Provides] Authorizes city or county to adopt five-year property tax exemption for newly constructed accessory dwelling unit, or newly converted duplex, triplex or quadplex, that is used as occupant's primary residence. Requires approval of affected taxing districts imposing majority of total combined rate of taxation on eligible property. Applies to property tax years beginning on or after July 1, 2024. Takes effect on 91st day following adjournment sine die.