We are working on a major renovation project on a 1890's historic building in a very dense historic district. The site is the exact footprint of the house, which includes two stone covered patios which cannot be modified due to historical preservation regulations, so we cannot include a vegetated surface to achieve the restore or protect habitat. The project however includes an urban agriculture and green roof area on what is the roof of an adjacent building, which will be leased from the local city authority for urban agriculture for a period of 20 to 100 years. The adjacent roof area which will be used in half the size of project site, but can this be taken into account?, if so, how do you define the project boundary?