Case 2: Meter base building/ Submetering tenant space

This might be a redundant question; I'm sorry if it is. We fall into the Case 2 category as we're more than 75% of the building. The base building developer (also in design and pursuing LEED CS) has told us they are not installing metering equipment for the base building systems (chiller, boiler, water). Is it correct to assume that in order to achieve LEED CI EAc3 (M&V), my client must install (or require the base building to install) metering equipment and access for my client for base building systems? If my client will be metering base building systems (boiler, chiller, etc.), should we install sub-metering for the systems that are specific to our space (lighting/ lighting controls, variable air, air distribution, etc.) or meter these for the base building? Many thanks.