Most landlords in Naperville and across DuPage County think they're screening tenants. What they're actually doing, in a lot of cases, is checking a credit score and calling it a day.
That's not screening. That's wishful thinking.
A credit score tells you how someone handles debt. It tells you almost nothing about whether they pay rent on time to a private landlord who never reports to the bureaus, whether they've had a lease quietly terminated, or whether they left a unit in pieces. The rental history verification piece, meaning actually picking up the phone and talking to prior landlords, is where the real picture comes together.
This post is for rental property owners who want to understand what a thorough rental history check actually looks like, what mistakes are costing people thousands of dollars locally, and why the phone call matters more than any document an applicant can hand you.
In This Guide
Why Rental History Is the Most Underused Screening Tool
Credit reports get all the attention. Background checks, income verification, debt-to-income ratios. Owners obsess over the numbers on paper while treating the rental history call like optional homework.
Here's what that costs.
We worked with an owner managing a single-family home in Downers Grove who approved a tenant based almost entirely on a solid credit score. No calls to prior landlords. Within four months, the tenant was two months behind on rent. When the owner dug in, it came out that the tenant had been informally pushed out of a previous unit. One phone call to that prior landlord would have surfaced it. Total damage: over $4,500 in lost rent and legal fees before everything was resolved.
A single eviction in DuPage County runs $3,000 to $6,000 or more once you factor in court costs, legal fees, and the rent you're not collecting while the process drags on. The DuPage County Courthouse in Wheaton handles these forcible entry and detainer filings, and the process is not fast.
“A single eviction in DuPage County runs $3,000 to $6,000 or more once you factor in court costs, legal fees, and the rent you're not collecting while the process drags on.”
One bad tenant placement can wipe out a year or more of management fee savings.
The Problem With Written Reference Letters
A lot of applicants show up with a reference letter already printed and ready to go. It looks professional. It says great things. And it might be completely fabricated.
Anthony, our owner and the person who handles a lot of our leasing conversations with new clients, caught exactly this situation. An applicant submitted a glowing written reference from a "previous landlord." When Anthony independently looked up the property and called the number on the letter, it connected to the applicant's friend pretending to be a landlord. Application denied before a lease was ever signed.
Reference letters can be written by anyone. The landlord contact information in them needs to be verified through public property records or a third-party source, not just taken at face value from the document itself.
Why You Need to Call at Least Two Prior Landlords
The most recent landlord is the one an applicant manages most carefully. They know they need that reference. They've been on their best behavior for the last three months.
Go back one landlord further. That's often where the pattern shows up.
Contacting a minimum of two prior landlords is standard practice on every application we process. One prior landlord is rarely enough to detect a behavioral pattern, especially in a market like Naperville and Downers Grove where a lot of applicants are former homeowners with limited traditional rental history or corporate relocation tenants who lived in other states before landing here.
Corporate relo tenants are common in this area. Verifying out-of-state landlord references means a direct phone call, not a written reference form. A company in Aurora or a medical system in Naperville can relocate dozens of employees annually, and each one arrives with a rental history that lived in a market you're not familiar with. That requires extra diligence on the front end.
What Questions to Actually Ask
Most owners who do make the landlord call ask one question: "Would you rent to them again?" Then they interpret any non-committal answer as a yes.
That question is too easy to dodge. Prior landlords are sometimes vague because they don't want legal exposure, not because the tenant was fine.
Better questions to ask:
- Did they give proper notice before moving out?
- Were there any lease violations during their tenancy?
- Was the unit returned in good condition, or were there damage charges?
- Did they ever fall behind on rent, even temporarily?
- Why did they leave?
These questions require specific answers. Vague responses to specific questions are themselves a signal worth noting.
And one more thing: be skeptical of an overly enthusiastic reference. A current landlord who can't say enough wonderful things about a tenant who is trying to move mid-lease is sometimes a landlord who is desperately trying to get that tenant out. A neutral, matter-of-fact response carries more credibility than an effusive one.
Screening Speed Is Not an Excuse to Cut Corners
One owner pushed back on thorough rental history checks because she felt it slowed down placement. We told her our average days on market is 8 days. That's with screening included.
After hearing that, she agreed to the full process. The tenant placed through Yellow Key has since renewed twice. At $200 per renewal, that's a fraction of what a full re-leasing cycle costs, both in fees and in the time it takes to re-verify, re-market, and re-screen all over again.
Speed and thoroughness are not opposites if the process is built correctly.
Red Flags That Rental History Calls Reveal
Here are the things that show up on phone calls with prior landlords that almost never appear in any document an applicant submits:
- Informal push-outs: Tenant was asked to leave quietly without a formal filing. No court record. No credit hit. Just gone.
