HB 1548 proposes to allow an exemption from ad valorem taxation for a portion of the appraised value of the residence homestead of parents or guardians of individuals with disabilities who reside with them. It amends relevant sections of the Tax Code to clarify eligibility, the calculation of exemptions, and procedural requirements for local governing bodies or voters to adopt the exemptions. Additionally, it specifies the conditions under which individuals may qualify for multiple exemptions and limits those to one exemption per taxing unit. The bill’s enactment is contingent on the approval of a constitutional amendment by voters and would apply to tax years beginning on or after its effective date​.