An Act to expedite multifamily housing construction

This bill aims to speed up the construction of multifamily housing in Massachusetts by requiring local zoning laws to allow such developments by right in specific areas. It mandates that at least 1.5% of a town's developable land be zoned for apartments or condominiums with a minimum density of 20 units per acre, while also permitting cluster developments without requiring standard subdivision plans. Additionally, the legislation allows accessory dwelling units, such as basement apartments or detached guest houses, to be built by right in all single-family residential zones with minimal local restrictions. These changes directly affect cities and towns by limiting their ability to deny housing projects and streamline the approval process for developers.