Requires certain preliminary approval of municipality prior to licensure of community group homes.

S 4559 requires community group home operators to first obtain municipal approval confirming compliance with local zoning and land use regulations before the state Department of Human Services can issue a license. This affects new or existing community group homes serving individuals with developmental disabilities or addiction, as they must now secure a written "certificate of preliminary approval" from their municipality. The bill mandates that the municipality verify the proposed home meets all pre-existing local ordinances, and the state department cannot approve a license application without this certificate. This adds a new local government review step to the licensing process for these facilities.