Modifying regulations for existing buildings used for residential purposes.

The bill was certified as passed by both the House and Senate and enacted into law. The most significant policy change involves updating the rules for adding housing units to existing buildings. Specifically, the threshold for exempting new units from strict energy code requirements was increased from 25% to 50% of the total building square footage. Additionally, the exemption for adding units in accessory buildings was removed, and the language regarding unchanged portions of a building was expanded to include 'previously permit-approved conditioned space.' These changes aim to make it easier to add housing to existing structures while maintaining some energy efficiency standards.