Kane County, IL Building Setbacks & Zoning: Setback Rules (2026)
Key Facts
- Road right-of-way
- 35 feet (accessory)
- Side and rear
- 10 feet; 3 feet from easement
- Narrow lots (≤50 ft)
- 5-foot side setback
- 75 ft back
- Side/rear reduce to 3 feet
- Principal setbacks
- Per zoning district
Summary
For accessory buildings in unincorporated Kane County, the required distance from any road right-of-way is 35 feet, and 10 feet from side and rear lot lines (3 feet from easements). Principal-building setbacks follow the zoning district on the county zoning map.
Distance required from any road right-of-way is (35) feet unless stipulated greater on zoning map or recorded plat. Distance required from side and back lot line is (10) feet and (3) feet from any easement.
Full Breakdown
Kane County's Building & Zoning setback rules for accessory buildings (detached garages, sheds, barns) require: 35 feet from any road right-of-way unless a greater distance is stipulated on the zoning map or recorded plat; 10 feet from side and back lot lines and 3 feet from any easement; and a reduced 5-foot side setback for lots 50 feet or less in width. If an accessory building sits 75 feet or more back from the front property line, the side and rear setback drops to a minimum of 3 feet (still 3 feet from any easement). Principal (residence) setbacks are set by the property's zoning district under the Kane County Zoning Ordinance.
Violations & Fines
Structures placed closer than the required setbacks are zoning violations; the county can deny final approval, require relocation, or pursue enforcement.
Frequently Asked Questions
How far must a shed or garage sit from my lot lines?
Can I place a detached garage closer to the side line?
Sources & Official References
Other rules in Kane County
Compare Kane County to another location·View the Illinois building setbacks & zoning overview
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