Every step, every statute, every timeline — C.R.S. § 38-12 (Tenants and Landlords)
The Colorado eviction process — also called unlawful detainer, forcible entry and detainer, summary ejectment, or possessory action depending on which part of Colorado you are in — is a strict, court-supervised procedure governed by C.R.S. § 38-12 (Tenants and Landlords). Every step has a statutory deadline, every notice has a statutorily required form, and every misstep (wrong notice period, defective service, wrong court, accepting partial rent after the notice expires) can restart the entire eviction clock or invite dismissal. Self-help eviction — changing locks, shutting off utilities, removing the tenant's belongings, threatening or harassing the tenant, filing a false police report — is a criminal offense in most of Colorado and exposes the landlord to actual damages, statutory penalties, attorney fees, and in some counties punitive damages.
Colorado is a just-cause state — meaning a landlord may only terminate a tenancy, refuse to renew a lease, or file for eviction on one of the statutorily enumerated grounds (non-payment of rent, material lease violation, substantial damage to the premises, use of the premises for unlawful activity, owner or close-relative move-in, substantial rehabilitation, withdrawal of the unit from the rental market, or end of a fixed-term tenancy for a legitimate business reason). A notice of non-renewal that does not state a valid statutory basis will generally be dismissed on demurrer or motion to quash.
A Colorado eviction runs through five discrete phases: (1) written notice to the tenant (pay-or-quit, cure-or-quit, or unconditional quit depending on the reason); (2) filing the eviction complaint (unlawful detainer, forcible entry and detainer, or summary ejectment) in the proper Colorado county court after the notice period expires; (3) service of the summons and complaint on the tenant, with strict compliance required; (4) the hearing or trial after the tenant's answer deadline passes, resulting either in default judgment or a contested bench trial before a Colorado magistrate, justice of the peace, or district-court judge; and (5) writ of possession and sheriff lockout — the only lawful way to physically remove a tenant who refuses to leave voluntarily. This guide walks through each phase in Colorado-specific detail, including the applicable notice days, filing fees, and typical timelines under C.R.S. § 38-12 (Tenants and Landlords).
| Reason | Notice | Statute | Notes |
|---|---|---|---|
| Non-payment of rent | 10 days | C.R.S. § 38-12 (Tenants and Landlords) | 10-day demand for rent or possession. |
| Lease violation / cure | 10 days | C.R.S. § 38-12 (Tenants and Landlords) | 10-day notice to cure the violation or quit, where the violation is curable. |
| End of term / no-cause | 30 days | C.R.S. § 38-12 (Tenants and Landlords) | Colorado requires just cause for non-renewal — a no-cause termination is generally NOT available on renewal. |
Landlord must deliver a written 10-day notice demanding rent or possession. Service must comply with Colorado statute.
If tenant has not paid or vacated after the notice period, landlord files in the appropriate local court and pays the filing fee.
The court issues a summons; a process server or sheriff must personally serve the tenant. Service rules vary by county.
Tenant typically has a short window to file a written answer. If no answer is filed, landlord may obtain default judgment. Contested cases are set for a trial date.
Upon judgment for the landlord, the court issues a writ of possession. The sheriff or constable posts and then executes the lockout; only law enforcement may physically remove the tenant.
Just-cause required for termination in Colorado. Colorado limits lawful termination of a residential tenancy to a closed list of statutorily enumerated grounds — non-payment of rent, material lease violation not cured within the statutory cure period, substantial damage to the premises, nuisance or illegal activity on the premises, owner or immediate-family move-in, withdrawal of the unit from the rental market (Ellis-style removal), substantial rehabilitation or demolition, and end of a fixed-term tenancy for a legitimate business reason. No-cause terminations are generally unavailable on renewal. A Colorado notice of termination that does not plead a valid statutory just-cause ground, or that pleads a ground not supported by contemporaneous documentation, will be dismissed. Build the termination theory around a specific statutory basis, gather the documentary proof (ledger, repair-request log, code-inspection records, police reports, witness statements) before serving notice, and confirm the notice form and service method with a licensed Colorado landlord-tenant attorney.
