"Commercial property" means any property that is not included in the definition of "residential property."
"Residential property" means dwellings categorized as in Group R-3, R-4, or R-5 pursuant to N.J.A.C. 5:23-3.14 or a single dwelling unit, which is the only unit served by an elevator, escalator, or moving walkway.
N.J. Admin. Code § 13:44M-5.2