“A multi-story restaurant project could soon take over one of Union Square’s longest vacant buildings. The project is estimated to cost $1.7 million, according to the city documents, and transform the brick building into four sections: a bakery, a “bistro restaurant,” a fine dining restaurant and a bar, while also updating accessible restrooms and the kitchen. Enertia Designs is the engineer, and D-Scheme Studio — behind the Alexander’s Steakhouse restaurants in Cupertino and San Francisco — is listed as the architect. The building, which sits near the O’Farrell entrance to Macy’s, and a couple of busy Union Square parking garages, has been vacant for nearly 20 years, said Union Square Business Improvement District Executive Director Karin Flood, who added that the project’s redevelopment would be welcome after such a long vacancy.”