Accessory Structures in Tazewell County, IL (2026)
4 rules for unincorporated Tazewell County, Illinois.
Verified from official government sources
ADU Rules
Tazewell County allows one accessory dwelling per lot in residential and agricultural districts, but only if the same owner occupies the principal home, the two share a driveway, and the accessory unit stays between 350 and 800 square feet. Renting it to non-family members is prohibited.
Tazewell County Accessory Dwelling Unit Rules
Some RestrictionsTazewell County Code of Ordinances § 157.055
An accessory dwelling shall be permitted in any residential and agriculture district in accordance with the following requirements: (A) The principal use of the lot shall be a single-family dwelling; (B) No more than one accessory dwelling shall be located on a lot; (C) The accessory dwelling shall be owned by the same person who occupies the habitable principal dwelling; (D) The accessory dwel...
ADU Owner Occupancy
An accessory dwelling in unincorporated Tazewell County must be owned by the same person who occupies the habitable principal dwelling on the lot, under Zoning Code Section 157.055(C). Only one accessory dwelling is allowed per lot, and it has to share the principal home's driveway.
Tazewell County ADU Owner-Occupancy Requirement
Some RestrictionsTazewell County Code of Ordinances § 157.055(C)
An accessory dwelling shall be permitted in any residential and agriculture district in accordance with the following requirements: (A) The principal use of the lot shall be a single-family dwelling; (B) No more than one accessory dwelling shall be located on a lot; (C) The accessory dwelling shall be owned by the same person who occupies the habitable principal dwelling; (D) The accessory dwel...
ADU Rental Restrictions
Tazewell County's accessory dwelling standards flatly bar renting the unit to anyone outside the family: Section 157.055(H) states the accessory dwelling shall not be used for rental property for non-family members. The unit can be occupied by relatives but cannot be leased on the open market.
Tazewell County Bars Renting Out ADUs to Non-Family
Significant RestrictionsTazewell County Code of Ordinances § 157.055(H)
An accessory dwelling shall be permitted in any residential and agriculture district in accordance with the following requirements: ... (G) An accessory dwelling may be located in an unattached garage for the residents of the principal dwelling. (H) The accessory dwelling shall not be used for rental property for non-family members; and (I) A 911 address shall be obtained for the accessory dwel...
Shed & Carport Rules
In unincorporated Tazewell County's residential districts, Section 157.046 caps the combined ground floor area of all accessory buildings on a lot to whichever is greater: the house's own footprint, or 4% of the first acre plus 1% of every acre after that. Sheds also cannot sit in the required front yard.
Tazewell County Accessory Building Size Limits
Some RestrictionsTazewell County Code of Ordinances § 157.046
(B) In the residential districts without a variance, the aggregate ground floor area of all accessory buildings on a lot shall not exceed the greater of: (1) The ground floor area of the dwelling on that lot which shall include any attached structures, except decks or open porches; (2) Four percent of the area of the lot for the first acre plus 1% of all area above one acre; or (3) Lot size of ...
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