✓ Law Verified June 2026
This guide explains idaho rent increase laws in plain English — whether there is a cap on how much your landlord can raise your rent, how much notice they must give, which Idaho cities have local rent control, and what to do if an increase looks illegal. All figures are from Idaho law, verified as of June 2026.
In This Idaho Guide:
Idaho Rent Increase Rules at a Glance
| Statewide rent cap | NO. Idaho has no statewide rent cap. There is no limit on how much a landlord can raise rent. Idaho Code § 55-307 explicitly prohibits rent control and bars local governments from regulating rent on private residential property. |
| Notice required before increase | For month-to-month tenancies, Idaho Code § 55-307 requires landlords to give at least 15 days written notice before the end of the current month for any change in lease terms. However, for residential properties specifically, the same statute requires at least 30 days advance written notice of any rent increase or nonrenewal. Fixed-term leases: rent cannot be increased until the lease term expires, unless the lease itself contains a provision allowing mid-lease increases. |
| How often rent can be raised | No statutory limit. Idaho law does not restrict how often a landlord may raise rent, as long as proper 30-day written notice is given each time for residential tenancies and the increase does not occur during a fixed-term lease unless the lease allows it. |
| During a fixed-term lease | NO — a landlord generally cannot raise rent during a fixed-term lease in Idaho unless the lease agreement contains a specific clause permitting mid-lease rent adjustments. If no such clause exists, the rent amount is locked for the duration of the lease term. Any increase must wait until the lease expires or is up for renewal, at which point at least 30 days written notice is required. |
Retaliatory increases: Idaho has limited statutory protection against retaliatory rent increases for general residential tenancies. Idaho Code § 55-2015 explicitly prohibits retaliatory conduct by landlords in mobile home parks. For general residential rentals, Idaho does not have a standalone anti-retaliation statute as strong as many other states.
However, some Idaho courts have recognized retaliatory eviction defenses, and if a landlord raises rent within a short period after a tenant files a habitability complaint or exercises a legal right, the tenant may be able to argue retaliation.
Tenants who believe they are facing a retaliatory rent increase should document the timeline and contact the Idaho Attorney General’s Consumer Protection Division or Idaho Legal Aid Services.
Idaho Cities With Local Rent Control
NONE. Idaho Code § 55-307 preempts all local rent control. No city or county in Idaho may enact, maintain, or enforce any ordinance or resolution that regulates rent, fees, or deposits charged for leasing private residential property. This preemption was expanded by House Bill 545 (2024), which also overrode a Boise ordinance related to source-of-income discrimination.
Exempt properties: Not applicable. Because Idaho has no rent control or rent cap of any kind, there are no exemption categories. All rental property types — including new construction, single-family homes, condos, and multi-family buildings — are subject to the same rules: no cap on the amount, 30 days notice required for residential rent increases.
State preemption: YES. Idaho fully preempts local rent control. Idaho Code § 55-307 prohibits any local governmental unit from enacting, maintaining, or enforcing ordinances that regulate rent, fees, or deposits on private residential property. This was strengthened by HB 545 (signed 2024), which also prohibited local governments from mandating landlord participation in optional federal housing assistance programs such as Section 8 vouchers.
What to Do If Your Rent Increase Is Illegal
If you believe a rent increase is illegal in Idaho — for example, if it was imposed during a fixed-term lease without a lease clause permitting it, or if you received less than 30 days written notice for a residential rental — you may be able to take the following steps: (1) Review your lease carefully to confirm whether a mid-lease increase clause exists.
(2) Send your landlord a written letter citing Idaho Code § 55-307 and explaining why the increase does not comply with Idaho law.
📨 Get Free Tenant Rights Guides Alerts
Free · No spam · Unsubscribe anytime
(3) Contact the Idaho Attorney General’s Consumer Protection Division to file a complaint. (4) Contact Idaho Legal Aid Services (idaholegalaid.org) for free legal assistance. (5) You may be able to file a claim in Idaho small claims court (magistrate division) if you suffered financial damages from an unlawful increase.
(6) If you believe the increase is retaliatory, document the timeline between your complaint and the increase and present this evidence to your attorney or the court.
Other Idaho rent rules: Idaho is one of the most landlord-friendly states in the country for rent increases. There is no cap, no frequency limit, and the state actively preempts any local attempt to regulate rents. The only tenant protections are the 30-day written notice requirement for residential rent increases (Idaho Code § 55-307), the inability to raise rent mid-lease without a lease clause, and limited retaliatory protections.
Idaho’s Residential Landlord and Tenant Act is found in Idaho Code Title 6, Chapter 3 (for eviction procedures) and Title 55, Chapter 3 (for lease terms and notice).
Mobile home park tenants have stronger retaliatory protections under Idaho Code § 55-2015 than general residential tenants. Tenants should also be aware that Idaho law requires landlords to return security deposits within 21 days of lease termination (or up to 30 days if agreed upon), per Idaho Code § 6-321.
You May Also Like
Official Idaho Sources & Resources
- Idaho Attorney General: https://www.ag.idaho.gov/content/uploads/2025/08/LandlordTenant.pdf
- Idaho Rent Statute: https://legislature.idaho.gov/statutesrules/idstat/Title55/T55CH3/SECT55-307/
- U.S. Department of Housing and Urban Development: hud.gov
- Cornell Legal Information Institute: law.cornell.edu/wex
Understanding Idaho Rent Increase Laws
Whether a Idaho rent increase is legal depends on the cap (if any), the notice given, and whether the increase is retaliatory. Idaho rent increase laws protect tenants from surprise hikes by requiring a minimum notice period before any increase takes effect.
If you believe a Idaho rent increase violates these rules, document the notice you received, check the math against the cap, and contact your local housing authority or legal-aid office.
Knowing the Idaho rent increase rules before your lease renews puts you in a much stronger position.
This Idaho rent increase guide was last verified against official sources in June 2026. Rent caps change — verify with your state or a local legal-aid office.
More Idaho Tenant Rights Guides
- Idaho Tenant Rights
- Idaho Eviction Process
- Idaho Security Deposit Law
- Idaho Repairs & Habitability
- Breaking a Lease in Idaho
- Eviction Timeline Calculator
- All 50 States
Disclaimer: This guide is informational only and is not legal advice. Landlord-tenant laws change and vary by city and county within a state. Verify current rules with your state, your local court, or a free legal-aid office before acting. If you are facing eviction, contact a local tenant attorney or legal-aid organization right away.