CT HB05507

Replaces the term "accessory apartment" with "accessory dwelling unit" throughout Connecticut statutes, effective October 1, 2026

Eliminates the municipal opt-out provision that previously allowed towns to exempt themselves from ADU requirements through a two-thirds vote of the zoning commission and legislative body

Removes owner-occupancy requirements, allowing property owners to rent both the principal dwelling and ADU without residing in either unit

Changes minimum ADU size from a maximum of 30% of principal dwelling (or 1,000 sq ft, whichever is less) to a minimum of 30% (or 1,000 sq ft, whichever is greater)

Directs the Commissioner of Housing to develop preapproved ADU designs and provide incentives including grants, forgivable loans, and technical assistance for construction of qualifying units