(1) Building permits for ADUs shall not be issued until the applicant demonstrates that a restrictive conservation easement has been placed on the subject property prohibiting future enlargement of the ADUs, the creation of additional ADUs beyond the limits described above and any further future subdivision of the tract. Issuance of permits for ADUs shall be contingent upon the Montgomery County Department of Health approval for any on-site sewage disposal systems needed; and
(2) Any ADU permitted under this subsection shall be limited to a height of 25 feet, with the exception of historic buildings; and
(3) The ADU shall be located on the same lot as the principle dwelling and shall not be located on its own lot.
See § 116-272E for more information.