The City Council on Tuesday formally approved an annual 10% ceiling on rent increases.
Before its 4-0 vote, the council expanded the ordinance to include duplexes after tenants complained about being excluded from previous rent controls.
Officials estimated that 4,500 of the city's 8,263 rental units will be affected by the new law, which originally had been limited to complexes with three or more units.
In June, the council approved a moratorium on rent increases that will end Nov. 7, when the ordinance will officially take effect. Under the new law, however, landlords must give tenants 60 days' notice of a rent hike, so an increase could not be imposed until Jan. 7, said Fred Cunningham, city director of public affairs.