While the Mayor's Office is in the building, the staff of thirteen municipal agencies under mayoral control are located in the nearby Manhattan Municipal Building, one of the largest government buildings in the world.
Meski kantor wali kota terletak di gedung ini, para staf dari 13 lembaga munisipal di bawah kendali wali kota terletak di Manhattan Municipal Building, salah satu gedung pemerintahan terbesar di dunia.