We are looking to certify nineteen concession spaces in an existing airport. The spaces all share one mechanical system and one water source and do not appear to be sub-metered. There will be three separate design teams doing the design and the project will be constructed in four phases under one general contractor. Our questions: Is it possible to certify each individual tenant space or will that require sub-metering each space? Is it possible to achieve cerification for all the spaces as one project if the documentation is tracked accordingly over the total project duration?