Colorado Emotional Support Animal Registration

Register Your Emotional Support Animal in Colorado

For ESA owners in Denver, Colorado Springs or Aurora: an ID card, certificate and digital ID in a few minutes.

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Colorado ESA Laws at a Glance

Written by: Licensed Professional Counselor (LPC-MHSP)
Medically Reviewed by Evelyn Daley MSW, LCSW
Published: Last updated:

In Colorado, keeping an emotional support animal is a housing question, decided as a reasonable-accommodation request under the federal Fair Housing Act and C.R.S. § 24-34-502. Since May 22, 2026, HUD reviews requests for untrained ESAs case by case, so Colorado's own rules below matter.

State housing lawC.R.S. § 24-34-502Colorado Anti-Discrimination Act (housing) and assistance animal provisions
ESA letter rulesA licensed mental health professional, physician, or nurse asked for a housing assistance-animal finding must have met the patient in person, know the patient and condition well enough, and be qualified to judge.C.R.S. § 12-245-229 (also §§ 12-240-144, 12-255-133)
ESA misrepresentation penaltyCivil infraction (needs a prior warning): $25 first, $50–$200 second, $100–$500 third or later.C.R.S. § 18-13-107.3
Where to file a housing complaintColorado Civil Rights DivisionFile within 1 year of the incident.

A written finding from a professional under these sections is an affirmative defense to the misrepresentation charge. Lacking one does not by itself prove misrepresentation.

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Colorado ESA FAQ

Do I need to register my emotional support animal in Colorado?

No. Neither federal nor Colorado law requires or recognizes ESA registration; what counts is documentation that meets C.R.S. § 12-245-229 (also §§ 12-240-144, 12-255-133).

What does Colorado require in an ESA letter?

A licensed mental health professional, physician, or nurse asked for a housing assistance-animal finding must have met the patient in person, know the patient and condition well enough, and be qualified to judge. (C.R.S. § 12-245-229 (also §§ 12-240-144, 12-255-133)).

Can my landlord in Colorado refuse my ESA or charge a pet fee?

The landlord must consider it as a reasonable-accommodation request under C.R.S. § 24-34-502 and the federal Fair Housing Act. Since May 2026, HUD no longer treats untrained ESAs as presumptively reasonable, so the outcome depends on your facts and Colorado law. If it's granted, ask in writing whether pet fees or deposits are waived.

Is it illegal to misrepresent an emotional support animal in Colorado?

Yes. Under C.R.S. § 18-13-107.3: Civil infraction (needs a prior warning): $25 first, $50–$200 second, $100–$500 third or later.

Can I take my ESA into stores or restaurants in Colorado?

No. Colo. Rev. Stat. § 24-34-803 and the ADA give access rights to trained service dogs only.

Can I fly with my ESA from Denver (DEN)?

Airlines at Denver (DEN) may treat an ESA as a pet under 14 CFR Part 382, so check your airline's pet rules before booking.

Where can I file a housing complaint in Colorado?

With the Colorado Civil Rights Division within 1 year of the incident, or with HUD within 1 year. Private Fair Housing Act lawsuits can be filed within 2 years.

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Official Sources

  1. C.R.S. § 24-34-502 — housing
  2. C.R.S. § 12-245-229 (also §§ 12-240-144, 12-255-133) — ESA documentation
  3. C.R.S. § 18-13-107.3 — misrepresentation
  4. Colorado Civil Rights Division — housing complaints
  5. Report Housing Discrimination (HUD) — federal complaints
  6. 14 CFR Part 382 (U.S. DOT air travel rules) — flying with animals
  7. ADA Requirements: Service Animals (U.S. Department of Justice) — why ESAs lack public access

Need a Service Dog Registration Instead?

A task-trained dog, including a psychiatric service dog, is covered by Colo. Rev. Stat. § 24-34-803.

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This summary of Colorado law was last reviewed in October 2026 and is general information, not legal advice. United States Service Dogs is a private registration service, does not issue ESA letters, and is not a government agency.