Aurora, IL Building Setbacks & Zoning: Setback Rules (2026)
Key Facts
- Front setback
- 30 feet
- Rear setback
- 20 feet
- Interior side setback
- 8 feet
- Exterior side setback
- 15 feet
- Zone
- R-4A Two-Family District
Summary
In Aurora's R-4A Two-Family Dwelling District, structures must sit back 30 feet from the front lot line, 20 feet from the rear, 8 feet on interior sides and 15 feet on exterior sides.
The minimum yard areas required in the R-4A shall be as follows: Front. Thirty (30) feet. Interior side. Eight (8) feet. Exterior side. Fifteen (15) feet. Rear. Twenty (20) feet.
Full Breakdown
Aurora Code of Ordinances § 49-107.9 sets the minimum yard setbacks for the R-4A Two-Family Dwelling District, which governs newly built duplexes and two-family homes citywide: a 30-foot front yard, an 8-foot interior side yard, a 15-foot exterior side yard on corner lots, and a 20-foot rear yard. Setbacks are fixed per zoning district under § 49-105.11, so a different district -- R-1 single-family, for instance -- carries its own numbers; owners must confirm the underlying zoning classification for their Kane, DuPage, Will or Kendall County parcel before siting a structure.
Violations & Fines
Building within the required setback without a variance triggers a stop-work order from the Building & Zoning Division and can force the encroaching wall or addition to be removed or relocated.
Frequently Asked Questions
What's the minimum front setback in Aurora's two-family district?
Do setbacks differ by zoning district in Aurora?
Sources & Official References
Other rules in Aurora
Compare Aurora to another location·View the Illinois building setbacks & zoning overview
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Setback Rules in Nearby Cities
How other cities in this county handle setback rules.