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RS-3 Residential Single-Unit District

Detached single family homes and two-flats.


Zoning Ordinance reference ยง 17-2-0102
View the Chicago Zoning Ordinance
Floor area ratio 0.9
Maximum building height 30 ft for detached house. None for schools and churches.
Lot area per unit (density) 2,500 sq ft
Minimum lot area 2,500 sq ft
On-site open space N/A


Front yard Setback is the average front yard depth of nearest 2 lots (exclude the lot with the least front yard depth from the calculation). If any lots to be included in the calculation are vacant, assume that their front yard depths are 20 feet or 16% of lot depth, whichever is less.
Side Detached house: Combined width of side setbacks must equal 20% of lot width, with neither setback less than 2 feet or 8% of lot width (whichever is greater.) Churches and schools: 12 feet or 50% of building height, whichever is greater.
Back yard 50 ft or 28% of lot depth, whichever is less.