Below is an excerpt from Petaluma Municipal Code Section 903.6.5, also available at https://petaluma.municipal.codes/Code/17.20.050 903.6.5 Installation of Automatic Fire Sprinklers in Pre-Existing Buildings (Historic Downtown Business District). 1. Geographic Boundary—Historic Downtown Business District: For the purposes of this section, the Historic Downtown Business District shall include all buildings located inside the geographic area generally...