord or property manager, and any known material defects in the property. Additional state-specific disclosures may include flood risk, mold hazards, and environmental conditions.
Read the complete guide▶What are the Maine lease requirements for rental properties?
Maine recognizes both written and oral leases, though written leases are strongly recommended for terms longer than one year. Lease agreements should include the rent amount, payment due date, security deposit terms, maintenance responsibilities, and rules regarding entry, pets, and subletting. Certain lease clauses that waive tenant statutory rights may be void and unenforceable under Maine law.
Read the complete guide▶What are Maine landlord maintenance obligations and habitability standards?
Maine landlords must maintain rental properties in a condition that is fit for habitation and complies with applicable building, housing, and health codes. This includes maintaining structural integrity, plumbing, heating and cooling systems, electrical systems, and pest control. Tenants typically have the right to request repairs in writing, and if repairs are not made within a reasonable time, tenants may have legal remedies available.
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