Section 27-111
§ 27-111 Continuation of lawful existing use. The lawful occupancy and
use of any building, including the use of any service equipment therein,
existing on the effective date of this code or thereafter constructed or
installed in accordance with prior code requirements, as provided in
section 27-105 of article one of this subchapter, may be continued
unless a retroactive change is specifically required by the provisions
of this code.
Section 27-112
§ 27-112 Change in occupancy or use. Changes in the occupancy or use
of any building may be made after the effective date of this code,
subject to the provisions of section 27-217 of article twenty-two of
this subchapter. After a change in occupancy or use has been made in a
building, the re-establishment of a prior occupancy or use that would
not be lawful in a new building of the same construction class shall be
prohibited unless and until all the applicable provisions of this code
and other applicable laws and regulations for such re-established
occupancy or use shall have been complied with. A change from a use
prohibited by the provisions of this code, but which was permitted prior
to the effective date of this code, to another use prohibited by the
provisions of this code shall be deemed a violation of this code.
Section 27-113
§ 27-113 Continuation of unlawful existing use. The continuation of
the unlawful occupancy or use of a building after the effective date of
this code, contrary to the provisions of this code, shall be deemed a
violation of this code.