General Definition
A “backyard ancillary dwelling unit” is an ancillary dwelling unit that is located in a building
developed after December 5, 2024, where the only dwelling unit in such building is an
ancillary dwelling unit.
A backyard ancillary dwelling unit may be free-standing or abut another building on the
zoning lot. Where such backyard ancillary dwelling unit abuts a detached, semi-detached
or zero lot line building, and the combination of such buildings meet the respective definitions,
such buildings shall be considered a single detached, semi-detached, or zero lot line building,
as applicable, for the purposes of applying the use and bulk regulations of Article II, Chapters 2
and 3, respectively.