Tenant Red Flags: What to Look For Before You Hand Over the Keys

Most bad tenancies were visible before anyone signed anything.

Not obvious. Visible. There was usually a detail that did not quite add up, noticed and then set aside because the property had been empty for three weeks and this applicant seemed pleasant enough.

This is a list of what is worth noticing. It is also, just as importantly, a list of what is not - because some of the things landlords instinctively treat as red flags are irrelevant, and a few are illegal to act on.

The rule that makes the rest of this usable

Before the list: decide your criteria before anyone applies, and apply them to everybody.

A red flag you notice in one applicant and ignore in another is not screening - it is a hunch, and a hunch you cannot evidence is exactly what you do not want to be defending later. Write the criteria down first. Score every applicant against them. Record the reason.

Everything below is only useful inside that structure.

Financial signals

1. Income that is stated but never evidenced

The single most common one. An applicant tells you what they earn, you like the number, and nobody ever produces a payslip or bank statement. Ask for evidence from every applicant, and treat unevidenced income as no income.

2. Affordability that only works on paper

Set a multiple in advance - many landlords use 30% of gross income, or an annual income of 30x the monthly rent - and hold the line. An applicant who scrapes past it in month one has no room for a fuel bill rising.

3. An offer to pay several months up front, unprompted

Sometimes this is genuine: a self-employed applicant with irregular income, or someone relocating. But it is also the standard way of getting past a reference check that would fail. If it comes instead of references rather than alongside them, ask why.

Note that in some jurisdictions there are limits on how much rent you can take in advance. Check before you accept it.

4. Reluctance to complete a credit check

Applicants are allowed to be uneasy about this. What matters is whether they will do it. Someone with a poor credit history who tells you upfront is usually a better prospect than someone who dodges the question and hopes you forget.

History and references

5. A previous landlord who cannot be reached, or who is a friend

Ask for the landlord of the property they are living in now, and verify independently that the person exists in that role. A reference from a mobile number with no other trace is worth nothing. If they own the property, land registry records are usually public.

6. Gaps in the address history

Not necessarily a problem - people live abroad, stay with family, come out of a relationship. But ask, and see whether the explanation is offered easily or constructed on the spot.

7. The previous landlord is oddly enthusiastic

A landlord desperate to get a difficult tenant out will write a glowing reference. Ask a specific, awkward question - was rent ever late, and by how long? - rather than an open one. Vague praise in response to a specific question is itself an answer.

Behaviour during the process

8. Pressure to skip steps

Urgency is the oldest lever there is. “I need to move this weekend”, “another landlord will take it today”, “can we sort the paperwork after I move in?” Anyone genuinely able to pass your checks is not harmed by your running them.

9. Details that change between conversations

The job title shifts. The number of occupants goes from two to three. The move-in date moves. Individually trivial; together, a pattern worth writing down.

10. Never seeing the property in person

Remote lets happen legitimately. But an applicant who will not view, will not video call, and wants keys posted is the profile most associated with rental fraud and subletting.

11. Vagueness about who is actually moving in

Every adult occupant should be named on the agreement and referenced. “Just me, and my partner might stay sometimes” needs resolving before signing, not after.

What is not a red flag

This half matters as much, and it is where landlords get into legal trouble.

• Being on benefits or housing support. In England and Wales, blanket “no DSS” policies have been found unlawful as indirect discrimination. Assess affordability from total income, whatever its source.
• Having children. Family status is a protected characteristic in many jurisdictions, and refusing on that basis is discrimination in the US under the Fair Housing Act.
• Being self-employed. It changes the evidence you ask for - accounts, tax returns - not the standard you apply.
• A foreign name, an accent, or where someone is from. Race and national origin are protected everywhere this article is likely to be read.
• Age, gender, religion, disability, sexual orientation. Protected characteristics. Not screening criteria.
• A thin credit file. Common among young renters and recent arrivals. Absence of history is not the same as bad history.

The test is simple: does this fact predict whether the rent gets paid and the property is looked after? If it does not, it has no place in your decision.

The one that catches experienced landlords

Not a tenant behaviour at all. It is the empty property.

A void month costs you a month of rent plus the utilities and local property tax you now pay yourself. That pressure is what makes a landlord overlook the reference that never arrived. The applicant did not change - your tolerance did.

The defence is having decided your criteria while the property was still occupied, when nothing was at stake.

Frequently asked questions

Can I refuse a tenant without giving a reason?

In most places you are not obliged to give reasons to the applicant. You should still record one for yourself. The value of the record is not the applicant - it is being able to demonstrate a consistent process if the decision is ever challenged.

How many references should I take?

Two is normal: the current or most recent landlord, and an employer or accountant confirming income. More than that rarely adds information.

What if a good applicant fails one criterion?

You can accept them with a mitigation - a guarantor, a larger deposit where the law permits it - provided you would offer the same mitigation to anyone else who failed that criterion the same way. Consistency, again.

Is a guarantor a substitute for screening?

No. A guarantor needs referencing on the same basis as the tenant, and needs to sign. An unreferenced guarantor is a name on a page.

Make it a process, not a feeling

Our Tenant Screening System is a 15-sheet spreadsheet that holds your criteria in one place, scores every applicant against the same tests, and records the outcome and the reason for each. The dashboard shows your conversion rate and what each signed tenancy actually cost you to find. $29 once, Excel and Google Sheets.

Before the keys change hands, the agreement matters too - see What Has to Be in a Tenancy Agreement and our Residential Lease Agreement Template.

General information for landlords, not legal advice. Anti-discrimination law differs substantially between countries and states, and the protected characteristics listed here are not exhaustive. Confirm your obligations with a qualified solicitor or attorney in your jurisdiction before setting screening criteria.