Amendment 64 (2012) & Denver’s Role

Last verified: May 2026

The Cannabis Timeline

Amendment 64 — The 2012 Vote

The “Regulation of Marijuana” amendment to the Colorado Constitution passed November 6, 2012 with 55.3% statewide support, per the Colorado Secretary of State’s certified abstract. Denver County voted approximately 70.6% in favor, far ahead of the state — reflecting the city’s role as the campaign’s nerve center.

Amendment 64 made Colorado the first jurisdiction in the world to legalize, tax, and regulate adult-use cannabis through popular vote, on the same day Washington State passed Initiative 502.

The Campaign Architects

• Mason Tvert — Marijuana Policy Project. The architect of the 2012 messaging campaign. Now a Denver-based VS Strategies partner.
• Brian Vicente — Sensible Colorado. Co-author of Amendment 64. Now founder of Vicente LLP, the Denver-based national cannabis-law firm.
• Betty Aldworth — National Cannabis Industry Association.

Implementing Legislation

House Bill 13-1317 created the regulatory framework. Proposition AA (November 5, 2013) layered the 15% excise tax and 10% (later 15%) special retail sales tax. Denver voters separately approved Question 2A in November 2013, authorizing the city’s local 3.5% marijuana sales tax (initially), with a ceiling that the city could raise without further voter approval up to 15%.

Denver later raised the local rate to 5.5% in 2018 with voter approval, dedicating a portion to affordable housing. Since 2018, the marijuana tax has generated more than $45.5 million for Denver’s Affordable Housing Fund (per Denver Department of Excise and Licenses report cited by FOX31 March 2024). Tax revenue and housing detail.

The First Sale — January 1, 2014

At 8:00 a.m. on January 1, 2014, doors opened at the 3D Cannabis Center at 4305 Brighton Boulevard, and Sean Azzariti — a former U.S. Marine corporal who served two tours in Iraq and lived with combat-related post-traumatic stress disorder — handed over $59.74 for 3.5 grams of Bubba Kush and a packet of cannabis-infused chocolate truffles.

The transaction was the first legal recreational cannabis sale by a state-licensed business in modern U.S. history. More than a hundred customers stood in snowfall behind Azzariti, and dispensary owner Toni Savage Fox would later report $3.6 million in 2014 revenue from a business that had grossed $400,000 the year before.

The Symbolic Customer — Sean Azzariti

A native of Natick, Massachusetts and a U.S. Marine corporal who served from 2000 to 2006 with two tours in Iraq, Azzariti was tapped by Mason Tvert in late 2013 to be the symbolic first customer. Azzariti could not legally use cannabis as a medical patient in Colorado at the time because PTSD was not a qualifying condition.

As of 2026 he still works in the Colorado cannabis industry; he previously managed a hydrocarbon-extraction facility producing wax and shatter and currently works as a chemist at a cannabis testing lab. He still owns the original 2014 purchase, now nearly twelve years old, and has unsuccessfully sought to donate it to museums citing federal prohibition. He told Westword in 2024: “I can’t give it away. I don’t know what to do with it. I’ve tried to give it to so many people and museums.”

3D Cannabis Center — The Building

Owner Toni Savage Fox moved 3D Cannabis from medical to recreational in 2014 and reportedly grew sales from $400,000 in 2013 to $3.6 million in 2014, per CNN. She sold the dispensary to Euflora in 2017; in late 2022 Euflora’s Colorado assets were acquired by Detroit-based JARS Cannabis, which kept the “3D” branding and ultimately moved the license to a 3,800-square-foot store at the corner of Federal Boulevard and West 19th Avenue near Empower Field at Mile High in 2024.

The original Brighton Boulevard building “imploded,” in operator Jim Rybicki’s phrase, as the surrounding RiNo neighborhood transformed into an entertainment-and-condo district anchored by the Mission Ballroom. RiNo neighborhood.

Initiative 300 (November 8, 2016)

Denver voters approved the Neighborhood-Supported Cannabis Consumption Pilot Program with 53.57% in favor. Lead proponent: Kayvan Khalatbari, co-owner of Denver Relief Consulting; co-architect Emmett Reistroffer.

The initiative made Denver the first U.S. city to authorize public cannabis-consumption permits, although the Colorado Department of Revenue’s Liquor Enforcement Division swiftly issued Rule 47-900, which barred liquor licensees from cannabis consumption — gutting much of the original scope. The pilot was set to sunset in 2020 but was effectively superseded by HB 19-1230, which created statewide cannabis hospitality licensing. Consumption lounges.

Mayor Michael Hancock and the April 2021 Reforms

Michael Hancock served as Denver’s 45th mayor from July 2011 through July 2023, presiding over the entire arc of legal-cannabis implementation. Hancock had personally opposed Amendment 64 in 2012 but oversaw expansive regulatory build-out and signed the 2021 social-equity and delivery laws on April 20, 2021 — the unofficial 4/20 holiday.

Mayor Mike Johnston (2023–)

Mike Johnston — a former state senator (2009–2017), school principal, and 2018 gubernatorial primary candidate who lost to Jared Polis — was sworn in as Denver’s 46th mayor on July 17, 2023, after defeating Kelly Brough in a June 6, 2023 runoff. Cannabis has not been a signature Johnston issue; his agenda has centered on homelessness (he declared a state of emergency the day after taking office), public safety, downtown revitalization, and migrant integration through the Denver Asylum Seekers Program.

Companion Site — Statewide Colorado Detail

For statewide Colorado cannabis context — the Charlotte’s Web pre-Amendment-64 medical history, the Marijuana Enforcement Division operations statewide, and the broader Colorado cannabis politics outside Denver — see COCannabis.org.