This bill requires cities/counties to allow accessory dwelling units (ADUs)—small, secondary homes located on the same lot as a primary single-family home—in single-family zones, by Dec 1, 2026. It removes owner-occupancy and extra parking requirements, and lets landlords accept reusable tenant screening reports without charging extra fees. Owners keep their homestead exemption even if renting ADUs; rented ADUs are taxed separately. Local governments can offer incentives for affordable housing donations, like "density bonuses." The bill also calls for a study on using tiny homes and new finance options, like second loans, to increase affordable housing.