The best time to avoid a problem tenant is before they sign the lease. Once someone moves in, removing them—even if they violate the lease—is time-consuming, expensive, and stressful. Prevention through careful screening is infinitely easier than dealing with problems later.

But how do you identify potential issues before they manifest? Experienced landlords develop an instinct for red flags—warning signs that appear during the application and screening process that indicate likely problems ahead.

This guide teaches Irish landlords to recognize the most common red flags at every stage of tenant selection, helping you avoid costly mistakes and select tenants who’ll respect your property and pay rent reliably.

Understanding Red Flags vs. Deal-Breakers

Not all concerns are created equal.

Red flags: Warning signs that warrant investigation or extra scrutiny. May be explainable.

Deal-breakers: Issues that should result in immediate rejection regardless of other factors.

Learning to distinguish between them helps you make nuanced decisions without being either too permissive or unnecessarily rigid.

Application Red Flags

Warning signs often appear in the application itself.

Incomplete Applications

Red flag: Application missing key information or sections left blank.

Why it matters: Shows lack of attention to detail, possible evasiveness, or simply not taking the process seriously.

What to do: Request complete application. If applicant pushes back or continues providing incomplete info, reject.

Sloppy or Disorganized Applications

Red flag: Messy handwriting, crossed-out sections, multiple errors.

Why it matters: May indicate general disorganization or lack of care.

Not always a deal-breaker: Some people struggle with paperwork but are otherwise excellent tenants.

What to do: Assess in context with other factors. Look for patterns of carelessness.

Inconsistent Information

Deal-breaker: Information that contradicts itself within the application.

Examples:

• Employment dates don’t add up
• Current address history has gaps
• Income claims inconsistent across sections

Why it matters: Indicates dishonesty or intentional deception.

What to do: Question the inconsistencies. If explanations don’t satisfy or applicant becomes defensive, reject.

Employment Gaps Not Explained

Red flag: Significant gaps in employment history without explanation.

Why it matters: Could indicate:

• Incarceration
• Termination for cause
• Inability to hold jobs
• Financial instability periods

Not always disqualifying: Legitimate gaps include education, caring for family, illness, career transitions.

What to do: Ask directly about gaps. Accept reasonable explanations with verification.

Frequent Address Changes

Red flag: Multiple addresses in short time periods (yearly or more frequent moves).

Why it matters: Could indicate:

• Evictions or lease violations
• Financial instability
• Inability to maintain tenancies
• Conflict with landlords or neighbors

Context matters: Some life situations require frequent moves (military, contract work, students).

What to do: Ask why they moved so often. Check references from multiple previous landlords.

Refuses to Provide Information

Deal-breaker: Unwilling to provide standard screening information.

Examples:

• Won’t provide previous landlord contacts
• Refuses employer verification
• Won’t provide references
• Resists providing required documents

Why it matters: They’re hiding something.

What to do: Reject. No exceptions.

Financial Red Flags

Money issues are the most common cause of landlord problems.

Income Barely Meets Requirements

Red flag: Income is exactly or just barely at your threshold (3-4x rent).

Why it matters:

• No financial cushion for emergencies
• Every expense will be a struggle
• High risk of falling behind on rent
• One financial setback = missed rent

What to do:

• Verify income extra carefully
• Check for additional income sources
• Assess financial stability beyond just current income
• Consider requiring guarantor
• May prefer applicant with more comfortable margin

Can’t Verify Income

Deal-breaker: Unable or unwilling to prove claimed income.

Examples:

• Payslips look altered or fake
• Employer can’t verify employment
• Self-employment claims without documentation
• Vague about income sources

Why it matters: Either income is overstated or doesn’t exist.

What to do: Reject unless they can provide legitimate verification.

Recently Started Employment

Red flag: Started current job within last 1-3 months.

Why it matters:

• Probation period—could lose job easily
• No employment stability proven
• May be between jobs frequently
• No demonstrated ability to hold position

Not always disqualifying: Career advancement, recent graduate, relocated for job.

What to do:

• Verify employment extra carefully
• Check previous employment history
• Assess overall employment pattern
• Consider requiring larger deposit or guarantor
• Verify probation period status

Multiple Jobs to Make Income

Red flag: Needs multiple part-time jobs to meet income requirement.

