Hayward CA 94541 510-581-9380 AB-1482 Frequently Asked Questions When does the bill become effective? AB-1482 went into effect January 1, 2020, and it expires on January 1, 2030. The rent cap provisions of AB-1482 are retroactive from March, 15, 2019. What type of dwelling units are covered by and exempted from AB-1482?