DuPage County, IL Rental Property Rules: Repairs & Habitability (2026)
Key Facts
- Minimum heat
- 68°F in habitable rooms
- Heating season
- September 1 to May 1
- Code base
- Int'l Property Maintenance Code 2021
- Unfit structures
- Closed/vacated by Building Official
- Applies to
- Unincorporated DuPage County only
Summary
Unincorporated DuPage County rentals must meet the adopted Property Maintenance Code: 68°F minimum heat in habitable rooms each winter, and structures lacking heat, sanitation, or ventilation can be declared unfit for occupancy by the Building Official.
602.2 Residential Occupancies. Dwellings shall be provided with heating facilities capable of maintaining a room temperature of sixty-eight (68) degrees (twenty (20) degrees C) in all habitable rooms, bathrooms and toilet rooms. Cooking appliances shall not be used, nor shall portable unvented fuel-burning space heaters be used, as a means to provide required heating.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 14 Update 1).
Full Breakdown
DuPage County adopted the 2021 International Property Maintenance Code for unincorporated areas under Sec. 8-900, with local amendments. Section 602.2 requires landlords to maintain habitable rooms, bathrooms, and toilet rooms at 68°F from September 1 through May 1, and bars space heaters or cooking appliances as the primary heat source. Section 301.4 lets the Building Official declare a structure unfit for human occupancy if it's unsafe, unsanitary, vermin-infested, or missing required heat, ventilation, or sanitary facilities, and Section 301.5 authorizes closing a vacant unfit structure. The code applies only outside incorporated municipalities, which enforce their own standards.
Violations & Fines
Violations are Property Maintenance Code infractions enforced by the DuPage County Building Division; unfit structures can be posted and closed, and the Building Official can order repairs, inspections, or vacate-and-secure action for noncompliant units.
Frequently Asked Questions
Does DuPage County require a minimum indoor temperature for rentals?
What happens if a rental is declared unfit for occupancy?
Sources & Official References
Other rules in DuPage County
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