§ 14. Application of chapter to uncompleted dwellings. 1. The
provisions of this chapter relating to multiple dwellings erected after
April eighteenth, nineteen hundred twenty-nine, shall not apply to any
multiple dwelling for which plans were on file with the department or a
permit to commence building was issued by the department before August
ninth, nineteen hundred twenty-nine, and the entire building shall have
been completed according to the plans filed with the department, subject
to any lawful subsequent amendment thereto, before July first, nineteen
hundred forty-seven.

2. No provisions of any part of this section shall be deemed to
prohibit the amendment of any plans filed and approved before April
eighteenth, nineteen hundred twenty-nine, if such amendment would have
been lawful before such date, or if such amendment complies with the
requirements of this chapter for alterations to buildings of like class
and kind existing before April eighteenth, nineteen hundred twenty-nine.

3. A permit to commence building issued by the department before April
eighteenth, nineteen hundred twenty-nine, based upon plans filed and
approved for a multiple dwelling described in subdivision one, shall be
deemed to be in compliance with section three hundred.

4. The provisions of this chapter relating to multiple dwellings
erected and occupied as such before April eighteenth, nineteen hundred
twenty-nine, shall apply to the dwellings described in this section;
except, however, that unless otherwise expressly required in article
three nothing in this chapter shall be construed to require any change
in the plans or occupancy of any such dwelling if it be fireproof and
the plans therefore when filed were in compliance with the provisions of
all local laws, ordinances, rules and regulations applicable thereto and
in effect on April eighteenth, nineteen hundred twenty-nine, or were
subsequently amended to comply with such provisions.