Arvada staff previews Land Development Code updates, raises questions on natural medicine rules

City planning staff on April 15 presented a set of amendments to Arvada’s Land Development Code intended to correct technical errors, align local rules with recent state laws and add rules for “natural medicine” uses that the state legalized in 2022.

Rosalind Thompson, principal planner, said the package includes three categories: clarifying and refining existing regulations, updating technical or substantive requirements to reflect city policy, and correcting typographical or omission errors. Examples included clarifying permitted facilities in parks and open-space zones, adding a numeric value to a table that previously had a dash, and distinguishing two types of metal panels by name.

Thompson said the package also proposes definitions and treatment for natural medicine operations—terms such as cultivation, product manufacturing and testing facilities—so they fit within zoning categories analogous to light industrial and medical office. She said Colorado’s voter-approved Proposition 122 and S.B. 203-290 create a statewide regulatory framework for natural medicines, including psilocybin and psilocin, and that local governments may regulate time, place and manner but “cannot prohibit the establishment or operation of natural medicine businesses” or adopt rules that conflict with state law.

On residential occupancy, Thompson said changes are proposed to comply with HB 24-1007, which bars local limits based on familial relationship. The draft would replace “single-family detached” language with “single-unit detached” across the code and focus occupancy rules on health-and-safety standards rather than familial status; staff also suggested revising short-term-rental occupancy language to be tied to unrelated-person limits rather than bedroom counts.

Council members asked follow-up questions. Councilmember John Marriott said he understands the light-industrial classification for cultivation and processing but requested more legal and policy detail about the on-site administration of natural medicine and how it compares with a standard medical office, noting that sessions can last hours and are psychoactive in nature. Thompson replied the state’s statute allows time/place/manner rules but cautioned that overly restrictive local rules could be judged unreasonable or preempted if they conflict with the state framework.

Councilmembers requested additional information, including legal guidance and experiences from other cities that have adopted rules for natural medicine; staff agreed to provide follow-up materials. Council also discussed ADUs, parking minimums and occupancy language, with members noting the changes interact with broader housing goals in the city’s 2024 housing needs assessment.

No ordinance or final vote was taken; the presentation served as a workshop to solicit council direction and to identify issues—especially the siting and regulation of natural medicine healing centers—that require further analysis.