Mason is a principal of Allen, Vahrenwald & Johnson, LLC. He was admitted to the Montana Bar in 1989, was admitted to the Colorado Bar in 1993, and joined the firm in 1998. Mason’s practice is concentrated in business law and real estate, and he has broad experience in a multitude of the facets entailed in both areas of law. Mason’s business law practice includes the formation of corporations, partnerships, limited liability companies and other business entities, the drafting of shareholder, partnership and member agreements, the purchase and sale of businesses, general contract law, and related matters. Mason’s real estate practice includes real estate acquisition, leasing, financing, and disposition, easements, and the formation of planned communities, condominiums, homeowners associations, and related matters.