Naperville, IL Rental Property Rules: Repairs & Habitability (2026)
Key Facts
- Kitchen minimum
- 50-60 sq ft
- Living room, 3-5 occupants
- 120 sq ft
- Living room, 6+ occupants
- 150 sq ft
- Code basis
- 2024 IPMC § 404.5
Summary
Naperville caps how many people can occupy a dwelling under the amended 2024 IPMC, tying minimum room-by-room square footage in Table 404.5 to occupant count for every residential unit.
404.5 Overcrowding: Change to read as follows: Dwelling units shall not be occupied by more occupants than permitted by the minimum area requirements of table 404.5. Table 404.5: Minimum Area Requirements — Living room: no requirement for 1-2 occupants, 120 sq ft for 3-5, 150 sq ft for 6 or more; Kitchen: 50 sq ft for 1-5 occupants, 60 sq ft for 6 or more.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 101).
Full Breakdown
Under its local amendment to the IPMC, Naperville limits dwelling unit occupancy to the minimum floor area set in Table 404.5: no minimum living or dining room area for one or two occupants, but 120 square feet of living room and 80 of dining room for three to five occupants, rising to 150 and 100 square feet for six or more, plus a kitchen of at least 50 to 60 square feet depending on occupancy and bedrooms sized under IPMC § 404.4. The property maintenance code adopted at § 5-1H-1 is enforced citywide against both owner-occupied and rental units.
Violations & Fines
Occupying a dwelling unit beyond its Table 404.5 area limits is a property maintenance violation, enforced under the general $50-$500 per day penalty set in § 5-1H-3.
Frequently Asked Questions
Does Naperville limit how many people can live in a rental unit?
What is the minimum kitchen size under Naperville's habitability code?
Sources & Official References
Other rules in Naperville
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