Why it matters:

• Less stable than single full-time position
• More likely one income source ends
• Complex schedule may cause payment issues
• Financial stress

Not disqualifying necessarily: Some people successfully manage multiple income streams.

What to do:

• Verify all income sources
• Check stability of each job
• Assess total income carefully
• Consider work history pattern

Poor Banking/Financial Management

Red flag: Bank statements (if provided) show:

• Frequent overdrafts
• Returned payments
• Account churning
• Living paycheck to paycheck
• Unexplained large expenses

Why it matters: Indicates poor financial management even if income is adequate.

What to do: Weight heavily alongside other factors. Financial irresponsibility usually continues.

Reference Check Red Flags

What references reveal often determines your decision.

No Previous Landlord References

Major red flag: Can’t or won’t provide previous landlord contacts.

Why it matters:

• May have been evicted
• Left on bad terms
• Owes money to previous landlord
• Never actually rented before (different issue)

What to do:

• Ask directly why no references available
• First-time renters should explain clearly where they’ve been living
• If evasive or story doesn’t check out, reject
• For legitimate first-timers, require extra verification and possibly guarantor

Previous Landlord Won’t Provide Reference

Deal-breaker: Contact previous landlord and they refuse to give a reference.

Why it matters: If someone won’t say anything at all (not even neutral verification), the tenancy ended very badly.

What to do: Reject immediately. This is one of the clearest red flags possible.

Lukewarm References

Red flag: References are unenthusiastic or qualified.

Examples:

• “They were okay”
• “No major problems” (emphasis on “major”)
• Hesitation before answering questions
• Damning with faint praise
• “They paid eventually”

Why it matters: Something was wrong even if not major enough to refuse reference entirely.

What to do:

• Ask follow-up questions
• Try to identify specific concerns
• Weight alongside other factors
• Often worth rejecting—lukewarm means problems

“Would Rent Again” Hesitation

Deal-breaker: When asked “Would you rent to them again?” previous landlord:

• Hesitates significantly
• Says “probably” or “maybe”
• Changes subject
• Says “no” outright

Why it matters: This is the single most important question. Hesitation = problems you don’t want.

What to do: Reject. A previous landlord who wouldn’t rent again is telling you everything.

References Don’t Match Application

Deal-breaker: Reference check reveals information contradicting application.

Examples:

• Dates of tenancy different
• Rent amount different
• Employment dates don’t match
• Reason for leaving different
• Position or salary different

Why it matters: Applicant lied on application.

What to do: Reject for dishonesty.

Can Only Provide Family References

Red flag: All references are family members or people who barely know them.

Why it matters:

• Can’t get landlords, employers, or friends to vouch for them
• May indicate problems in past
• Family obviously biased

Not always disqualifying: First-time renters or recent immigrants may legitimately have limited references.

What to do:

• Investigate why only family references
• Require explanation
• If new to country or first rental, verify their story
• Consider guarantor requirement
• Proceed cautiously

Behavioral Red Flags

How applicants behave during the process reveals character.

Aggressive or Entitled Attitude

Deal-breaker: Displays aggressive, entitled, or demanding behavior.

Examples:

• Aggressive tone in communications
• Demands special treatment
• Makes threats (even subtle)
• Entitled attitude about getting the property
• Rude or disrespectful behavior

Why it matters: This behavior will continue and worsen during tenancy.

What to do: Reject immediately. No property is worth dealing with an aggressive tenant.

Excessive Complaints About Previous Landlords

Major red flag: Constantly criticizes previous landlords.

Why it matters:

• Never their fault (always blame others)
• Likely will complain about you similarly
• May be difficult or unreasonable
• Conflict-prone personality

What to do: Probe for reasonable explanations. If pattern of conflict everywhere they go, reject.

Pressure to Skip Screening Steps

Deal-breaker: Attempts to bypass standard screening.

Examples:

• “Don’t call that landlord, call this one instead”
• “Can we skip the credit check?”
• “I don’t have time for all this”
• “I’ll pay extra if we can move faster”
• “Just trust me”

Why it matters: They’re hiding something.

What to do: Reject. Never skip screening regardless of pressure.

Poor Communication

Red flag: Communication issues during application process.

