You own a rental, or you're about to buy one. An application lands in your inbox and something about it bugs you. Maybe the income looks thin, maybe the rental history is messy, or maybe you just have a feeling.

Owners are allowed to say no. How and why you say it is where they get into trouble. Fair Housing complaints rarely start with someone who meant to discriminate. They start with a rushed denial, a vague reason, and nothing written down. That's why understanding your tenant screening process before the first application arrives matters so much.

Below we cover who the law protects, how to build screening criteria that hold up, which denials are safe, and how to deliver one properly. We manage around 60 properties here, so this is the stuff we deal with weekly.

In This Guide

You Can Say No, But You Need a Real Reason

Fair Housing doesn't force you to rent to everyone. It says you can't deny someone because of who they are. A legitimate, written, non-discriminatory reason is fine. Income below your standard, a failed identity check, or an incomplete application all qualify.

Here's the test we use. Could you explain the denial in one plain sentence, show the written standard behind it, and point to a past applicant who got the same treatment? If yes, you're probably fine. If no, stop and rethink.

Think of it like a referee. The rule has to exist before the play, not get invented afterward.

Know Who Is Protected

The federal Fair Housing Act protects seven classes:

• Race
• Color
• National origin
• Religion
• Sex
• Familial status
• Disability

Plenty of owners stop there. That's a mistake. Colorado protects additional classes, and source of income is a big one. Denver also has its own anti-discrimination rules layered on top of state law. If you own inside city limits, treat all three levels as applying to you.

Out-of-state investors get caught here a lot. The checklist they learned elsewhere doesn't match what's required here.

Write Your Criteria Before the First Applicant Shows Up

Most landlords think they're being smart when they tighten standards after one bad tenant. They raise the income bar or add a new credit rule. It feels prudent, but it's one of the riskiest moves you can make.

If the next people denied under the new rule happen to belong to a protected class, an investigator sees standards that changed in response to who applied. That looks like a pretext.

Set your criteria before the listing goes live. Apply them to every applicant, in the same order, with the same documents. Changing them mid-cycle is how a normal denial becomes evidence.

What a Solid Written Policy Covers

• Income: The minimum you require, and the documents that prove it.
• Rental history: What you verify and how far back you look.
• Credit: What you review and what counts against an application.
• Identity: ID and application completeness.
• Occupancy: How many people can live in the unit, applied evenly.
• Criminal history: A written policy on how you evaluate it, covered below.

Don't copy a "3x rent" rule from an old template. Colorado limits how much income a landlord can require, so check the current rule before you publish a number.

Income Rules for a Mixed Tenant Pool

This market pulls in students, young professionals, relocating workers from tech and energy, and long-term residents. That means plenty of applicants don't have a standard pay stub. You'll see 1099 contractors, remote workers, and new hires holding an offer letter.

Your policy should say what proof you accept for each situation. Bank statements, tax returns, and offer letters can all be written in as options. Then you apply them the same way every time.

Say an applicant sends a signed offer letter and you accept it, then the next applicant sends the same thing and you refuse it. That inconsistency is the problem, not the document.

Section 8 and Other Housing Vouchers

This one trips up owners constantly. Colorado treats source of income as protected, so you can't turn someone down just because they pay with a housing voucher.

Say an owner tells their manager, "No vouchers, I've had bad experiences." Following that instruction exposes the owner and the manager to a Fair Housing complaint. The bad past experience doesn't change that.

One more update. Since January 1, 2026, an applicant paying with a housing subsidy can hand you a portable tenant screening report that doesn't have to include a credit report, credit score, or adverse credit events. Check the current rules on how that affects your process.

Assistance Animals Are Not Pets

Your pet policy is up to you. At our company it depends on each owner's wishes. But emotional support animals are generally treated as a reasonable accommodation in Colorado, not as pets, whatever the lease says about pets.

Denying an applicant because of an ESA, or charging a pet fee for one, can count as disability discrimination under federal and Colorado law. That applies to single-family homes, multi-family, townhomes, condos, and student housing alike.

