Question 1

Does Naperville IL have rent control in 2026?

Accepted Answer

No. Naperville, Illinois has no local rent control ordinance, and Illinois state law categorically prohibits any municipality from enacting one. The Illinois Rent Control Preemption Act (765 ILCS 720/2, enacted 1997 as Public Act 89-567) states that a municipality or any other unit of local government may not enact, maintain, or enforce an ordinance or resolution that would have the effect of controlling the amount of rent charged for leasing private residential or commercial property. This statewide preemption bars Naperville City Council, DuPage County Board, and any other local entity from passing any form of rent cap, rent freeze, or rent registry. There is no state-level rent control in Illinois either. The Illinois General Assembly has not enacted any statewide rent cap, and no legislation to repeal or modify 765 ILCS 720 has passed as of 2026. Importantly, the Cook County Residential Tenant and Landlord Ordinance (RTLO, effective June 1, 2021) — which provides just-cause eviction requirements, disclosure obligations, and other tenant protections for suburban Cook County — does NOT apply to Naperville, because Naperville is located in DuPage County (with a small portion in Will County), not Cook County. Naperville landlords may raise rent by any amount at lease expiration with no cap, no formula, and no administrative approval required.

Question 2

What is Illinois's security deposit law for Naperville landlords?

Accepted Answer

Illinois security deposit rules for Naperville landlords are governed by the Illinois Security Deposit Return Act (765 ILCS 710) and the Security Deposit Interest Act (765 ILCS 730), plus any terms in the written lease. Key provisions: (1) Security Deposit Return Act (765 ILCS 710): applies to landlords of 5 or more residential units. Return deadline: within 30 days after the tenant vacates and delivers possession (no forwarding address trigger required — unlike Texas and Missouri). If the landlord deducts for damages, a written itemized statement of deductions with receipts for repairs exceeding $126 (CPI-adjusted amount) must accompany the remaining deposit within 30 days. Penalty for violation: the landlord must pay the tenant twice (2×) the security deposit plus reasonable attorney fees and court costs — this is an automatic penalty upon violation of the Act, without requiring any showing of bad faith. (2) Security Deposit Interest Act (765 ILCS 730): applies to landlords of 25 or more residential units in municipalities with a population of 25,000 or more. Naperville (~155,000) clearly qualifies. Landlords subject to this Act must pay interest on security deposits at the rate set annually by the Illinois Department of Financial and Professional Regulation (DFPR) — typically 0.01%–0.5% in recent years. Failure to pay interest: $100 penalty plus attorney fees. (3) Exemptions: landlords with 4 or fewer units are not subject to 765 ILCS 710's strict return deadline — they are governed only by common law principles requiring return of deposits minus legitimate deductions within a reasonable time. (4) Chicago RLTO (Municipal Code Ch. 5-12): does NOT apply in Naperville. (5) Cook County RTLO (effective June 2021): does NOT apply — DuPage County only. Naperville market practice: deposits of 1–2 months' rent are typical; 2BR Naperville units commonly command $1,800–$3,000 in deposits.

Question 3

What is the eviction process for non-payment in Naperville IL?

Accepted Answer

Illinois Code of Civil Procedure 735 ILCS 5/9-209 governs the eviction notice process for Naperville residential tenancies. For non-payment of rent: (1) 5-Day Notice to Pay Rent or Quit: the landlord must serve a written 5-day notice demanding payment of past-due rent or vacation of the premises. The 5-day count begins the day after service and includes weekends and holidays (unlike Texas, which can exclude non-court days). (2) Cure right: if the tenant pays all rent owed within the 5-day window, the landlord cannot proceed with eviction for that non-payment. The notice must state the specific amount due. (3) Service methods: personal delivery to the tenant; delivery to another adult resident; posting on the door in a conspicuous location (Illinois courts generally require attempted personal service first). (4) After 5 days without payment: the landlord files a Forcible Entry and Detainer (FED) complaint in the DuPage County Circuit Court, 18th Judicial Circuit, at 505 N. County Farm Rd, Wheaton IL 60187 (filing fee approximately $150–$250 depending on the number of defendants and whether a jury demand is filed). (5) Hearing: the court schedules a FED hearing typically 14–21 days after service of the summons. If the landlord prevails, the court issues an Order for Possession. The tenant has 5 days to vacate; if the tenant remains, the landlord requests a sheriff's enforcement (Writ of Possession). DuPage County Sheriff serves the writ and executes the lockout. Total uncontested timeline from 5-day notice to sheriff lockout: approximately 5–8 weeks.

