Quinn Arntsen divides his practice between traditional real estate work and serving clients in the wine and cannabis industries with an overall focus on transactional real estate matters.

Quinn has represented clients in a broad range of scenarios, including counseling developers and real estate investors on acquisitions and dispositions, overseeing permitting and development applications, entity formation and joint ventures for investment and development, financing and leasing of office, industrial, retail and agricultural real estate. He has handled real estate due diligence matters for corporate, energy development and financial clients.

His experience also includes negotiating office and retail leases on behalf of both landlords and tenants. The bulk of his clients are midsized investment companies, developers and up-and-coming wine and cannabis businesses, with additional work in retail and residential real estate. He also assists high net worth individuals and family offices.

As part of his winery and vineyard practice, Quinn advises clients on real estate-related matters as well as general business issues. He has counseled clients on the management, operation and disposition of several premium vineyard properties, as well as vineyard leases, grape purchase agreements, the purchase and sale of wine companies and a broad range of ancillary real estate issues such as easements.

Quinn has also done real estate-related work for the growing cannabis industry. This has included negotiating and documenting joint ventures, preparing leases to cannabis operators on behalf of both landlords and tenants, the development of joint ventures, and the acquisition and development of a property for a high-end, all-inclusive cannabis center.

As a practitioner, Quinn combines a calm, low-key demeanor with exceptional analytical abilities and an outcome-focused approach. His goal, always, is to get things done. This combination is particularly effective with his newly-legitimate cannabis clients, who have historically tested the boundaries of business, and often need guidance in the legal and administrative issues they face under the myriad laws and regulations that now apply to the industry. With all his clients, Quinn knows their industries, understands their needs and overarching goals, and can help them focus on what is really important – helping them do business.

Quinn served as a judicial intern for the Honorable Mark D. Clarke of the United States District Court in Medford, Oregon.


  • North Bay Business Journal, 40 Under 40 (2021)
  • The Best Lawyers in America: Ones to Watch, Real Estate Law (2021)
  • Super Lawyers, Northern California Rising Stars (2015-2019)

Memberships and Affiliations

  • Board of Directors, Sonoma Valley Vintners & Growers Alliance