San Francisco voters will have five ballot measures to consider at the polls on March 3, and the city’s Elections Department assigned each an identifying letter Monday.

By law, bond measures get top billing on San Francisco ballots, followed by proposed charter amendments and then ordinance proposals.

On election day, voters will weigh bonds for City College of San Francisco and earthquake safety, a vacancy tax on empty storefronts, and more. Here’s the lineup of local ballot measures facing voters in March:

• Proposition A: Decades of deferred maintenance has left several City College campuses in dire need of renovation, according to Prop. A’s supporters. The measure would allow the city college district to sell $845 million in bonds to perform improvements to school buildings, including seismic retrofits. If Prop. A passes, the funds would also help make future buildings more environmentally sustainable. The measure needs a 55% majority to pass.

• Proposition B: As part of the city’s ongoing efforts to ensure San Francisco can rebound and rebuild after the Big One, Prop. B is the latest earthquake safety and emergency response bond. If passed, the city would be allowed to sell $628.5 million in bonds to finance infrastructure improvements at police and fire stations, the 911 call center, and other disaster-response facilities. It would also fund an expansion of the city’s emergency firefighting water system, which supplies firefighters with large volumes of high-pressure water. The measure needs a two-thirds supermajority to pass.

• Proposition C: Prop. C seeks to ensure that employees of the San Francisco Housing Authority can access their city retirement medical benefits if they found another city job following the agency’s collapse in March. The measure has to go before voters because it’s technically an amendment of the City Charter. Should Prop. C pass with a simple majority vote, it would ensure several dozen ex-housing authority employees aren’t penalized by a gap in their work with the city due to the agency’s unraveling.

• Proposition D: With so many San Francisco neighborhoods beset by a rash of empty storefronts, Prop. D would tax property owners who keep ground-floor space in certain commercial districts vacant. If the measure passes with a two-thirds supermajority, landlords whose storefronts have been empty for more than 182 days will be charged a fee based on the size of their storefront and how long it’s remained empty. The tax, championed by Supervisor Aaron Peskin, would start at $250 per linear foot of storefront in year one and double in each consecutive year. The measure would affect the city’s 30 or so neighborhood commercial corridors, including Union Street, West Portal and Haight Street, starting in 2021.

• Proposition E: Prop. E, which needs a simple majority to pass, would restrict future office development if San Francisco fails to meet state-mandated affordable housing goals. Currently, San Francisco only allows a certain amount of office space to be approved every year thanks to another ballot measure from the 1980s. But Prop. E would further lower the amount of office space that could be approved by a percentage equal to the city’s shortfall in approving affordable housing development. The amount of affordable housing that should be approved would be based on state mandates. The measure was sponsored by SoMa nonprofit and affordable housing manager Todco.

— Dominic Fracassa

Dominic Fracassa is a San Francisco Chronicle staff writer. Email: dfracassa@sfchronicle.com Twitter: @dominicfracassa