TX SB673

Prohibits local governments from banning accessory dwelling units (ADUs) on lots zoned for single-family homes or duplexes, including restrictions on owner-occupancy requirements, leasing ADUs, or building timing relative to the primary dwelling

Limits local parking requirements for ADUs on lots platted before 1965, lots under 7,000 square feet, or lots within 1,320 feet of public transit; caps maximum setback requirements at 5 feet for side and rear

Requires ADUs be allowed at minimum 800 square feet or 50% of the primary dwelling size, with ceiling heights of at least 14 feet; prohibits local design regulations on shape, massing, or floor distribution

Bars local governments from charging impact fees unless a new or larger utility meter/connection is needed, and prohibits additional fees or exactions such as parkland dedications

Mandates ministerial (non-discretionary) permit processing within 60 days, with automatic approval if deadline is missed; allows property owners to sue for damages and attorney's fees if localities violate these provisions