Most rental applications look fine on paper. That's the problem.

A tidy credit report, a filled-in address history, a phone number for the previous landlord. It all checks out — until it doesn't. If you've been a landlord for more than a year, you've probably felt that small pit in your stomach right before a tenant moves in, wondering if you missed something. That feeling is usually right.

Checking rental history properly, and actually talking to previous landlords in a way that surfaces real information, is one of the highest-leverage things you can do before handing over keys. It's also one of the most commonly skipped, rushed, or half-done steps in the whole tenant screening process. This post covers how to do it right — what to verify before you call, what questions actually reveal something useful, and what the answers (or non-answers) mean.

In This Guide

Start With the Address, Not the Phone Number

The single most common mistake we see owners make is dialing the number on the application without checking who actually owns the property first.

A tenant can list anyone as a prior landlord. We've seen it more than once. One owner placed a tenant in a Capitol Hill condo, called the reference number on the application, got a warm and enthusiastic review, and signed a 12-month lease at $3,000/month. He later found out the number belonged to the applicant's current roommate, who had posed as a landlord. A 90-second search of Denver County Assessor records would have caught the mismatch before a single question was asked.

The fix is simple:

1. Pull the property address from the application or rental history report.
2. Cross-reference the owner name against the Denver County Assessor or Colorado's property records database.
3. Compare that name to the landlord contact the applicant gave you.

If they don't match, that's not a minor inconsistency. That's a red flag worth pausing the application over.

What a Rental History Report Actually Tells You

Before you pick up the phone, pull a rental history report. A standard report goes back 7 years — far enough to surface a 2018 eviction that a tenant has quietly left off their application.

This is the move a self-managing owner in Washington Park skipped. He ran one reference call with no standard questions, placed his tenant, and didn't find out until later that the applicant had been evicted from two prior units in Adams County. An eviction history search runs about $35. An eviction filing fee in Colorado typically costs$85 to $135, depending on the claim amount and court., and that's before you account for the several weeks to a few months of lost rent while the process plays out in Denver County court, where hearings are often scheduled 7 to 14 days after filing.

A rental history report will give you:

• Prior addresses and tenancy dates, so you can check for gaps the applicant didn't explain
• Eviction records, pulled from court filings across counties
• Early lease terminations, which sometimes appear separately from evictions
• Judgment history, including unpaid rent or damage awards

The report tells you what happened. The landlord call tells you what it felt like to live through it. You need both.

How to Get a Previous Landlord on the Phone

Here's something most guides skip: previous landlords are busy, and they will not stay on the phone long. We've found the average landlord reference call wraps up in about 2 to 3 minutes before the other party starts winding it down. If you don't have your questions ready and sequenced, the conversation ends before you've learned anything meaningful.

Also, the 72-hour window matters more than people think. If a rental lead goes cold because you waited too long to make this call, you may lose the applicant to a competing unit. Speed and preparation aren't opposites here — you can move fast and still be thorough if your questions are ready before you dial.

Questions that actually work

Generic questions get generic answers. These are more specific:

• "How long did [tenant] rent from you, and would you say the tenancy ended on good terms?"
• "Did they ever pay late, and if so, how often?"
• "Did you have to follow up on any maintenance issues or lease violations?"
• "How did they leave the property?"
• "Would you rent to them again?"

That last question is the one that matters most. A previous landlord who pauses before answering, or who says "sure, probably" without much energy behind it, is telling you something. The words are positive. The hesitation isn't.

What silence and evasion actually signal

A glowing reference from a previous landlord is sometimes the most dangerous response you can get. A landlord who needs a difficult tenant gone has every incentive to tell you the tenant was wonderful. Listen for what they won't say directly. If they pivot away from the lease-violation question, if they answer "would you rent to them again" with "I mean, they paid eventually," or if they volunteer nothing unprompted — those are real signals, not formalities.

The best landlord references aren't necessarily the warmest ones.

The Income Verification Step People Rush Past

Rental history doesn't exist in a vacuum. We also require that applicants document income at 3x the monthly rent. At our average rental rate of $3,000/month in neighborhoods like Washington Park, Cherry Creek, and Central Park, that means verifying $9,000/month in documented income — pay stubs, tax returns, or offer letters for recent hires.

A tenant with a strong credit score but thin income documentation and a short rental history is riskier at this price point than someone with a 680 score and five clean years of verifiable tenancies. Credit measures debt behavior. Rental history measures exactly the behavior that protects your property.

