The fire broke out near Hammonds Ferry Rd and 1st Avenue in Lansdowne, according to the BCFD.
Seven adults and four children were displaced by the fast-moving blaze, the department added.
Four fighters suffered minor injuries battling the blaze and have been discharged from the hospital, the department said Tuesday morning.
“We're grateful for the outpouring of support from the community as they continue their recovery,” said the BCFD.
The cause of the fire is under investigation.
Click here to follow Daily Voice Towson and receive free news updates.