Mid-rise and high-rise apartment buildings.
| Zoning Ordinance reference |
ยง 17-2-0104 View the Chicago Zoning Ordinance |
| Floor area ratio | 4.4 |
| Maximum building height | None, but tall buildings require planned development approval (see Sec. 17-13-0600). |
| Lot area per unit (density) | 300 sq ft/dwelling unit, 135 sq ft/efficiency unit, 135 sq ft/SRO unit |
| Minimum lot area | 1,650 sq ft |
| On-site open space | All buildings with people living in them must have at least 36 sq ft of on-site open space per dwelling unit. (See 17-2-0308) |
| Front yard | 15ft, or 12% of lot depth, whichever is less. Alternatively, setback can be the average front yard depth of nearest 2 lots (properties on primary boulevards have a slightly different rule). If any lots to be included in the calculation are vacant, assume that their front yard depths are 15 feet or 12% of lot depth, whichever is less. |
| Side | Townhouses: complicated as hell, see 17-2-0500. All other buildings: none if building abuts the street or alley, or if building covers less than 50% of its lot. If more than 50%, building's side setbacks must equal 10% of lot width or 10% of building height (whichever is greater), but no setback needs to be wider than 20 ft. |
| Back yard | For buildings with under 20 dwelling units, of which at least 33% are "accessible": 50 ft or 24% of lot depth, whichever is less. For other buildings: 50 ft or 30% of lot depth, whichever is less. |