Winnebago County, IL Building Setbacks & Zoning: Structure Height Limits (2026)

Winnebago County's Unified Development Ordinance (Chapter 90) sets residential height limits in Table 8.2 under Sec. 8.9. The R-A Rural Agricultural Residential, R-1 Single-Family and R-2 Single-Family/Two-Family Districts all cap buildings at 35 feet or 2½ stories, whichever is more restrictive. The R-3 Multi-Family District allows 40 feet or 3 stories, and the R-4 Multi-Family District allows 40 feet/3 stories for a four-family building but steps up to 50 feet or 4 stories for a true multi-family structure. In the R-MH Manufactured Home Park District, Sec. 8.9.3 and Table 8.4 hold every structure type, the park itself, an individual home site, or a stand-alone single-family dwelling, to the same 35-foot/2½-story ceiling that applies in R-A, R-1 and R-2.

These limits stack on top of the district's other bulk standards: the R-A District's minimum lot area, lot width and yards run through Table 8.3's RA-RA, RA-RE and RA-RR subdistricts rather than a single county-wide number, while R-1 through R-4 use flat per-unit lot-area figures ranging from 6,600 square feet down to 1,450 square feet per dwelling unit. A structure that exceeds the applicable height cap needs a variance from the Zoning Board of Appeals, granted only where Sec. 4.2.1 finds a genuine practical difficulty and not mere convenience; the ordinance lists exceeding a height limitation as one of the specific, limited grounds the Board may act on.

The Planning and Zoning Officer enforces the height standard under Sec. 6.1 and may involve the County Sheriff or State's Attorney. A violation is punishable by a fine of up to $500 per offense under Sec. 6.3, with each week of noncompliance treated as a separate offense, and the Officer can revoke a building permit issued in error or through false representation under Sec. 6.4.