California's top insurance regulator on Friday said he would approve an emergency request by State Farm to raise premiums 22% on home insurance for about a million customers if the insurance giant could justify the hike at a public hearing.

It’s unclear how much premiums could go up in the Bay Area or which parts of the region would see the largest rate hikes. Statewide, the insurer covers roughly 15% of homes, totaling more than 1

If State Farm is successful at proving its need for rate hikes at next month’s hearing, its interim rates will climb on June 1 an average 22% for homeowners, 15% for renters and condos, and 38% for rental dwellings.

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

California’s insurance commissioner said his approval was conditioned on State Farm justifying its need for the increase by bringing data to a public hearing on April 8.

Consumer Watchdog, a consumer advocacy group that opposed State Farm’s request, said the 22% increase could equate to an additional $600 annually for homeowners.