Question 4

Does Cook County RTLO apply to Naperville rentals?

Accepted Answer

No. The Cook County Residential Tenant and Landlord Ordinance (RTLO), which took effect June 1, 2021, applies only to residential properties within Cook County — specifically to all Cook County municipalities except those that have opted out via their own ordinance or have preempting municipal codes (Chicago has its own RLTO; several suburbs have local ordinances). Naperville is located primarily in DuPage County (approximately 99% of Naperville's land area and population) with a small southern portion in Will County. Neither DuPage County nor Will County has enacted an RTLO equivalent. As a result: (1) Naperville landlords are NOT required to provide the Cook County RTLO disclosure notice to tenants. (2) Naperville landlords are NOT subject to Cook County RTLO's just-cause eviction requirements — they may decline to renew a lease for any reason without providing a qualifying just-cause ground. (3) Naperville landlords are NOT required to pay Cook County RTLO-mandated relocation assistance for no-cause terminations. (4) Naperville landlords are NOT subject to Cook County RTLO's specific security deposit interest and return requirements (which are more tenant-protective than 765 ILCS 710 in some respects). Landlords who own properties in both Cook County and DuPage County (including some who own in Naperville plus suburbs like Westmont, Downers Grove, or Lisle that are in DuPage) must be careful to apply the correct ordinance framework to each property based on county location. Naperville properties are solely governed by 765 ILCS 710 and 730, the lease terms, and common-law principles.

Question 5

What major employers drive Naperville IL rental demand?

Accepted Answer

Naperville's economy is anchored by the I-88 Technology Corridor (Illinois Research and Technology Park), which hosts some of the largest corporate campuses in the Chicago suburbs. Key employers: (1) AT&T (AT&T Labs / AT&T Technology Center; 2000 W. Ameritech Center Dr and surrounding campus, Naperville; AT&T has operated significant technology and network operations facilities in Naperville since the Ameritech/Illinois Bell era; approximately 5,000–8,000 employees at the Naperville campus depending on year and reorganizations; one of AT&T's largest campus locations outside Texas). (2) Nalco Water (an Ecolab company; global headquarters at 1601 W. Diehl Rd, Naperville IL 60563; world's largest industrial water treatment company; Koch subsidiary prior to Ecolab acquisition; approximately 3,000–4,500 Naperville employees; $3B+ revenue globally). (3) Nicor Gas (Northern Illinois Gas; 1844 Ferry Rd, Naperville; major Illinois gas utility; ~1,000–1,500 employees). (4) Molex (a Koch Industries subsidiary; 2222 Wellington Ct, Lisle IL 60532, near Naperville border; world's largest connector manufacturer; ~1,500–2,500 Illinois employees). (5) Edward-Elmhurst Health (Edward Hospital, 801 S. Washington St, Naperville IL 60540; Level II Trauma Center; Elmhurst Hospital combined system; approximately 5,000–6,500 employees; DuPage County's largest healthcare employer). (6) Kraft Heinz (nearby Glenview / Northfield campus; many Naperville-based employees). (7) BP Technology Center (Naperville Research Center; BP America; key research and technology hub). (8) Callidus Cloud / SAP (Naperville DuPage County tech offices). The Naperville/Aurora tech corridor along Route 88 is sometimes called 'the research corridor' and historically attracted Lucent Technologies / Bell Labs operations in the 1990s-2000s, contributing to today's highly educated workforce (~60% of Naperville adults hold a bachelor's degree or higher).

Question 6

How do Naperville rents compare to Chicago and other Chicago suburbs?

