The fire was reported just after 7 a.m. in the 13-story Parkmerced apartment tower at 55 Chumasero Drive.
By 7:24 a.m., the fire was contained and it was brought under control at about 7:40 a.m., according to the dispatcher.
Two people were transported to the hospital, but no details of their injuries were immediately available.
The cause of the fire is under investigation.