You can verify a request the way the law allows. You can't treat it like a pet application.

Criminal History and Evictions Need a Written Policy

Blanket rules like "no criminal record, ever" and "no evictions, ever" are risky. Colorado limits how landlords can use certain records, and blanket bans can still raise disparate-impact claims under the federal Fair Housing Act.

Picture a landlord who rejects an applicant with a record but never wrote down how records are evaluated. If a protected group is disproportionately affected, that denial looks arbitrary. Nothing on paper explains it.

A better approach is a short written policy. Spell out what you consider, how recent it has to be, and how it relates to tenancy. Then check the current Colorado limits before you finalize it.

Watch Your Listing Language

Discrimination isn't always in the denial. Sometimes it's in the ad.

Phrases like "perfect for young couples," "ideal for professionals," or "quiet building" can signal a preference against families with children. Say a landlord has always rented to young professionals and writes that into every listing. Even without turning anyone away, that language can be a familial status problem under the federal act.

Describe the property, not the person. Say "two bedrooms, fenced yard, 10 minutes to light rail." Skip anything about who should live there.

Deliver the Denial the Right Way

Verbal "no" is not a safe plan. Colorado requires written reasons for a denial, so put it in writing and check the current statute for the timing rules.

If a consumer report played any part in the decision, federal law adds an adverse action notice. The applicant can also request a free copy of that report within 60 days. And never say the screening company made the decision. You did.

Here's the order we follow:

1. Check the file against your written criteria. Does the denial match a standard that existed before the application?
2. Write the specific reason."Income did not meet our written standard" beats "not a good fit."
3. Send the required notices in writing. That includes the FCRA notice if a report was involved.
4. Keep everything. Application, criteria, notices, and dates.

Our leasing agent Gavin Kelly handles applicant communication, and every decision gets logged in DoorLoop. Those time-stamped records matter if a denial is ever challenged.

Which Reasons Hold Up

Why the Stakes Are Real

A first Fair Housing offense can run up to $26,262 per violation under current federal figures. On a $3,000 rental, which is close to the average rent across our portfolio, that's close to nine months of income gone. That's before legal fees.

If you've read landlord tips Denver Colorado reddit threads, you've seen owners swear they can reject anyone they want. They're wrong, and the threads don't mention what the investigation costs. Free landlord tips Denver Colorado threads rarely include the paper trail.

Also check your Denver rental license requirements and use the Denver rental license lookup so your licensing is in order alongside your screening.

How a Manager Handles This

Screening is one place a manager earns the fee. We've been doing this for 15 years, across single-family homes, multi-family, townhomes, condos, and student housing. Same written criteria, same process, every applicant.

Our full-service leasing is one month's rent, and management is 10% monthly, all-inclusive, with no maintenance markups. We also back our placements with a written Leasing Guarantee. If a tenant we place doesn't work out in the first year, we re-lease the property and the leasing fee is on us.

One owner described the experience this way: "They are very honest and transparent... accurate and timely communication." That's the standard we aim for with owners and applicants.

If screening feels riskier than it should, we're open to a conversation.

FAQ

Can I reject an applicant just because I have a bad feeling?

No. A feeling isn't a documented reason, and it becomes the only explanation if the denial is questioned. Base every decision on written criteria you applied to all applicants.

Do I have to tell an applicant why I denied them?

Yes. Colorado requires written reasons for a denial, and federal law adds an adverse action notice when a consumer report played any part. Check the current statute for exact timing.

Can I refuse an applicant who pays with a housing voucher?

No. Source of income is protected in Colorado. You can screen voucher holders on your written criteria, but not reject them for using a voucher.

Can I have a blanket no-criminal-record policy?

It's risky. Colorado limits how certain records can be used, and blanket bans can still raise disparate-impact claims under the federal Fair Housing Act. Use a written, case-by-case policy and verify current limits.

Can I charge a pet fee for an emotional support animal?

No. Emotional support animals must be accommodated in Colorado regardless of your pet policy, and charging a pet fee for one can count as disability discrimination.