How to Get a Legitimate ESA Letter in Colorado
Colorado's 2026 law gave landlords a clear right to ask for reasonable documentation, and gave tenants a presumption in their favor once they engage. The letter is where those two meet.
Colorado Has No ESA Letter Statute, but It Now Has a Documentation Rule
HB 26-1045 amended Colorado's fair housing law in 2026. It did not create a special form. It set out what a housing provider may do when a request arrives. The broader picture is on Colorado housing laws.
What a landlord may do
- Request reasonable documentation of a disability or disability-related need when it is not obvious
- Engage in a good-faith interactive process before deciding
- Consider an animal's documented, specific conduct that threatens safety or causes substantial damage
What does not decide the request
- A registry listing, certificate or ID card, because Colorado keeps no ESA registry
- The animal's mere presence, which the law says is not a direct threat
- A building-wide ban on assistance animals, which is presumed discriminatory
Six Parts of a Letter a Colorado Landlord Can Rely On
Short, specific and verifiable beats long and emotional.
- Professional letterheadClinician name, practice, phone and email.
- License detailsLicense type, number and the state that issued it or the compact privilege used.
- Disability statementConfirms a disability without spelling out a diagnosis.
- The disability-related needExplains how the animal alleviates symptoms or effects.
- Familiarity with youShows the clinician evaluated your situation.
- Date and signatureRecent, signed and easy to confirm.
Clinicians Who Can Document the Need
Colorado's Division of Professions and Occupations licenses most mental health professions, and its online lookup lets anyone confirm a license.
Psychologists
Licensed by the State Board of Psychologist Examiners.
Professional counselors
LPCs who assess and treat mental health conditions.
Clinical social workers
LCSWs, common in community mental health centers.
Marriage and family therapists
LMFTs who may already know your household.
Psychiatric nurse practitioners
Advanced practice nurses providing mental health care.
Physicians and psychiatrists
Including a primary care doctor who treats the condition.
Out-of-state clinicians and compacts
Colorado participates in PSYPACT for psychologists and the Counseling Compact for professional counselors. A clinician using a compact privilege, or holding a Colorado license, can serve a patient located in Colorado.
After You Send the Letter: Colorado's Interactive Process
The 2026 presumption that an assistance animal is a reasonable accommodation applies once the landlord has had the chance to talk it through. That makes your replies part of the case.
Legitimate Provider or Letter Mill?
Compare any service you are considering against this scorecard.
| Question | Legitimate provider | Letter mill |
|---|---|---|
| Who evaluates you? | A named clinician you speak with | An anonymous form |
| Can the answer be no? | Yes, when the need is not found | Approval is guaranteed |
| Is the license verifiable? | Number and state on the letter | No license details |
| What is being sold? | A clinical evaluation | A registry number or certificate |
| Where is the clinician authorized? | Colorado, or a compact privilege | Unstated |
Keeping Documentation Current
Colorado sets no expiration date, but real-life triggers make an update sensible.
A new landlord reviews its own request, and recent documentation avoids delays.
Some managers ask for an updated letter; ask why if nothing has changed.
A new or additional animal needs its own request and documentation.
If your clinician changes, keep the prior letter and ask the new clinician for one.
ESA Letter or Service Dog Documentation?
Task training is explained on Colorado service dog laws.
Colorado Evaluation Plans and Prices
The Free Screening comes first. If an evaluation fits, these live plans show what each option costs.
Colorado ESA Letter FAQs
Is there a Colorado law about ESA letters?
Colorado has no stand-alone ESA letter statute. Since August 12, 2026, state housing law lets a housing provider request reasonable documentation of a disability or disability-related need for an assistance animal when that need is not obvious.
Who can write an ESA letter in Colorado?
A licensed health care provider who is familiar with you and authorized to practice with patients in Colorado, such as a psychologist, professional counselor, clinical social worker or physician. Some clinicians practice in Colorado through PSYPACT or the Counseling Compact.
Does a Colorado ESA letter have to name my diagnosis?
No. The letter confirms that you have a disability and a disability-related need for the animal. A specific diagnosis and treatment records are not normally part of reasonable documentation.
Do ESA letters expire in Colorado?
No Colorado statute sets an expiration date. Many housing providers ask for recent documentation at a new lease or renewal, so plan to update your letter periodically.
Can I get an ESA letter online in Colorado?
Yes, through telehealth, when the clinician is authorized to practice in Colorado and performs a genuine assessment. Instant approval without a real evaluation is a warning sign.
Is an ESA registration or certificate valid in Colorado?
Colorado keeps no emotional support animal registry, and a certificate or ID card does not show a disability-related need. Documentation from a clinician who evaluated you is what supports a request.
Continue Your Colorado Research
General information about emotional support animal documentation in Colorado, current as of September 2026. It is not legal or medical advice, and a clinician decides whether documentation is appropriate.
Documentation Built for Colorado's New Rules
Take the Free Screening to see whether an evaluation with a clinician authorized in Colorado is right for you.
