A plan to dramatically transform San Francisco’s stark Embarcadero Plaza into a green and vibrant park twice the size of Union Square could move forward this week, Mayor London Breed announced Monday.

Owner of the Embarcadero Center and a business-funded group would kick in half of the $25M budget for the project.

Anywhere along 18th or 19th Street in Potrero Hill, at an intersection offers great views of downtown, but on 19th Street, ...