California lawmakers are considering Senate Bill 584 by Sen. Monique Limón, which would impose a 15% tax on short-term rentals to generate an estimated $150 million annually to build or rehabilitate low- and middle-income housing. Airbnb has rallied its hosts to oppose the bill, while Gov. Gavin Newsom is apprehensive about increasing taxes. The bill aims to boost housing affordability, but is facing hurdles as a tax measure requiring a two-thirds vote. It would fund grants for public entities and nonprofit providers to create affordable housing projects permanently set aside for low- and middle-income renters.