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About Us


David Polatnick

David Polatnick has more than thirty years of commercial real estate experience. His area of focus includes Owner and Tenant Representation, Investment Sales, and Property Repositioning. He recently served as Managing Principal of the San Francisco office of Newmark Knight Frank, one of the largest independent real estate service firms in the world. While there, he helped the office grow from a start-up division to a successful regional unit that combined with a world-wide team of agents, grossing over $41 billion in transactions.

He has completed transactions with numerous prominent corporations, including Tintri, Healthline Networks, Level 2 Industries, Macrovision, eBay, Terra Lycos, Wired Magazine, Sega of America, Ziff-Davis, Tower Records, General Electric, Masco Corporation, Butterfield & Butterfield, and Macromedia. In addition, Mr. Polatnick is highly experienced in working with not-for-profit clients, such as the California College of Arts, The Exploratorium, Walter and Elise Haas Fund, Waldorf Schools and the San Francisco Art Institute. He led repositioning efforts at 660 Third Street and The Townsend Center at 650 Townsend, a 650,000 square foot commercial Class “A” building in San Francisco’s SOMA District. The Townsend Center was a distressed property that was designed as a wholesale apparel mart. Polatnick arranged to put a team together to purchase the building, reposition the asset, and lease the asset from two percent leased to 100 percent occupancy. During this period, he developed a particular expertise in working with new technology companies in San Francisco. He arranged for the first San Francisco property to be wired with fiber optics, which would prove to be a major benefit to technology companies. He was among the first to recognize the potential of San Francisco’s obsolete marts and warehouses, transforming more than 3 million square feet of unused space for use by many high-profile tenants, while substantially increasing the market value of these properties. He has been credited with playing a major role in the revitalization of San Francisco’s now-booming South of Market (SOMA) district.

Prior to founding Polatnick Properties in 1989, he served as Senior Vice President of the San Francisco Mart, a 1.3 million square foot property owned by the New York-based ADCO group, for whom he managed similar properties in Houston and New York. He previously worked for New York’s Cross & Brown, a Metropolitan Life Company, and also for Riverbank Realty, where he managed and operated 750,000 square feet of Manhattan commercial properties, while acting as a Tenant Representation Broker. He received a Bachelor’s degree in Real Estate and Urban Development from the Kogod School of Business at American University in Washington D.C., and attended New York University’s Real Estate Institute.

Phone: (415) 442-5005

Marianne Quarre Dean

Trained in design and business, Marianne Dean brings an educated eye to commercial real estate. Charged with building the Property Management Division for Polatnick Properties, she also designs, builds, and implements projects; oversees online social marketing; and works on landlord/tenant representation, investment development, and asset management.

Prior to Polatnick Properties, as VP of Business Development, she helped reboot and reposition a San Francisco insurance firm; was Director of Development for the MLK Library at San Jose State University (where she increased donors and donations significantly); and specialized in multi-million dollar residential sales in the highly competitive Palo Alto area. In addition, she co-founded two small businesses, one benefitting consumers and the other small businesses.

An eighth-generation Californian raised on the mid-Peninsula, Dean earned a BS in Design at the University of California, Davis, and an MBA at the Darden School of Business at the University of Virginia. After work, she enjoys the adventure of open water rowing/sculling on San Francisco Bay, and hiking the Coastal Range. Look for her at events relating to innovative design, entrepreneurship, leadership, and real estate development. Recently an empty nester, she has two children.

In business, relationships and attention to detail are hallmarks of her personal style.

Phone: (415) 442-5004

Elizabeth Duck

For more than 12 years at Polatnick Properties, Elizabeth Duck has been responsible for property management and tenant relationships for clients such as eBay Inc., GORR Partners LLC, the San Francisco Department of Parking and Traffic, Terra Lycos, Tower Records, the San Francisco Giants, and Wired Digital. She managed over 250,000 square feet of commercial office space, including retail space. Her responsibilities included negotiation of labor and service contracts; marketing and advertising; leasing; and tenant relations. She oversees all management facets for Polatick Properties’ clients with multi-million annual gross income portfolios. This includes preparing monthly financial statements; review and approval of operating expenses; daily maintenance of accounts payable/receivable; and monitoring all bank accounts and lines of credit.

Prior to joining Polatnick Properties, she was assistant vice president at Butterfield & Butterfield, the west coast’s largest auction house. At B&B, she was director of Butterfield West, a 50,000 square foot building with operations generating over $10 million dollars in annual sales. She managed Butterfield West’s building operations, inventory management, personnel, and marketing.

Elizabeth Duck holds a BA in Advertising from San Jose State University.