The intersection of Foerster and Joost is not just a street corner in Sunnyside, it’s the stormy tale of a family torn apart by the relentless greed of one uncle, Behrend Joost, and the industrious loyalty of his nephew, Constantine Foerster, that finally gave way under the pressure of it. Joost went down in a long spiral of lawsuits, but Foerster survived and prospered, saved by taking the terrible decision to break his bond to his uncle, and stake his future in the company of men of better judgment and ethics.
Constantine E.A. Foerster was a successful and industrious corporate attorney in late nineteenth-century San Francisco. At the age of sixteen, he got his start in the city working for his uncle, a scrappy, ill-mannered hardware dealer named Behrend Joost. For many years his fortunes were deeply entwined with this uncouth entrepreneur, including as the attorney for Joost’s project to build San Francisco’s first electric streetcar system. The property speculation project called Sunnyside went along with the streetcar, and Foerster was one of several officers in the company whose names remain on the streets there.
Sunnyside played an important role in the development of the first electric streetcar in San Francisco. Before the enterprise was initiated in 1890 by streetcar-railway engineer John Wesley Hartzell, with financial backing from millionaire real-estate speculator Behrend Joost, horse-powered and cable-driven streetcars were the norm. Soon the newly introduced technology would power many of SF’s many privately-held transit lines. But the San Francisco and San Mateo Railway was the first electric railroad in the city.
Central to the enterprise was the Sunnyside Powerhouse, located on the then unbuilt flatiron-shaped block between Monterey, Circular, and Baden.