The document discusses innovative zoning strategies for adaptive reuse of unused or underutilized historic buildings. It provides examples of zoning approaches in Fitchburg and Westford that aim to facilitate private investment through flexible zoning that allows mixed uses and densities. Non-zoning strategies discussed include pursuing brownfields funding, coordinating permitting, and providing technical assistance on financing to reduce developer risks and fill renovation cost gaps. The strategies aim to create a profit motive for private redevelopment through clear, predictable and flexible zoning.