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Tenant selection: the cost of getting it wrong.

The rent is the headline number. The placement decides whether you collect it. One selection decision carries more of a property’s annual return than any other an owner makes.

Owners compare properties on yield, suburbs on growth, and managers on fees. Almost nobody prices the decision that quietly outweighs all three: who is handed the keys. A well-selected tenancy runs for years and barely makes a sound. A poorly selected one announces itself in arrears letters, tribunal dates and a property returned in worse condition than the bond can cover — and its full cost is consistently underestimated, because most of it accrues after the tenancy fails, not while it runs.

The example that follows is deliberately simple: a $600-a-week property, the assumptions set out, and the arithmetic left visible. The inputs are not unusual — a standard letting fee, the time required before possession and re-letting, and a conservative allowance for vacancy. The point is not any single line item. It is how quickly they combine.

~14 wksRent equivalent a failed tenancy can consume — worked example below
$86/dayThe vacancy meter on a $600/week property — the pressure that rushes decisions
$2,490Cost of one avoidable turnover — letting fee, advertising, vacancy
EveryApplication claim treated as unverified until confirmed — the Pillar standard
I  ·  The Ledger

What a failed placement actually costs.

Take a $600-per-week tenancy that fails in its first year. The bond — four weeks — is the only buffer, and it is almost always consumed by the first claims against it. What follows is a typical sequence, costed conservatively:

  • Unpaid rent beyond the bond. Arrears accrue while the formal notice process runs its course. Four weeks not recovered: $2,400.
  • The recovery timeline. Tribunal listing and regaining possession take time even when everything goes your way. Three further weeks without income: $1,800.
  • Make-good beyond the bond. Cleaning, repairs and rubbish removal the bond no longer covers: $1,500.
  • Re-letting. Letting fee and advertising to find the replacement: $990.
  • The vacancy in between. Two and a half weeks to re-let after make-good: $1,500.
≈14 weeksof rent at risk in one failed placement · worked example, $8,190
Roughly a quarter of the year’s gross income — before counting the owner’s own hours, or the discount often accepted to re-let quickly after a difficult tenancy. Set against it, the rent “saved” by taking the first applicant rarely exceeds a week or two.

These are ordinary costs, not exceptional ones. Because they fall at different stages — arrears, recovery, make-good, vacancy and re-letting — they are rarely viewed as one number. That is why the commercial weight of the selection decision is so easily underestimated.

II  ·  The Pressure

Vacancy pressure makes the decision for you.

Poor placements are rarely careless. They are rushed. An empty property is a silent meter — $86 a day on our example — and every day it runs, the case for “the application in hand” strengthens against the application worth waiting for. The meter is real; that is precisely what makes it dangerous. It prices the next seven days perfectly and the next twelve months not at all.

The pressure has a second turn. A placement made under pressure breaks down more often; the breakdown creates another vacancy; the new vacancy applies the same pressure again. Owners can cycle through this loop for years without ever seeing it priced.

The vacancy meter prices the next seven days perfectly — and the next twelve months not at all.

Our Reading

A week of patience is the cheapest insurance in residential property. The discipline is holding the selection standard while the meter runs — which is easiest when the standard is written down and the assessment is evidence, not impressions.

The Same Property · Two Decisions

Two tenancies. Three years apart in outcome.

Cumulative net rental income on the same $600/week property over three years. Tenancy A: placed on verified evidence; runs with two renewals. Tenancy B: placed under vacancy pressure; breaks down in month nine.

$94k$70k $47k$23k$0 arrears, tribunal, make-good, re-let Tenancy A · placed on verified evidence Tenancy B · placed under vacancy pressure $8,190 gap Month 0Month 12 Month 24Month 36 Same property. Same market. The gap is one decision, compounding.
Illustrative worked example — $600/week, assumptions as itemised in Section I; Tenancy B’s failure costs $8,190 (≈14 weeks of rent) across months 8–12, after which both tenancies perform identically. Not a prediction of any individual outcome. The gap never closes: it is capital removed from the owner’s return by a single selection decision.
III  ·  The Turnover Ledger

Why keeping a good tenant is a return decision.

Selection discipline has a quieter twin: retention discipline. Every avoidable turnover — even a perfectly smooth one — costs a letting fee, advertising and the vacancy between tenancies. On our example property that is roughly $2,490 per changeover, before any refresh of paint or floor coverings that a change of tenancy tends to trigger.

This is why, when we recommend a renewal rent to an owner, we price it against the comparable evidence rather than the last dollar the market might bear. Pushing a performing tenant out chasing an extra $20 a week risks a $2,490 event to win $1,040 a year — arithmetic that rarely favours the push. The same logic appears in every rent review we issue: the recommendation, the market evidence, and the cost of the alternative, side by side.

IV  ·  The Standard

How the risk is managed, not just measured.

There is no method that makes tenancy risk zero, and anyone claiming otherwise is selling certainty they do not have. What discipline does is shift the odds — materially — by replacing impressions with evidence before the keys change hands. At Pillar, that means:

  • Every claim is treated as unverified until confirmed. Identity, income, employment and rental history are checked at source — not read off the application and taken on trust.
  • Affordability is tested against a threshold, not a feeling. Verified income is measured against the rent before an application progresses, because the most common failure is not bad faith — it is arithmetic that never worked.
  • Rental history is a conversation, not a checkbox. Previous agents are spoken to. Ledgers are read. Patterns of conduct carry more weight than any single reference.
  • Every applicant is scored against the same written standard. A structured assessment per applicant means candidates are compared on evidence, side by side — and the standard does not soften because a property has been vacant a week longer than anyone would like.
  • The owner decides, on the full picture. What reaches the owner is a verified summary of every qualified applicant and a written recommendation — the evidence and our judgment, with the decision where it belongs.
IIdentity verifiedWho is actually applying
IIIncome confirmedAt source, not on paper
IIIAffordability testedVerified income against the rent
IVConduct evidencedAgents spoken to, ledgers read
VRecommendationWritten, with the evidence beside it

Five gates, in order, before any application is recommended. What reaches the owner is the output of all five: verified income, the affordability test, the ledger review, reference notes, and a written recommendation — side by side for every qualified applicant.

The process costs more time per application than a glance-and-approve ever would, and that is the trade we want. The measure of it working is quiet: tenancies that renew, ledgers that stay clean, and owners who never meet Section I at all. That is the point of the process.

Key takeaways
  • On a standard worked example, a failed placement puts roughly 14 weeks of rent at risk — and most of that cost accrues after the tenancy fails, which is why it is chronically underestimated.
  • Vacancy pressure is the enemy of selection: it prices the next week perfectly and the next year not at all.
  • Avoidable turnover costs ~$2,490 per changeover — which is why retention discipline is part of pricing, not sentiment.
  • Discipline means evidence over impressions: claims verified at source, affordability tested against a threshold, every applicant scored to the same written standard.
  • The owner should always decide — on a verified, side-by-side picture, not a single application and a good feeling.

Figures are a worked example at $600/week with assumptions itemised in Section I; letting fee shown as one week’s rent plus GST, advertising at $330, vacancy at 2.5 weeks. Actual costs vary by property, tenancy and jurisdiction. General information, not financial advice.

From Pillar Research
Next Steps

The listing gets applicants.
Judgment picks the tenant.

Before any application reaches your inbox, every claim in it has been verified at source and every qualified applicant scored against the same written standard. If you’d like to see what that looks like on your property, we’re happy to walk you through it.