The lot or tract appears on a plat of record properly approved by the planning and zoning commission and city council or appropriate authority and filed in the plat records of Bell County.

The site, plot or tract is all or part of a site plan officially approved by the city council in a planned development district after recommendation by the planning and zoning commission, which site plan provides all utility and drainage easements, alleys, streets and other public improvements necessary to meet the normal requirements for platting including designation of building areas and such easements, alleys and streets have been required and properly dedicated and the necessary public improvements provided.

The plot, tract, or lots faces upon a dedicated street and was separately owned prior to the effective date of this ordinance or prior to annexation into the city of Troy, whichever is applicable, in which event a building permit for only one main building may be issued on each such original separately owned parcel. Exceptions to this requirement shall be made when lot lines are shifted within a regularly shaped lot pattern to locations parallel to the original lot line shown on a plat of record.