- Prior eviction filings that didn't complete: Some industry observers note that a prior eviction filing may correlate with a higher likelihood of future housing instability, though reliable, peer-reviewed figures on exact re-filing rates are difficult to come by.
- Lease violations that were tolerated: Unauthorized occupants, noise complaints, pet damage, unpaid utilities.
- Short notice or no notice at all on move-out: A strong predictor of how they'll leave your unit.
- Undisclosed prior eviction in another county: We had an owner in Elmhurst whose previous manager had approved a tenant using only a credit check. When Yellow Key took over management and the lease came up for renewal, a standard rental history review turned up an undisclosed prior eviction filing in Kane County. The owner chose not to renew. Problem avoided.
In suburban Chicagoland, many tenant disputes settle before an eviction is formally filed. That means court records alone miss a significant portion of the real story. The landlord call fills that gap.
Illinois Law and FCRA: What Owners Need to Know
If you use a third-party screening service to pull rental history data, you're working with a consumer reporting agency under the Fair Credit Reporting Act. Willful violations — including failing to provide required adverse action notices — can expose you to statutory damages between $100 and $1,000 per violation, plus actual damages, attorney's fees, and potentially punitive damages; negligent violations allow recovery of actual damages and attorney's fees.
Illinois landlords who deny applicants based on screening information are generally required to provide adverse action notification, in keeping with federal Fair Credit Reporting Act (FCRA) requirements. The Illinois Human Rights Act adds another layer of exposure if denials appear inconsistent or discriminatory.
DuPage and Will County landlords operate under somewhat more landlord-friendly rules than those who own inside the City of Chicago, where the Chicago RLTO applies. But that doesn't mean suburban landlords operate without legal obligations. Proper documentation and consistent screening criteria applied to every applicant are the baseline.
We manage all of this through Rentvine, which gives our owners a full audit trail of every application, screening result, and communication. That documentation matters if a denial is ever questioned.
How Yellow Key Handles Rental History Verification
We screen every applicant against a defined set of criteria before anything goes to an owner for a decision. That includes direct phone contact with prior landlords, not just digital reference requests, and we go back at least two landlords on every application.
The leasing fee at Yellow Key is equal to one month's rent. That investment only holds its value if the tenant placed is the right one. Thorough rental history verification is how we protect that placement.
We've been doing this since 2004, and in 21 years managing single-family homes, multi-family properties, and townhomes and condos across DuPage, Kane, and suburban Cook and Will counties, we've seen what happens when this step gets skipped. The math is not complicated. A few extra calls on the front end is a lot cheaper than $4,500 in losses after the fact.
One owner described working with us this way: "Anthony listens and communicates quickly. He always has the owner's best interests. Yet, the tenants are happy, too." That balance is only possible when the screening process is solid from day one.
If you're a property owner who's ever approved a tenant and then held your breath for the first few months, we're happy to have a conversation about how we handle the process differently.
FAQ
How far back should I check a tenant's rental history?
Most screening professionals recommend going back at least three to five years. Two prior landlords is a reasonable minimum for any applicant. If an applicant has a gap in rental history, ask what they were doing during that period and whether mortgage payment history or utility account records can fill in the picture.
Can I legally deny an applicant based on a previous eviction filing, not a completed eviction?
In Illinois, if you consider prior eviction history in your screening decisions, be aware that state and local laws governing what eviction records can be used—and how—have been evolving; consult an Illinois attorney to ensure your current screening criteria comply with applicable law and are applied consistently across all applicants. Inconsistent application of screening criteria can create Fair Housing exposure. Document your criteria in writing and use them the same way every time.
What if a prior landlord won't answer questions or gives only yes/no responses?
That can itself be informative. A prior landlord who is evasive or unusually brief may be avoiding liability rather than actively vouching for the tenant. Try asking more specific questions about notice given, property condition, and lease violations. If you can't get useful information from the most recent landlord, going back to an earlier one often tells you more.
Does a strong credit score mean I can skip the landlord call?
No. A high credit score reflects how an applicant manages loans and credit accounts, not how they treat a rental property or communicate with a landlord. Many private landlords never report rent payments to credit bureaus, so on-time rent history simply doesn't appear on the report at all.
What should I do if an applicant has no prior rental history?
This comes up fairly often in Naperville and nearby areas, particularly with former homeowners who downsized or relocated. In those cases, ask for mortgage payment history, utility account references, or employer verification. The goal is finding evidence of financial reliability and responsible property use through whatever documentation exists.
Does Yellow Key's screening process apply to multi-family and condo units, not just single-family homes?
Yes. We manage single-family homes, multi-family properties, and townhomes and condos, and we apply the same screening standards across all of them. The property type doesn't change the risk of a bad placement.
