The house is located in a private residential community about six miles southeast of Tracy on the 30000 block of South Kasson Road.
Tracy Fire Department Division Chief Andy Kellogg said the home was fully engulfed in flames when firefighters arrived at the scene shortly after 6 a.m.
According to the fire department’s report, heavy smoke and fire billowed from the house, which partially collapsed when firefighters arrived.
Firefighters were unable to enter the house to battle the blaze, Kellogg said, so they focused on keeping the fire from spreading.
Firefighters were told by area residents that the house was vacant.
There were no injuries reported, and the loss of property was estimated to be in the $60,000 to $100,000 range.
The cause of the fire is still under investigation.