The fire is no longer spreading and crews are currently working to contain hot spots.
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The fire is burning near San Felipe Road and Heartland behind the California Oak Creek neighborhood.
UPDATE: Brush Fire in South San Jose has burned 30 acres — up from 5. Forward progress has been stopped (good news). @SJFD & @CAL_FIRE working together to knock this one down. About 80 firefighters working to contain hotspots. No evacuations. Pics: @SJFD https://t.co/46egCZjO8o pic.twitter.com/Q7pKUlzFAK— Julian Glover (@JulianGABC7) June 4, 2020
No injuries have been reported and Cal Fire said that no homes are in danger.
"Firefighters are trying to prevent the fire from spotting over and actually engaging in any further acreage. So it's steep, it's hot, and firefighters are out there working as hard as they can," Assistant Chief George Huang of Cal Fire Santa Clara Unit.
Huang wants to remind homeowners to do their part to take care of vegetation around their home to help protect against any brush fires before they ever start.
The cause is still under investigation.
Stay with ABC7 News for updates on this developing story.