Notice to quit in Colorado: form, service, and content. The initial written notice to the tenant — 10-day demand for rent or possession on a non-payment claim, 10-day notice to cure or quit on a curable lease-violation claim, or 30-day no-cause notice at the end of a month-to-month tenancy where state law permits — must be in writing, must precisely identify the tenant, the premises, the rent amount due (for non-payment) or the lease provision violated (for lease-violation), the cure option if any, and the consequence of non-cure (action for unlawful detainer and possession). Most Colorado counties require personal service of the notice to quit, with substitute service permitted after diligent attempts. Many Colorado evictions fail on defective notice content or defective service — preserve written proof (photographs of the posted notice, USPS certified-mail receipts, process-server affidavit) of every delivery attempt.
Which Colorado court hears residential evictions. Evictions in Colorado are filed in the district, justice, magistrate, superior, superior court landlord-tenant branch, county court, or civil court for the Colorado county where the rental property is physically located — the exact court name depends on which part of Colorado you are in. File in the wrong division or the wrong county and the case is dismissed without prejudice — a cheap mistake, but it costs the Colorado landlord 30 days of further unpaid rent and the cost of a refiling. Pro se landlords should call the Colorado county court clerk before filing to confirm: the proper division, the correct case caption, the current filing-fee amount, whether a copy of the lease must be attached at filing, and whether local rules require a pre-filing cover sheet or civil case information statement.
Service of the summons and complaint in Colorado. After the eviction complaint is filed and the summons issues, the tenant must be personally served in most Colorado jurisdictions — sheriff, constable, or private process server. Most Colorado counties allow substitute service (leaving the papers with a competent adult residing at the premises and mailing a sealed copy to the tenant's last-known address) after documented diligent attempts at personal service. Posted service (affixing to the door) is a last-resort method in Colorado and is frequently challenged on due-process grounds — a Colorado landlord who relies on posted service without exhausting personal and substitute service almost always loses a motion to quash. Preserve dated proof of every service attempt.
Tenant's answer period and the hearing in Colorado. After service, the Colorado tenant has a short statutorily defined window (typically 5–20 days depending on Colorado statute and type of service) to file a written answer with the court, appear for the hearing, or both. Failure to answer or appear permits the landlord to move for default judgment at the first hearing, which is how the majority of uncontested Colorado evictions end. If the tenant does answer and appear, the case is set for a bench trial — Colorado magistrates and district-court judges handle these on a high-volume docket, typically issuing a judgment for possession the same day unless complex habitability, retaliation, or discrimination defenses require a continuance.
Writ of possession and sheriff lockout in Colorado. Once judgment for possession issues in favor of the Colorado landlord, the court clerk prepares a writ of possession (also called a writ of restitution, writ of eviction, or order for possession, depending on which part of Colorado you are in). The Colorado sheriff, constable, or marshal then posts the writ on the door giving the tenant a short statutory window — typically 24–72 hours — to vacate voluntarily before the physical lockout is executed. Only law enforcement may execute the lockout in Colorado — the landlord may not change locks, remove belongings, cut utilities, or otherwise self-evict, even after the writ issues and even if the tenant has clearly abandoned the unit. Landlord-side self-help post-writ is a separate tort in Colorado and exposes the landlord to compensatory damages, statutory penalties, attorney fees, and in some counties punitive damages.
Post-judgment tenant property handling in Colorado. After the lockout, any personal property the tenant leaves behind must be handled under Colorado abandoned-property statutes — typically a written notice to the tenant's last-known address and a statutory storage period (15–60 days) before sale or disposal. Disposing of tenant property without following the Colorado procedure is a separate wrongful-conversion claim. When in doubt, photograph everything, store it safely, and err on the side of the longer statutory notice window.
An uncontested Colorado eviction typically resolves in 21–45 days from filing to lockout. Contested cases extend to 60–120 days.
Colorado requires a 10-day notice to pay or quit for non-payment of rent under C.R.S. § 38-12 (Tenants and Landlords).
No. Self-help evictions — changing locks, shutting off utilities, removing tenant belongings — are prohibited. Landlords must obtain a court judgment and use the sheriff for any lockout.
Accepting rent after the notice period typically waives the right to proceed on that specific notice. If you want to preserve the eviction, refuse the partial payment and document the refusal in writing, or accept it with a written reservation-of-rights under C.R.S. § 38-12 (Tenants and Landlords).
Yes. Every Colorado court recognizes the implied warranty of habitability. A tenant who has reported significant defects (no heat, active water intrusion, rodent infestation, code violations) and the landlord has not repaired can obtain rent reduction or dismissal. Document every repair request, inspection, and response.
Sources: C.R.S. § 38-12 (Tenants and Landlords). Last reviewed April 17, 2026. Informational only — not legal advice. Consult a licensed Colorado attorney.
