In Colorado, your ESA housing rights rest first on state law. Under the Colorado Anti-Discrimination Act (C.R.S. § 24-34-502.2), as amended by HB26-1045, permitting an assistance animal, including an emotional support animal, in housing is presumed to be a reasonable accommodation once the housing provider has had an opportunity to engage in an interactive accommodation process with the person requesting it. This state protection is enforced by the Colorado Civil Rights Division (CCRD) and remains fully active. The federal Fair Housing Act (42 U.S.C. § 3604) provides the same obligation, and that statute has not changed.
Landlords in Highlands Ranch who refuse a valid ESA letter or continue charging pet fees may be in violation of the Colorado Anti-Discrimination Act (CADA) and federal law. Complaints can be filed with the Colorado Civil Rights Division (CCRD).