There is no legal cap on how much a landlord can raise rent in Colorado. No state statute or local ordinance sets a maximum dollar amount or percentage, and landlords are free to adjust rent to whatever the market supports. What Colorado law does control is the timing and manner of increases: rent can only go up once every 12 months, tenants without a written lease are entitled to 60 days’ written notice, and increases tied to retaliation or discrimination are illegal regardless of size.
Once Every 12 Months, No Matter What
The real ceiling in Colorado is a frequency rule, not a dollar rule. Under C.R.S. § 38-12-702, a landlord cannot increase rent more than once in any 12-month period of consecutive occupancy. That applies to every residential tenancy in the state: written leases, oral agreements, month-to-month arrangements, and open-ended tenancies alike.1Justia. Colorado Revised Statutes Section 38-12-702 – Limit on Frequency of Residential Rent Increases
The practical effect is meaningful. A landlord who raised your rent eight months ago cannot raise it again now, even by a small amount. If you receive a second increase notice inside a 12-month window, that second notice is not enforceable.
When Your Landlord Can Raise Rent
Your lease type determines the earliest moment a rent increase can happen.
If you signed a fixed-term lease, such as a one-year agreement, the landlord generally cannot raise rent during that term. The rent stated in the lease is the rent for the full period.2Division of Housing. Rent Increases When the term ends, the landlord can propose a new rate for a renewal. If you stay on without signing a new lease, you typically roll into a month-to-month tenancy, and the rules for that arrangement take over.
Month-to-month tenancies give the landlord more room. With no locked-in end date, the landlord can raise rent at any point, subject to the once-per-year cap and the written notice requirement below.
The 60-Day Written Notice Requirement
For residential tenancies without a written lease, Colorado requires the landlord to give at least 60 days’ written notice before any rent increase takes effect. The notice must state the new rent amount and the effective date. The statute also blocks a common workaround: a landlord cannot terminate a residential tenancy if the primary purpose is to raise rent in a way that dodges the 60-day requirement.3Justia. Colorado Revised Statutes Section 38-12-701
If you have a written lease, notice for changes at renewal is typically governed by the lease itself. Check your agreement for a clause specifying how far in advance the landlord must propose new terms. Many written leases include their own 30- or 60-day provision.
Oral notice does not count. If your landlord tells you in conversation that rent is going up but never delivers a written notice, the increase is not enforceable. You still owe your existing rent on time, but you are not obligated to pay the higher amount until proper written notice has been delivered and the notice period has run.
Retaliatory Increases Are Illegal
Colorado law forbids raising rent as retaliation. Under C.R.S. § 38-12-509, a landlord cannot increase your rent because you:
- Made a good-faith habitability complaint to the landlord or a government agency about a condition affecting health or safety.
- Organized or joined a tenants’ association.
- Exercised any right or remedy available under Colorado’s warranty of habitability provisions.
The penalties are real. A tenant who proves retaliation can terminate the lease and recover up to three months’ rent or three times actual damages, whichever is greater, plus reasonable attorney fees and costs.4Justia. Colorado Revised Statutes Section 38-12-509 – Prohibition on Retaliation Retaliation is also a defense if the landlord tries to evict you for refusing to pay the increase.
Discriminatory Increases Are Illegal
An increase can also be unlawful because of why it was imposed. The federal Fair Housing Act prohibits landlords from charging different rents based on race, color, religion, sex, disability, familial status, or national origin. Proof of intent is not required. A rental practice that produces a disparate impact on a protected group can also be unlawful unless the landlord shows a legally sufficient justification.5eCFR. Part 100 Discriminatory Conduct Under the Fair Housing Act Complaints can be filed with HUD or the Colorado Civil Rights Division at no cost.
If You Live in a Mobile Home Park or Subsidized Housing
Different rules apply in a few settings. Mobile home park tenancies fall under the Mobile Home Park Act, which requires 60 days’ written notice and limits increases to once every 12 months.6Justia. Colorado Revised Statutes Section 38-12-204 Low-Income Housing Tax Credit (LIHTC) properties set rents by use restrictions tied to area median income, and HUD has capped annual LIHTC rent increases at 10%.7National Low Income Housing Coalition. HUD Caps Rent Increases for LIHTC-Financed Properties at 10% For tenants with a Housing Choice Voucher (Section 8), the landlord has to submit a rent increase request to the local Public Housing Authority at least 60 days before the proposed effective date, and the PHA must approve the new amount as reasonable compared to similar unassisted units.8U.S. Department of Housing and Urban Development (HUD). Housing Choice Voucher Program – Forms for Landlords
What To Do if the Increase Is Improper
If the notice was oral, if it came less than 60 days before the effective date on a tenancy without a written lease, if it is the second increase inside 12 months, or if it followed a habitability complaint or other protected activity, the increase is not enforceable. Keep paying your existing rent on time. You are not required to pay the additional amount until the landlord follows the correct procedure.
Document everything. Save the notice, note the date you received it, and keep records of any complaints or requests you made before the increase arrived. If the landlord files for eviction based on the unpaid difference, a defective notice or retaliation can be raised as a defense in the eviction proceeding. For a retaliatory increase, the statute allows recovery of up to three months’ rent or three times actual damages, plus attorney fees.4Justia. Colorado Revised Statutes Section 38-12-509 – Prohibition on Retaliation For a discriminatory increase, a fair housing complaint with HUD or the state civil rights division is free to file.