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Source cbs.com -Link to article in comments:
SAN DIEGO — Landlords in San Diego now face a new rent cap of 8.2%, effective Aug. 1 and lasting through July 31, 2027, as mandated by the California Tenant Protection Act. This cap limits how much landlords can increase rent during a 12-month period.
The latest cap is slightly lower than the past 12 months at 8.8 %, the rent cap is based, in part, on the change in the cost of living, using consumer price index data published by the U.S. Bureau of Labor Statistics, according to the California Attorney General’s Office website Rafael Bautista, director of the San Diego Tenant’s Union, expressed concerns about the increasing rental costs.

8% is still kind of high,” he said, emphasizing the struggle for tenants to keep pace with rent inflation and wages.
Bautista advocates for stronger rent control, suggesting a cap of 2-3%. 
“Honestly, based on the last five years of inflation, it needs to be brought down significantly so that people can catch up," he said.
Molly Kirkland, director of public affairs for the Southern California Rental Housing Association, highlighted that landlords are not obligated to raise rents to the maximum allowed by the cap. 

“Nothing says they have to increase rent or that they have to utilize that entire percentage," Kirkland said. 
The cap is formulated as a five percent increase plus seasonal inflation, with a maximum allowable increase of ten percent.
Both landlords and tenants are urged to familiarize themselves with the new cap. Kirkland added, “It’s important for tenants to know too so they can take a look and make sure that their landlord hasn’t made a simple mistake in calculation.” She emphasized the role of the association in keeping members informed to ensure compliance with the law. 

Bautista confirmed that Section 8 tenants are also protected under the terms of the Tenant Protection Act, provided that their properties are not exempt from the law.