Are facades of existing buildings (not historic) exempt of Requirement number 8 of the Walkable Project Site? 

Requirement 8: "No more than 30% of the primary facade at ground level is without doors or windows, with a maximum interval of 15 feet between doors or windows. 

The primary facade of a new construction project includes the facade of an existing parking garage not to be renovated. Does the 30% include only the portion of the project that is new construction, excluding the existing building, or does the existing building has to be included in the calculation?