The California Department of Insurance on Friday announced it had provisionally approved an emergency request by State Farm, the state's largest single insurer, to raise its home insurance premiums by 22 percent provided the company can "justify it with data in a public hearing" next month.

The approval comes months after devastating wildfires, and will add an average $600 a year to homeowners’ bills.

California's top insurance regulator says he will approve an emergency request from State Farm to raise home insurance rates for roughly a million customers if the company can justify the hike at a public hearing.