How long until my small claims hearing for a security deposit case?

There's no fixed number statewide, court calendars vary enough that "it depends on your county" is the honest answer. Most tenants land somewhere between 30 and 70 days from the day they file.

Where you live shifts that window. Higher-volume counties, Los Angeles and the greater Bay Area especially, tend to sit toward the longer end simply because more cases are competing for the same court dates. A smaller county can move noticeably faster.