“In the past few months, two local homeowners have approached me about building out ADUs. The Zoning Board of Appeals may allow more than twenty-four (24) dwellings per building in existing structures being converted to multifamily units.” Protected, by-right ADUs that do not need a special permit would still be limited to 900 square feet. “We made a mistake,” Planning Board Vice Chair George Touloumtzis said. The Planning Board is set to continue discussions and potentially vote on how to proceed at its next meeting in September.