Peduto spokesman Tim McNulty said the city would focus on those six buildings, because they are critical to public safety.

Fire Station 86, 1996 E. Galleria Drive, is one of nine stations at which the Fire Department holds monthly open houses January through September. Station 86 serves an area of Henderson covering about 9.8 square miles and more than 6,478 residents as of 2016, making it one of the slower stations.

A June presentation to the San Francisco Department of Public Works reveals some preliminary designs for the 16,300-square-foot bayfaring base, which would house three fireboats on top of rescue watercraft and jet skis for delivering emergency personnel to waterfront hot spots in a hurry. The station's single fire engine would remain on land.

The existing 1915 building measures just a little over 6,000 feet, with only two boats complementing the one engine. Public Works calls the facilities "grossly undersized" and notes that “costly repairs continue to mount” keeping the centenarian structure in working order.

"The truck that's out at station three that this truck will be replacing is an '05, it's been a maintenance nightmare, costing the city a lot of money," Wolfgang said. "The dependability is just not there."