Dean’s Washington state-based firm has a client list of roughly 400 marijuana businesses, which he counsels on tax and accounting issues that are specific to the industry. Dean has worked as a CPA for more than 30 years but also has worked in private industry and as a managing director of a real estate development firm. His non-cannabis work has ranged from development and construction to brokerage and rental, sectors in which he has also been involved as an owner.