g. The department may in its discretion let out contracts for the
repairs to be done pursuant to this section in accordance with the
provisions of local laws, ordinances, rules and regulations of the city
applicable to the letting of contracts for public works.
2. a. An "untenanted hazard" is a multiple dwelling or any part
thereof, or any structure on the same premises with a multiple dwelling,
which has been untenanted for a period of sixty days or more and either
is not guarded continuously by a resident caretaker or has any exterior
openings which are not sealed in a manner approved by the department and
is a fire hazard or in a condition dangerous or detrimental to human
life, health or morals.
b. Whenever an officer of the department shall certify that any
multiple dwelling or part thereof is an untenanted hazard, the
department shall so notify the owner by attaching a notice in a
conspicuous place on the premises to such effect, and sending by
registered mail a copy of such notice to such owner, at the address or
addresses registered with the department, or, if no address is
registered with the department and such owner cannot with due diligence
be served personally, by sending a copy of such notice by registered
mail to the last known address of such owner. The department shall also
send a copy of such notice by registered mail to every owner of record
of a mortgage upon such premises, at the address of such owner appearing
in the record of such mortgage in the office in which mortgages are
registered in the county in which such premises are located or, if no
address appear therein, by sending such notice by registered mail to the
person at whose request such instrument was recorded.