Medium to high-density apartment buildings. Two-flats, townhouses, and single family homes are also allowed.
| Zoning Ordinance reference |
ยง 17-2-0104 View the Chicago Zoning Ordinance |
| Floor area ratio | 2 |
| Maximum building height | 45 ft for residential buildings with lot frontage of less than 32 ft, 47 ft when lot front is over that. None for schools and churches. |
| Lot area per unit (density) | 400 sq ft/dwelling unit, 400 sq ft/efficiency unit, 200 sq ft/SRO unit |
| Minimum lot area | 1,650 sq ft |
| On-site open space | N/A |
| 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: Combined width of side setbacks must equal 20% of lot width, and neither setback can be less than 2 feet or 8% of lot width (whichever is greater.) But no setback is required to be wider than 5 feet. |
| 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. |