| Business | Phone |
| Cook County Bldg & Zoning Dept 69 W Washington St 2830, Chicago 60602 | (312) 603-0500 |
| Cook County Zoning Appeals Brd 118 N Clark St, Chicago 60602 | (312) 603-0540 |
| Cook County Zoning Appeals Brd 69 W Washington St, Chicago 60602 | (312) 603-0540 |