As used in this Chapter, the term:
Notwithstanding the above, commercial real estate shall not include single-family residential units such as residential condominiums, townhomes, mobile homes, or homes sold, purchased, leased, or otherwise conveyed or acquired on a unit-by-unit basis even though these units may be part of a larger building or property containing more than four (4) residential units unless used for non-residential purposes.
25 Del. C. § 2602