Costa Hawkins California Proposition 10: Repeal Costa Hawkins By Liza Veale • Sep 19, 2018 Creative Commons. Cropped and resized. This proposition would allow cities to expand their rent control ordinances by repealing the 1995 law known as Costa Hawkins. Debating Costa-Hawkins: Should we strengthen or shrink rent control laws? By News Producer • Feb 27, 2017 Liza Veale Listen Listening... / 10:07 In order to stem the tide of displacement in places like the Bay Area, some advocates want to strengthen tenant protections at the state level. One way to do that would be to modify or repeal the Costa-Hawkins Rental Housing Act.