We've talked to a lot of owners who fixate on the three-digit credit number because it feels objective. One owner managing two RiNo units had a standing policy: skip the reference calls if the score was above 700. The tenant he approved had a 715 score and a prior landlord report that would have shown two lease violations for unauthorized occupants. That pattern repeated in his unit within 60 days of move-in.

Colorado-Specific Rules That Change How You Screen

Colorado's HB23-1099 added real compliance requirements to the tenant screening process, including rules around portable screening reports and application fees. Landlords who reject applicants based on screening results may also be required to provide written adverse action notices under applicable state and federal law. If you reject based on a verbal landlord reference alone, without documented screening criteria applied consistently across all applicants, you're creating legal exposure.

Colorado's fair housing laws require landlords to apply the same screening criteria consistently to all applicants on the same listing — so if you contact a previous landlord for one applicant, best practice and anti-discrimination principles strongly support doing the same for every other applicant. If you call references for one applicant and not another, you're building a fair housing liability without realizing it.

And Denver has local tenant protections that go beyond state law in some areas. Knowing how those rules interact with your screening criteria is part of managing here correctly. Gavin, our leasing agent, walks owners through this during onboarding so the criteria are written, consistent, and applied the same way across every application before the first showing is scheduled.

What Happens When the Previous Landlord Is a Relative

This one comes up more than you'd expect. We worked with an owner who came to us after self-managing a townhome in Platt Park. She had accepted a tenant whose previous landlord was listed as a relative — the kind of thing that looks fine until you think about it for 30 seconds. Within four months, that tenant was two months behind on $2,800/month rent and left the unit with $4,200 in damage that the deposit didn't cover.

A relative listed as a prior landlord should always prompt a deeper look. Ask for a second reference from an unrelated prior landlord. Pull the address and verify ownership. If the applicant has only ever rented from family, ask for additional documentation — a longer employment history, a larger deposit, as Colorado law does not cap the size of security deposits landlords may collect, or a co-signer.

It's not a disqualifier. It's a flag that the rest of the screening needs to be tighter.

How We Run This Process Across 60 Properties

We manage 60 properties across Denver, and the screening process runs the same way on every single one. Verification steps are tracked in DoorLoop so nothing falls through between the application and the lease. Every landlord call follows the same question framework. Adverse action notices go out in writing, same day, every time.

That consistency isn't about being bureaucratic. It's about the fact that Colorado's Anti-Discrimination Act and tenant screening statutes require it, and more practically, it means we catch things that a case-by-case process misses.

One client described working with us as "honest and transparent" — those words showed up in his review because he could see exactly what we were doing and why, at every step. That's what a documented screening process looks like from the owner's side.

If you're managing on your own and the process above feels like a lot to run consistently on top of everything else, that's a fair read of the situation. We're open to a conversation.

FAQ

How far back does a rental history check go?

A standard rental history report pulls 7 years of records. That's enough to surface evictions, early terminations, and court judgments that an applicant may have left off their application, even if the incident happened years ago.

What should I do if the previous landlord won't answer my questions directly?

Note exactly what you asked and what they said (or didn't say), and weigh the evasion as part of your decision. Hesitation before "would you rent to them again," or an answer that praises one thing while avoiding another, is information. You don't need a landlord to say something bad to learn something useful.

Can I reject an applicant based on a bad landlord reference in Colorado?

Yes, but Colorado's HB23-1099 requires landlords to accept portable tenant screening reports from prospective tenants and regulates how application fees may be charged, while federal law (FCRA) separately requires a written adverse action notice when rejecting an applicant based on screening report results. You also need to apply your screening criteria consistently across all applicants on the same listing to stay compliant with fair housing rules.

Is a good credit score enough to skip the landlord reference call?

No. Credit score tracks debt repayment behavior, not how someone treats a property or interacts with a landlord. We've seen applicants with scores above 700 who had undisclosed lease violations and eviction history that a landlord call and a $35 report would have surfaced before the lease was signed.

What if a tenant has only rented from family members or roommates?

Treat it as a gap in the verifiable record and compensate elsewhere in your screening. Ask for additional income documentation, a longer employment history, or a co-signer. You're not penalizing the applicant — you're filling in information that a standard landlord reference would normally provide.

How do I verify that the landlord contact an applicant gave me is legitimate?

Cross-reference the property address from the application against Denver County Assessor records and check that the owner name matches the contact the applicant provided. This takes under two minutes and is the most reliable way to catch impersonation fraud before it costs you a lease.