There shall be a Building and Housing Code Appeals Board, which shall consist of five members appointed by the Mayor, one member to be appointed for five years, one for four years, one for three years, one for two years and one to serve for one year, and thereafter each new member to serve five years of until his successor has been appointed. Vacancies in such Board, occurring otherwise than by expiration of such term, shall be filled for the unexpired term. The Mayor shall designate one of the members to serve as Chairman and one as Vice Chairman for such term as the Mayor shall designate. Compensation of the members of said Board shall be fixed by the Board of Estimate and Contract. The Commissioner of Buildings shall designate a clerical employee of the Department of Buildings to act as Executive Secretary to the Building and Housing Code Appeals Board. The said Board shall appoint such other subordinates as may be prescribed by the Board of Estimate and Contract.
No fewer than three of the five members shall be licensed professional engineers, architects or builders or superintendents of building construction, each of at least 10 years' experience for five years of which he shall have been in responsible charge of work; and at no time shall there be more than two members of the Board selected from the same profession or business, and at least one of the professional engineers shall be a licensed structural or civil engineer with architectural engineering experience.