Crews were called to the home on East Houston Avenue off of Cain Street just before 3 am Thursday.
They say a car had crashed into the detached laundry facility, causing a gas leak.
The Southern California Gas Company was called to repair the leak.
The care facility was not affected by the crash.
EDITORS NOTE: A prior version of this story said that Southern California Edison was called to repair the leak. We regret the error.