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Sean T. McAllister

Sean T. McAllister

Real Estate Law and Business Lawyer
McAllister Garfield, P.C.
Denver, CO
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About Sean T. McAllister

Attorney Biography

Sean T. McAllister is the founding partner of McAllister Garfield P.C., and along with his team of fifteen lawyers, the firm focuses its practice on the marijuana industry in Colorado, California, Florida, and Oregon. Sean and his Firm focus on all aspects of marijuana law including regulatory compliance, intellectual property, Indian Law, M&A, business transactions, real estate, tax, and civil litigation. In Sean's role as counsel to dispensaries, he has litigated disputes between owners, sued state and local regulators over enforcement actions, litigated pesticide standards for marijuana grows, negotiated settlements for rule violations allegations, and drafted licensing/endorsement agreements with celebrity personalities. He played an integral role in the drafting of the 2012 marijuana legalization initiative Amendment 64, approved by the voters of Colorado in November 2012. Sean’s firm also handles felony and misdemeanor marijuana criminal cases. Sean is a graduate of the University of Colorado School of Law, class of 1999. After law school, Sean served as an Assistant Attorney General with the state of Colorado. He is licensed to practice law in Colorado and California.

Practice Areas

Real Estate Law (26%)
Business Law (24%)
Marijuana Law (13%)
Criminal Defense (13%)
Contracts (12%)
Administrative Law (12%)
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Résumé - Sean T. McAllister

Bar Licenses

Colorado State Bar
Member in Good Standing


Lifetime Member,
Legal Committee
National Organization for the Reform of Marijuana Laws

Colorado Criminal Defense Bar

Commercial Recognitions

Community Leadership badge
Recognized for Community Leadership
Lawyer Legion

Professional Involvement badge
Recognized for Professional Involvement
Lawyer Legion

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Contact Sean T. McAllister

Sean T. McAllister
McAllister Garfield, P.C.
501 S. Cherry Street Suite 480
Denver, CO 80246
Office: 720-722-0048
Fax: 720-542-8391

More Information

Bar License Information

Colorado Supreme Court Information -

Sean T. McAllister - Attorney information with the Colorado Supreme Court - Find more information about Sean T. McAllister on the Colorado Supreme Court website, including status and disciplinary history.

Nonprofit Organizations

Colorado Criminal Defense Bar -

The CCDB provides support and training to criminal defense attorneys and advocates to protect the rights of the accused.

National Organization for the Reform of Marijuana Laws NLC -

More than 350 criminal defense attorneys belong to the NORML National Legal Committee (NLC). Members of the NORML NLC include many prominent criminal defense lawyers who are dedicated to ending prohibition of marijuana through education, legal reform and activism. Attorneys focused on other practice areas also belong to the organization.

NLC members are listed on the NORML website, are eligible for the NLC e-mail discussion group, receive the weekly email press release, and NORML News.