Champaign County, IL Building Setbacks & Zoning: Structure Height Limits (2026)
Key Facts
- R-1/R-2/R-3 height cap
- 35 feet, 2.5 stories (Section 5.3)
- Accessory building height
- 15 ft under 1 acre; 24 ft over 1 acre
- AG-1/AG-2 agricultural districts
- No numeric height cap (footnote 10, NR)
- Applies to
- Unincorporated county area only
- Maximum fine
- $500 per day violation (Section 10.2.3)
- Appeal route
- Variance from Zoning Board of Appeals, Sec. 9.1.9
- Tower exemption threshold
- 100 feet before Special Use Permit required
Summary
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.
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.
Full Breakdown
3, Schedule of Area, Height and Placement Regulations by District, which applies only to the county's unincorporated area; Champaign, Urbana, Rantoul, Savoy and Mahomet enforce their own municipal codes inside city limits. For the R-1 Single Family Residence, R-2 Single Family Residence and R-3 Two Family Residence districts, the schedule caps Maximum HEIGHT at 35 feet and two and one-half stories, alongside minimum lot sizes of 9,000 square feet (R-1) or 6,500 square feet (R-2 and R-3). By contrast, the AG-1 and AG-2 agricultural districts and the B-1 and I-1 business/industrial districts carry footnote 10, 'NR' for No Requirement, meaning the schedule sets no numeric height ceiling on farmland or in those commercial zones.
HEIGHT itself is defined in Section 3 as, for a building, 'the vertical measurement from GRADE to a point midway between the highest and lowest points of the roof,' with separate measurement rules for detached and attached accessory structures. 3 sets a distinct cap for residential accessory buildings: 15 feet on lots under one acre and 24 feet on lots of one acre or more. 1 exempts towers, spires, chimneys, silos and similar mechanical appurtenances up to 100 feet from the HEIGHT rules entirely, provided they meet FCC, FAA and IDOT Aeronautics siting standards; anything taller needs a Special Use Permit issued through the County Board process. 9, not simply a building permit.
Violations & Fines
Building above the district's HEIGHT limit without an approved Special Use Permit or variance is a zoning violation the Zoning Administrator investigates on written complaint under Section 10.1. Section 10.2.3 makes any zoning violation a petty offense punishable by a fine not exceeding $500, and treats each day the violation continues after notice as a separate offense. The county may also sue in equity to force removal or alteration of an oversized structure under Section 10.2.2.
Frequently Asked Questions
How tall can a house be in unincorporated Champaign County?
Is there a height limit for a shed or detached garage?
Does the county cap height on farmland?
What happens if a structure exceeds the height limit?
Sources & Official References
Other rules in Champaign County
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