Thornton, CO Cannabis Regulations: Buffer Zones (2026)
Key Facts
- School buffer
- At least 1,000 feet
- Child care/treatment buffer
- At least 500 feet
- Measured from
- Footprint of the proposed building
- Zoning verification
- Required before application accepted
- Review time
- 10 days, 20 if survey needed
- Max civil penalty
- $5,000/day for violations
Summary
Every marijuana establishment application filed in Thornton must include a scaled area map proving the proposed site sits at least 1,000 feet from any school and 500 feet from any licensed child care facility or drug and alcohol treatment facility, measured out from the building's footprint, under the city's marijuana licensing code.
Area map, drawn to scale or depicted in a satellite photograph on 8.5" x 11" paper indicating a 1,000-foot buffer area measured out from the footprint of the building demonstrating that the premises shall be at least 1,000 feet from any type of school as defined in the Colorado Retail Marijuana Code, and at least 500 feet from any licensed child care facility, and any public or private treatment facility as defined by CRS 27-82-102 for the treatment of alcohol or drug substance abuse disorder, whether inside or outside the city, as of the date the application is received
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 65).
Full Breakdown
§ 27-82-102, calculated from the date the application is received regardless of whether those facilities sit inside or outside city limits. Before that application is even accepted, § 42-715(a) requires the applicant to obtain zoning compliance verification from Thornton City Development confirming the location satisfies all zoning and land use restrictions on marijuana establishments in this article and in Chapter 18 of the code; that determination is due within ten days, or 20 days if a survey is required. An application missing the buffer map or zoning verification cannot be accepted as complete under § 42-715(c).
Section 42-715(e)(8) separately makes noncompliance with zoning and land use laws an independent, stand-alone ground for the city clerk to deny the license outright, on top of the buffer requirement itself.
Violations & Fines
An application that fails to demonstrate the 1,000-foot school buffer or 500-foot child care/treatment facility buffer is incomplete and cannot be accepted, and a site that does not meet zoning and land use restrictions is grounds for outright denial under § 42-715(e)(8). A licensee found operating in violation of these siting requirements after licensure faces a hearing officer's civil penalty of up to $5,000.00 per day, or license suspension or revocation, under § 42-735(h).
Frequently Asked Questions
How far must a Thornton marijuana business be from a school?
Is there a buffer from child care centers or treatment facilities?
What happens if a marijuana business site does not meet the buffer zones?
Who verifies the buffer distances before licensing?
Sources & Official References
Other rules in Thornton
Compare Thornton to another location·View the Colorado cannabis regulations overview
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