The defined passageway and space between buildings regulation does not apply to the ADU or  any residential building on the same Lot during the approval or construction of an ADU, whether through a zoning review, building permit plan check or inspection.  In the event that new (non-ADU) structures or additions to structures are constructed on the site subsequent to the creation of the ADU, any applicable regulations pertaining to passageways or  space between buildings would apply to the new structure or addition, consistent with the Zoning Code standards in place at the time that the plan check fee for the structure or addition is paid in  accordance with LAMC 13B.10.1.B.2.