Undefined Outdoor Spaces

Greetings Everyone I'm working on a office project with outdoor spaces within the LEED Boundary. The project's construction phase is almost finished. Originally this was going to be the only building in the project, but during construction, the owner bought the adjacent land and decided to build a second building which is still on early design phase. Originally a design for the outdoor spaces was made by the architects, but the owner idea is that both building will be part of a same development, and will share some of their outdoor spaces. Therefore, the design and construction of some of these spaces have been halted and will resume when the second building's construction begins. Since the spaces I'm speaking about are inside my project's LEED project boundary, but their design will not be defined until some time in the future I don't know how to account for it in this and other credits. Should I exclude this spaces form the boundary? Should I assume a totally impervious surface (performing calculations with the worst case scenario would assure that any other material installed will comply)? Any ideas? Thanks in advance for your help.