Bob and Jill Hamer purchased 704 Sansome St. in the Jackson Square area of San Francisco. Total consideration for the deal was $3.03 million, approximately $281 per square foot. Built in 1907, the three-story office building measures 10,784 square feet and features balconies, exterior signage and a courtyard. The buyers will use the property to house Primitive Logic, a market-consulting firm.