An apparent water main break Thursday evening flooded streets and homes in Tarzana, fire officials told KTLA-TV Channel 5.
Water was coursing through a street near Brewster and Topeka drives, helicopter video showed.
Fire officials said the main burst in front of a home under construction on Brewster Drive.
The water affected about six homes in the area, mostly flooding yards and garages, according to the Los Angeles Fire Department.
One major problem was a boundary wall surrounding one property that started to act like a dam, a fire official said.
“You can see we had to breach a wall at the home … on the corner in order to let the water out of the back yard because it was building up,” LAFD Battalion Chief Brian Schultz said. “It was about two and a half feet deep when we got here.”