Winnebago County, IL Building Setbacks & Zoning: Setback Rules (2026)
Key Facts
- R-1/R-2/R-3/R-4 front yard
- 30 ft minimum
- R-1 interior side yard
- 6 ft minimum
- R-3/R-4 interior side yard
- 10 ft minimum
- R-1/R-2 rear yard
- 30 ft minimum
- R-3/R-4 rear yard
- 25 ft minimum
Summary
Winnebago County sets minimum front, side, and rear yard setbacks that vary by residential zoning district, from R-1 through R-4.
TABLE 8.2: RESIDENTIAL DISTRICTS BULK AND YARD STANDARDS ... MINIMUM YARD STANDARDS FRONT YARD [R-1] 30 ft [R-2] 30 ft [R-3] 30 ft [R-4] 30 ft ... INTERIOR SIDE YARD [R-1] 6 ft [R-2] 6 ft; minimum of 12 ft between exterior walls of principal structures ... REAR YARD [R-1] 30 ft [R-2] 30 ft [R-3] 25 ft [R-4] 25 ft
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 64).
Full Breakdown
Table 8.2 of the Unified Development Ordinance fixes minimum yard setbacks for each residential district. R-1, R-2, R-3, and R-4 all require a 30-foot front yard. Interior side yards run 6 feet in R-1, 6 feet in R-2 (with a 12-foot minimum between principal structure walls), and 10 feet in R-3/R-4 multi-family (20 feet between walls). Rear yards are 30 feet in R-1/R-2 and 25 feet in R-3/R-4. The separate RA District subdistricts (rural estate, rural residential, rural agriculture) carry their own larger setbacks, including rear yards up to 75 feet.
Violations & Fines
Building or expanding within the required setback without a variance from the Winnebago County Board of Appeals is a zoning violation, subject to a stop-work order and code enforcement action under the county's zoning enforcement provisions.
Frequently Asked Questions
How far must a house sit from the front lot line in Winnebago County?
Can I get a smaller setback than the table requires?
Sources & Official References
Other rules in Winnebago County
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