A 3-day eviction notice in Colorado is reserved for three narrow situations: a “substantial violation” involving danger, violence, drugs, or serious criminal conduct; a default under a nonresidential lease; and the end of employer-provided housing tied to a job. Standard residential problems, including unpaid rent, require a longer notice period, and using a 3-day notice in the wrong situation is one of the fastest ways to get an eviction case dismissed. The rules come from C.R.S. § 13-40-104 and § 13-40-107.5.
The Three Situations That Allow a 3-Day Notice
Substantial Violations
Under C.R.S. § 13-40-107.5, a landlord can terminate a tenancy on three days’ written notice when the tenant or a guest commits a “substantial violation” on or near the property. That term covers three categories of conduct:
- Acts that endanger people living on or near the premises, or that willfully and substantially damage the landlord’s or a co-tenant’s property.
- Felonies involving violence or controlled substances prohibited under Colorado criminal statutes.
- Criminal acts carrying a potential sentence of 180 days or more that have also been declared a public nuisance under state or local law.
The termination takes effect three days after the notice is served, and there is no right to cure.1Justia. Colorado Code 13-40-107.5 – Termination of Tenancy for Substantial Violation – Definition – Legislative Declaration Unlike an ordinary lease violation, where the tenant can fix the problem and stay, this notice simply demands that the tenant leave. The tenant’s choices are to vacate or raise a defense in court.
Nonresidential Leases
Commercial tenants in office, retail, and other nonresidential properties get only three days’ notice for unpaid rent or any other lease default. C.R.S. § 13-40-104 sets the standard residential notice period at 10 days but carves out nonresidential agreements for the shorter window.2Justia. Colorado Code 13-40-104 – Unlawful Detention Defined – Definitions A commercial tenant who receives a 3-day demand for unpaid rent can cure by paying in full within the notice window.
Employer-Provided Housing
When housing is provided to an employee as part of compensation under a written agreement, the employer can terminate the right to occupy three days after the employment ends. The written agreement has to identify the employer and employee by name, state that the housing is tied to the job, include the property address, and be signed by both parties.2Justia. Colorado Code 13-40-104 – Unlawful Detention Defined – Definitions If the former employee doesn’t leave within three days, the employer can contact the county sheriff for removal.
When You Cannot Use a 3-Day Notice
This is where most mistakes happen. A standard residential tenant who falls behind on rent or breaks a lease term does not get a 3-day notice. Colorado’s cure periods for residential tenancies are:
- Standard residential lease: 10 days to pay rent or fix the violation.
- Exempt residential lease: 5 days, available only when the landlord owns five or fewer single-family rental homes and the lease specifically waives the 10-day period.3Colorado General Assembly. HB19-1118 Time Period To Cure Lease Violation
- Property covered by the federal CARES Act: 30 days.
Serve a 3-day notice on a standard residential tenant for unpaid rent and the court will dismiss the case. The landlord has to begin again with the correct notice period, and the tenant gains leverage from the procedural error.
What the Notice Must Say
Whatever the category, a 3-day notice has to identify the people, the place, the problem, and the deadline. In practice that means:
- Full names of all adult tenants on the lease or known to be living in the unit.
- The complete property address, including any unit number and the county.
- A specific description of the violation. For a substantial-violation notice, that means describing the conduct in enough detail that the tenant knows exactly what is alleged. For a demand based on unpaid rent or a lease breach, state the amount owed or the specific lease term that was broken.
- A clear deadline by which the tenant must either comply, if a cure right exists, or surrender the premises.
A substantial-violation notice must also state the specific grounds for termination and the date the tenancy ends.1Justia. Colorado Code 13-40-107.5 – Termination of Tenancy for Substantial Violation – Definition – Legislative Declaration A vague reference to “criminal activity” without naming the conduct will not survive a challenge.
The Mandatory Mediation Disclosure
Under HB23-1120, signed in 2023, any written demand to a residential tenant must include a statement informing the tenant that those receiving certain cash assistance benefits have the right to mediation before the landlord files an eviction complaint. The qualifying programs are Supplemental Security Income (SSI), Social Security Disability Insurance (SSDI), and Colorado Works cash assistance.4Colorado General Assembly. HB23-1120 Eviction Protections for Residential Tenants Leaving out this language gives the tenant an affirmative defense. The requirement does not apply if the landlord owns five or fewer single-family rental homes with no more than five total units, or if the tenant never disclosed in writing that they receive qualifying benefits.
How To Serve the Notice
C.R.S. § 13-40-108 governs service, and skipping steps is a common reason cases fall apart.
Hand the notice directly to the tenant whenever possible. If the tenant is not available, the landlord can leave the notice with a family member who is at least 16 years old and lives at or is in charge of the property.5Justia. Colorado Code 13-40-108 – Service of Notice to Vacate or Demand
Posting the notice on the door is a last resort. The landlord must first try personal service at least once on two separate days. Only after those attempts fail because no one was on the premises can the landlord post the notice in a conspicuous place such as the front door.5Justia. Colorado Code 13-40-108 – Service of Notice to Vacate or Demand Keep a written log of each attempt with dates and times.
Counting the Three Days
The count starts the day after the notice is served. The day you hand it over or post it is day zero. The three-day window cannot end on a Saturday, Sunday, or legal holiday; if it would, the deadline extends to the next business day.6Colorado Judicial Branch. Understanding the Eviction Process Filing a court complaint one day too early hands the tenant a procedural defense.
Defenses the Tenant Can Raise
Even when a substantial violation clearly occurred, several defenses can stop the eviction.
- Guest’s conduct the tenant didn’t know about. If a guest or invitee committed the violation and the tenant did not know, could not reasonably have known, could not have prevented it, and immediately reported it to law enforcement, the tenant has a complete defense.1Justia. Colorado Code 13-40-107.5 – Termination of Tenancy for Substantial Violation – Definition – Legislative Declaration
- Domestic violence or domestic abuse. A tenant who is a victim cannot be evicted under the substantial-violation statute if the violence or abuse was the cause of the alleged violation. The landlord can still pursue eviction against the person who committed the violence.1Justia. Colorado Code 13-40-107.5 – Termination of Tenancy for Substantial Violation – Definition – Legislative Declaration
- Failure to mediate. For a qualifying tenant on SSI, SSDI, or Colorado Works who disclosed that in writing, the landlord’s failure to go through mandatory mediation before filing is an affirmative defense.4Colorado General Assembly. HB23-1120 Eviction Protections for Residential Tenants
After the Three Days Expire
If the tenant does not comply or move out within the notice period, the landlord files an eviction complaint and summons in the county court where the property is located. The court clerk issues a summons giving the tenant between 7 and 14 days to appear and respond.7Justia. Colorado Code 13-40-111 – Summons At the hearing, the landlord has to prove the violation and that proper notice was served. If the court rules for the landlord, the tenant is typically given 48 hours to leave, after which the landlord can request a writ of restitution authorizing the sheriff to remove the tenant and their belongings.
No part of this sequence can be skipped. Changing the locks, shutting off utilities, or removing a tenant’s belongings without a court order is an illegal self-help eviction regardless of how serious the underlying violation is. Under C.R.S. § 38-12-510, unlawful removal includes cutting utilities, removing doors or windows, and physically locking a tenant out. A tenant who proves a willful self-help eviction is entitled to actual damages plus the greater of three times the monthly rent or $5,000, along with attorney fees and court costs, and a court can order possession restored.8Justia. Colorado Code 38-12-510 – Unlawful Removal or Exclusion The 3-day timeline exists so the court process itself can move quickly when the situation really calls for it.