Starboard Commercial Real Estate Announces The Sale of 570 Market Street Rare Property Sold for $14.5 Million in Downtown San Francisco's Financial District PR Newswire SAN FRANCISCO, June 11, 2018 SAN FRANCISCO, June 11, 2018 /PRNewswire/ -- Starboard Commercial Real Estate, privately owned and locally-based San Francisco commercial real estate firm, is pleased to announce the sale of 570 Market Street in San Francisco, California. The building was purchased by Frontier Group LLC for $14.5 Million. The buyer was represented by Starboard Commercial Real Estate's Frank Chiu.