4.5.1. A lot of record, at the time of the adoption of this ordinance, in a residence district, which does not meet the requirements of this ordinance as the area and width requirements may be used for a single-family detached dwelling, provided it meets all the other requirements of this ordinance and other applicable village ordinances, regulations, and codes. This exception shall not apply, however, if:

4.5.1.1. Any adjoining lot or tract of land is held under common ownership or comes under common ownership with such exempted tracts of land subsequent to the effective date of this ordinance; and

4.5.1.2. The combined tract has a land area equal to or more than the requirement for a minimum lot size.

4.5.2. A lot of record existing on the effective date of this ordinance, as referred to above, shall be as follows:

4.5.2.1. In all zoning districts, a lot, parcel, or tract of land which was recorded in the office of the Recorder of Deeds of Lake County prior to the effective date of this ordinance; or

4.5.2.2. In all zoning districts, a lot in a subdivision which was so recorded after the effective date of this ordinance, provided a preliminary plat for such subdivision had been given approval, as provided by the Subdivision Control Ordinance of Vernon Hills, prior to the effective date of this ordinance, and a final plat had been submitted and approved by the village board and thereafter recorded in the office of the Recorder of Deeds of Lake County within the time periods required by such subdivision regulations for filing and application for final plat approval and for recording after approval.

4.5.3. The zoning administrator shall issue a zoning certificate for erecting a single-family detached dwelling on a lot of record, upon compliance with all of the foregoing provisions.