Examples:

• Doesn’t return calls or emails
• Consistently late to appointments
• Misses viewings without explanation
• Vague or evasive answers
• Difficult to pin down

Why it matters: Communication won’t improve after they move in—and good landlord-tenant relationships require good communication.

What to do: If pattern of poor communication, reject or proceed very cautiously.

Too Good to Be True

Red flag: Applicant seems perfect and overeager.

Examples:

• Offers significantly above asking rent
• Wants to pay multiple months upfront
• Offers cash payments
• Will agree to anything
• Pressures for immediate move-in
• Doesn’t ask questions or care about details

Why it matters: Could indicate:

• Urgency due to eviction elsewhere
• Desperation suggesting problems
• Potential scam (especially if cash/wire transfers involved)
• Money laundering

What to do: Don’t be blinded by offers of extra money. Screen just as thoroughly. If anything seems off, reject.

Brings Entourage to Viewings

Red flag: Shows up to viewing with multiple people.

Why it matters:

• May plan to have more occupants than disclosed
• Could be scoping for roommates not on lease
• Intimidation tactic

Not always concerning: Bringing one trusted person for advice is normal.

What to do:

• Ask who everyone is
• Clarify who will be living in property
• Ensure all occupants disclosed on application
• If seems like more people than disclosed, investigate

Shows Disrespect for Property

Red flag: During viewings, shows disrespect.

Examples:

• Rough handling of doors, fixtures
• Smoking during viewing (if property is non-smoking)
• Letting children run wild without supervision
• Making disparaging comments about the property
• Not removing shoes if asked

Why it matters: Preview of how they’ll treat property as tenants.

What to do: Note and weight alongside other factors. Pattern of disrespect = reject.

Document Red Flags

Paperwork can reveal warning signs.

Documents Appear Altered

Deal-breaker: Provided documents look fake or modified.

Examples:

• Payslips with signs of alteration
• Employment letters with inconsistent formatting
• Bank statements that look edited
• IDs that seem fraudulent

Why it matters: Document fraud indicates dishonesty and possibly identity theft.

What to do: Reject immediately and verify nothing suspicious has occurred.

Won’t Provide Original Documents

Red flag: Only provides copies, refuses to show originals.

Why it matters: Easier to fake copies.

What to do: Request originals for verification (can return immediately after viewing). If refused, be very suspicious.

Documents Don’t Match Story

Deal-breaker: Documents contradict what applicant has said.

Examples:

• Says employed one place, payslips from another
• Claims income of X, documents show Y
• Says lived somewhere, address documents show different location

Why it matters: Lying or careless with facts.

What to do: Question discrepancies. If explanations don’t satisfy, reject.

Reluctance to Sign Lease

Red flag: Hesitation about signing standard lease.

Examples:

• Wants to modify standard terms heavily
• Questions every clause
• Asks for unusual exceptions
• Stalls on signing after verbally accepting

Why it matters: May plan not to comply with terms or wants flexibility to break rules.

Not always concerning: Reasonable questions about lease terms are fine.

What to do: Distinguish between reasonable questions and pattern of resistance. If latter, reconsider.

Situational Red Flags

Certain situations warrant extra caution.

Applying Before Viewing

Red flag: Wants to apply without seeing property.

Why it matters: Extreme urgency suggests:

• Eviction elsewhere
• No other options (why?)
• Potential scam

What to do: Insist on viewing before accepting application. If they can’t view, verify their situation thoroughly.

Same-Day Move-In Requests

Red flag: Needs to move in immediately.

Why it matters:

• Likely evicted or given notice elsewhere
• Emergency suggests instability
• No time for proper screening

What to do: Never rush screening, even for urgent situations. If they can’t wait for proper process, reject.

Vague Employment or Income

Red flag: Can’t clearly explain employment or income source.

Examples:

• “I do various things”
• “Consulting” with no clear clients
• “Online business” with no specifics
• “Self-employed” but can’t describe business

Why it matters: Could be:

• Unemployment they’re hiding
• Illegal income
• Unstable or unreliable income

What to do: Require specific verification. If can’t provide, reject.

Multiple Applications from Same Address

Red flag: Several people applying for your property from the same current address.

