Black Mountain Properties, LLC Black Mountain Properties, LLC is a full-service, family-owned, commercial real estate investment, development and property management company, based in San Carlos, California, with a portfolio of quality commercial and industrial properties located throughout Northern California. Founded in 1937, by the very same family that began and managed Black Mountain Spring Water Company, Cap Snap Seal, Three Sisters Ranch Enterprises and Faulstich Investments, Black Mountain is a respected and experienced property company that brings, innovation and commitment to the communities, employees and tenants it serves. Black Mountain Difference Today, more than ever, an organization's success depends on knowledge and communication. The more experience and efficiencies in managing properties and getting information to tenants, the bigger the competitive advantage. That's why Black Mountain Properties excels in its field. Our tenant experience range is broad; it includes members of the Fortune 500, non-profits, government organizations, retail and service firms, as well as small boutique companies and technology start-ups. We help each of them locate and enjoy the right facilities for their unique operations, in the most efficient manner. Helping them along their way by providing valuable services and improvements, as well as sound advice is part of our commitment to their success and growth.