High-rise apartment buildings, largely in the Gold Coast. Ground-floor stores are okay, offices aren't.
| Zoning Ordinance reference |
ยง 17-4-0104 View the Chicago Zoning Ordinance |
| Floor area ratio | 3 |
| Maximum building height | None, but buildings taller than city's "building height thresholds" require Planned Development review. |
| Lot area per unit (density) | 400 sq ft/dwelling unit, 300 sq ft/efficiency unit, 200 sq ft/SRO unit |
| Minimum lot area | |
| 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 17-4-0410-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. (Buildings and structures in DR districts are subject to the R district front setback standards of Sec. 17-2-0305.) |
| Side | None |
| Back yard | For detached houses, 28% of lot depth or 50 feet (whichever is less.) For principal buildings, 30% of lot depth or 50 feet (whichever is less), but this only applies to parts of buildings 18 feet or more above grade. |