Why it matters: May be:

• Being evicted and all need to move
• Illegal subletting situation ending
• Overcrowding situation

What to do: Question why multiple people from same address need new accommodation. Investigate carefully.

How to Respond to Red Flags

Identifying red flags is only half the battle—knowing how to handle them matters.

Single Red Flag

Approach: Investigate further.

• Ask direct questions
• Request explanation
• Verify the concerning information
• Assess in context of whole application

Example: Employment gap can be explained legitimately. Ask about it. Accept reasonable explanations with verification.

Multiple Red Flags

Approach: Usually reject.

Why: Pattern of concerns indicates likely problems.

Even if each individual flag could be explained, multiple flags together paint a concerning picture.

Exception: Only if ALL flags have completely reasonable explanations that fully check out.

Any Deal-Breaker

Approach: Reject immediately.

Deal-breakers include:

• Dishonesty on application
• Document fraud
• Refuses screening
• Previous landlord won’t give reference or says wouldn’t rent again
• Aggressive or threatening behavior
• Can’t verify income
• Legal issues that affect tenancy

No amount of other positive factors overcomes a deal-breaker.

Trust Your Instincts

Sometimes you can’t quite identify what’s wrong—but something feels off.

When Your Gut Says No

Trust it.

Years of human evolution have developed instincts that pick up on subtle cues you might not consciously recognize:

• Micro-expressions
• Tone of voice
• Body language
• Inconsistencies you can’t quite pinpoint

If something feels wrong, even with a seemingly good application, that’s valuable information.

Balancing Instinct with Objectivity

Don’t rely solely on gut feelings:

• Could be unconscious bias
• May not be objective
• Hard to defend if discrimination alleged

But don’t ignore them either:

• Investigate further when something feels off
• Look for objective reasons supporting your instinct
• Document any objective concerns you find

Ideal: Objective red flags confirm instinctive concerns.

Documenting Red Flags

Always document concerns for your records.

Record:

• Specific red flags identified
• How you investigated
• Explanations provided (if any)
• Additional verification conducted
• Your assessment
• Decision and reasoning

Why documentation matters:

• Protects against discrimination claims
• Shows objective decision-making process
• Helps you learn from experience
• Useful if issues arise later

FAQ: Red Flags and Warning Signs

Q: What if an applicant has one or two red flags but is otherwise perfect? A: Investigate thoroughly. Single flags with good explanations may be acceptable. Multiple flags or unexplained concerns usually warrant rejection.

Q: Should I give applicants a chance to explain red flags? A: Yes, for red flags (not deal-breakers). But don’t accept weak explanations or become defensive.

Q: What if I reject someone and they claim discrimination? A: Documentation of objective reasons protects you. Ensure decisions based on legitimate factors, consistently applied.

Q: Can I ask about criminal history? A: This is complex. Generally, you cannot discriminate based on spent convictions. Consult legal advice if concerned about this area.

Q: What if references are fine but my instinct says no? A: Investigate further. Look for objective reasons. If you can’t find any, consider whether it might be unconscious bias. If genuine concerns remain, it’s better to pass than force it.

Q: How do I politely reject someone without revealing the red flags? A: “We’ve selected another applicant whose qualifications better match our requirements.” Don’t elaborate or discuss specific concerns.

Conclusion: Prevention Over Problem-Solving

The time to identify problem tenants is before they become your problem. Learning to recognize red flags and responding appropriately is one of the most valuable skills a landlord can develop.

Key principles:

✅ Stay alert: Red flags appear throughout the process ✅ Investigate: Some flags have reasonable explanations ✅ Don’t rationalize: Multiple flags = pattern = reject ✅ Trust instincts: Your gut often knows before your brain ✅ Document: Objective records protect you ✅ Never compromise: Better vacant than occupied by problem tenant

The cost of missing red flags—unpaid rent, property damage, legal fees, stress—far exceeds the cost of a few extra weeks of vacancy while you find the right tenant.

Be patient, be thorough, and be willing to say no. The perfect applicant is out there, and rushing to fill your property with a questionable one helps nobody.

Ready to systematize red flag identification with screening checklists, reference verification workflows, and documentation tools? Try Holp free for 14 days and see how Irish landlords are avoiding problem tenants through better screening.