I have 1 CI project which is taking place in 2 adjacent buildings (Europe). The client is responsible for both interior spaces in each building, but the client also wishes to treat as 1 LEED Assessment. Is this possible?

Also, how would this be best documented for issues such as energy modelling and IAQ, as the interior spaces could well both be served with two different mechanical/ventilation systems, as well as different envelope, building physics etc attributes.

Thanks