Building Setbacks & Zoning in Champaign County, IL (2026)
3 rules for unincorporated Champaign County, Illinois.
Verified from official government sources
Setback Rules
Champaign County zones unincorporated land through its Department of Planning and Zoning. Front setbacks are measured from the street centerline: 85 feet on a major street, 75 on a collector, 55 on a minor street, with side and rear yards of 5 to 25 feet by district (Section 5.3).
Champaign County Property Setback Requirements
Some RestrictionsChampaign County Zoning Ordinance Section 5.3, Footnote 3
In no case shall the FRONT YARD, measured from the nearest RIGHT-OF-WAY line, be less than 35' from a MAJOR STREET, 30' from a COLLECTOR STREET, or 25' from a MINOR STREET.
Structure Height Limits
In unincorporated Champaign County, single-family homes in the R-1, R-2 and R-3 districts may rise no higher than 35 feet or two and one-half stories, measured from grade to the roof's midpoint under Section 5.3 of the Zoning Ordinance. Accessory buildings top out at 15 or 24 feet depending on lot size, and violations bring a Zoning Administrator citation and fines up to $500 a day.
Champaign County Residential Structure Height Limits
Some RestrictionsChampaign County Zoning Ordinance Section 5.3 (Schedule of Area, Height and Placement Regulations by District), Footnote 4; Section 3, Definitions (HEIGHT)
HEIGHT: ... As applied to a BUILDING: The vertical measurement from GRADE to a point midway between the highest and lowest points of the roof. ... R-1 Single FAMILY 9,000 80 35 2 1/2 85 75 55 10 20 30% (5), (8) Residence ... 4. The maximum HEIGHT of a residential ACCESSORY BUILDING shall be 15 feet on LOTS less than one acre in area and 24 feet on LOTS one acre or more in area.
Lot Coverage Limits
Champaign County's Zoning Ordinance caps building coverage at 30 percent of lot area in the R-1, R-2 and R-3 residential districts under Section 5.3, rising to 40 percent in R-4 and dropping to 20 percent on AG-1 and CR lots. A separate 16 percent impervious-surface cap under Section 4.3.10.B can override the district's coverage limit on lots held in common ownership since January 1, 1998.
Champaign County Lot Coverage Limits
Some RestrictionsChampaign County Zoning Ordinance Section 4.3.10.B (Storm Water Management and Erosion Control); Section 5.3, Schedule of Area, Height and Placement Regulations by District; Section 3, Definitions (COVERAGE)
COVERAGE: The percentage of the LOT AREA covered by the BUILDING AREA. ... B. The limits on maximum LOT COVERAGE contained in Section 5.3 notwithstanding, no more than 16 percent of the surface of any LOT or LOTS in common ownership on January 1, 1998 shall consist of impervious area, including paving consisting of gravel and rock and including any specific impervious area addition to adjacent ...
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