* § 264. Conversion of certain dwellings. 1. Notwithstanding any
inconsistent provision of this chapter or of any other law, it shall be
lawful until July first, nineteen hundred forty-nine, for any owner to
convert a non-fireproof dwelling which is not of frame construction, not
more than a basement and two additional stories in height, and not
occupied by more than two families, for occupancy by not more than three
families, in accordance with the provisions of this section, providing
such dwelling was existing on April eighth, nineteen hundred forty-six,
or was erected thereafter under plans on file with the department on or
before such date.

2. The provisions of article six of this chapter shall not apply to
conversion of dwellings under this section, except in so far as
compliance therewith is expressly required as provided in or pursuant to
this section.

3. Conversion of such dwellings under this section must be made:

a. In full compliance with the provisions of sections one hundred
seventy-six, one hundred seventy-seven, and one hundred eighty-eight, of
subdivision two of section one hundred eighty-nine, and of section two
hundred;

b. In full compliance with the provisions of section one hundred
eighty-five, except that if a cellar ceiling is plastered and in good
repair only the area of the ceiling over any boiler located in the
cellar and for three feet beyond need be covered with fire-retarding
material;

c. In full compliance with the provisions of section one hundred
eighty-seven unless such conversion was completed under authority of
this section before July first, nineteen hundred forty-seven, and

d. In compliance with such additional provisions of article six of
this chapter, and no other, as may be specifically required by, and in
accordance with, rules and regulations of the department where the
conversion is proposed to be made.

4. A plan of alteration to effect conversion of any such dwelling
under this section shall be filed with such department and, when
approved by it, shall constitute a lawful plan for three family
occupancy of such dwelling.

* NB Expired July 1, 1949