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At the 3rd and 2nd basement the building is separated from a common parking (common use parking for several buildings) by a wall built to the property line.
Since the parking is not pedestrian, the IGA boundary, should be the property line, or the inside wall finish?
Thanks
Roberta,
If the wall lies inside the property line, measure to the Dominant Portion (inside finished surface comprising 50% or more of the vertical height).
If the wall lies outside the property line, measure to the property line. You may also want to consider whether the space outside the property line qualifies as Vault Space (in which case it would be included in the Interior Gross Area).