The fire began at 11:08 p.m. and burned the third floor of a residential unit.
Residents in the immediate area witnessed large flames and said the smoke was pretty thick.
According to Mission Local, 628 Shotwell Street is a senior care facility where six residents all out safely. The assisted living home is called the Lorne House. Several people in a nearby building were also displaced.
One person was treated for smoke inhalation and there are no other injuries. The cause of the fire is under investigation.
Red Cross working with those displaced pic.twitter.com/Jq5kMF7S8T— Janet O (@JanetONews) August 25, 2015
Overnight fire at shotwell at in the Mission District in SF pic.twitter.com/wmT5p8eLxQ— Janet O (@JanetONews) August 25, 2015