Accepted Answer

Naperville consistently ranks among the most expensive Chicago suburbs for residential rentals, reflecting its combination of top-rated school districts (Naperville Community Unit School District 203 and Indian Prairie USD 204 — both among Illinois's best), corporate-campus employment density, and high household income (~$110,000–$130,000 median household income). 2026 approximate 1-bedroom rents in Naperville: Downtown Naperville / Riverwalk / Chicago Ave corridor: $1,700–$2,400 (newer luxury apartments; highest demand from AT&T/Nalco professionals and young families); Route 59 corridor (south Naperville, near Edward Hospital): $1,500–$2,100; Older apartment stock (1980s–1990s complexes near Metra stations): $1,300–$1,800; Naperville north / Warrenville Rd: $1,400–$1,950. By comparison: Chicago (Wicker Park, Logan Square): $1,600–$2,400; Chicago downtown/River North: $2,000–$3,500; Aurora (adjacent, smaller city): $1,100–$1,700; Bolingbrook (Will County, near Naperville): $1,100–$1,600; Elgin (Kane County): $950–$1,400; Schaumburg (Cook County, comparable suburb): $1,300–$2,000. Naperville's premium over most suburbs reflects school district quality (a significant driver for families renting while deciding whether to buy), corporate employment anchor, and the Riverwalk/downtown amenity corridor. Because 765 ILCS 720 prohibits rent control in all Illinois municipalities, all pricing is entirely market-driven with no regulatory ceiling.

Question 7

Does Naperville have any local tenant protection ordinances?

Accepted Answer

Naperville has no local tenant protection ordinance as of 2026. Unlike Chicago (Chicago RLTO, Municipal Code Ch. 5-12, enacted 1986) and Cook County (RTLO, effective June 2021), Naperville and DuPage County have not enacted any ordinance addressing security deposit handling, just-cause eviction, relocation assistance, late fees, habitability standards beyond state building codes, or any other tenant-protective measure. The state law framework governing Naperville residential tenancies consists of: (1) Illinois Security Deposit Return Act (765 ILCS 710): 5+ unit buildings; 30-day return; 2× penalty. (2) Illinois Security Deposit Interest Act (765 ILCS 730): 25+ unit buildings in cities ≥25,000; annual interest. (3) Illinois Rent Control Preemption Act (765 ILCS 720): bars any local rent control. (4) Illinois Human Rights Act (775 ILCS 5): prohibits housing discrimination based on race, sex, national origin, religion, disability, family status, sexual orientation, marital status, military status, and other protected classes. (5) Common-law implied warranty of habitability (Jack Spring v. Little, 50 Ill.2d 351): landlords must maintain rental units in habitable condition; tenants may withhold rent or pursue rent escrow for serious habitability failures. (6) Illinois Consumer Fraud and Deceptive Business Practices Act: prohibits deceptive lease terms and landlord misrepresentations. There has been no Naperville City Council discussion of an RTLO-equivalent ordinance through 2026. DuPage County similarly has no RTLO. Illinois legislative efforts to repeal 765 ILCS 720 have not progressed, meaning rent control remains prohibited statewide.

Question 8

What are Naperville's Metra commuter rail connections and how do they affect the rental market?

Accepted Answer

Naperville is one of the most Metra-connected suburbs in the Chicago area, with two separate Metra rail lines serving the city — a feature shared by few other Chicago-area suburbs. (1) Metra BNSF Railway Line (BNSF): Naperville Station at 105 W. Benton Ave — on Chicago Union Station to Aurora route; approximately 26–28 minutes express to Chicago Union Station (fewer stops service); one of Metra's highest-ridership lines due to the dense corporate employment corridor along Route 88. (2) Metra Union Pacific West Line (UP-W): Lisle and Naperville stations on Chicago Ogilvie to Geneva route; approximately 45–55 minutes to Chicago Ogilvie Transportation Center. The dual-line access creates meaningful rental premiums within walking distance (~0.5 mile) of Naperville Station on the BNSF line. Downtown Naperville apartments near the BNSF station command an additional $100–$300/month premium compared to comparable apartments farther from the station, reflecting the commuter value for Chicago-bound workers who rent in Naperville for school district access or housing cost advantages over comparable Chicago neighborhoods. The commuter draw is bidirectional: workers employed in Naperville (AT&T, Nalco, Edward Health) who live in Chicago take the BNSF inbound in reverse-peak, and Chicago-employed workers who live in Naperville for schools take the express outbound. This bidirectional demand creates year-round occupancy rates above 95% in well-located Naperville apartment buildings near both stations.

Illinois rent control law: Naperville is fully preempted

Cook County RTLO: does not apply to Naperville

Illinois security deposit law for Naperville landlords

Naperville eviction: the 5-day notice to pay or quit

AT&T Naperville campus: technology and network operations

Nalco Water (Ecolab): global headquarters on Diehl Road

Edward-Elmhurst Health and DuPage County healthcare

Naperville rental market: 2026 submarket overview

Related Illinois & rent increase resources

Confirm your Naperville unit has no rent cap — free