Treadstone Associates
Case File № 569 · Rental & Investment

The rent that might not survive a ruling

a Thunder Bay duplex counted conservatively

A Thunder Bay duplex purchase's rented unit carried an active, unresolved Landlord and Tenant Board application -- the tenant alleging maintenance issues and seeking a rent abatement. The lender counted only a reduced, conservative portion of that unit's rent until the application resolved.

OntarioInsured · Owner-occupied duplexFiled August 9, 20265 min read
$1,650/mo

the tenant's current rent, per the existing lease

$950/mo

what the lender actually counted, pending an active LTB rent-abatement application

35.8%

GDS on the reduced figure, still comfortably inside CMHC's 39% cap

Anonymized illustration. The borrowers, dollar figures, and rates in this file are an illustrative composite — no real client is identifiable, and any rate shown is illustrative, not a quote. The rules are real: every regulatory figure is cited to its source in the Sources section, and the math computes exactly as shown.

№ 01

The client

A buyer in Thunder Bay purchased a $415,000 owner-occupied duplex at 10% down, insured, with one unit already tenanted at $1,650/month.

Purchase price

$415,000, Thunder Bay

10% down, insured, owner-occupied duplex

Tenanted unit's current rent

$1,650/month

Per the existing lease

Active LTB application

Tenant seeking a rent abatement

Maintenance issues alleged, unresolved at underwriting

Buyer's own income

$7,900/month

№ 02

The problem

A rented unit's current lease amount is not the only fact a lender looks at when qualifying an investment property unit inside an owner-occupied duplex. This unit's tenant had an active, unresolved application before the Landlord and Tenant Board alleging maintenance issues and seeking a rent abatement -- an outcome that could reduce the rent, retroactively or going forward, well below the $1,650/month the lease itself stated.

Why the full lease amount couldn't be counted

  • The application was filed and active, with no hearing date yet scheduled -- its outcome was genuinely unknown
  • A rent abatement order, if granted, could reduce what this unit actually collects for months already past, not only going forward
  • The lender's own policy would not count a contested rent figure at full face value while a live claim against it existed

The lease said $1,650. Nobody -- not the landlord, not the tenant, not the lender -- could say with certainty that the unit would keep collecting that amount.

№ 03

The numbers

Counting only a conservative portion of the contested unit's rent still cleared the file comfortably.

Counting the rent conservativelyAmount
Tenant's current lease amount$1,650/mo
Amount the lender actually counted$950/mo
Portion left out of the file entirely$700/mo
Ratio check at the qualifying rateFigure
Payment at the qualifying rate (6.90%), 25 years$2,673/mo
GDS (payment + $355 tax + $140 heat) ÷ $8,850 income35.8%
TDS (GDS numerator + $245 car loan) ÷ $8,850 income38.6%

35.8% and 38.6% sit comfortably inside CMHC's 39% GDS and 44% TDS maximums, even counting only the conservative $950/mo figure -- a margin consistent with what rental vacancy rate data suggests a well-located secondary unit can typically support. The pending LTB application was a documentation question, not a ratio problem.

№ 04

The solution

A mortgage agent licensed under Ontario's Mortgage Brokerages, Lenders and Administrators Act treated the active LTB application as a fact to disclose and account for conservatively, not a detail to leave out of the file -- the same insured A-lender channel that, per lender-type market share data, carries most owner-occupied duplex purchases like this one.

First, disclosed the pending application to the lender directly, rather than submitting the lease at face value and letting an underwriter discover it independently.

Second, obtained the lender's written policy for counting rent on a unit with an active tenant dispute, confirming the specific reduced figure it would accept toward qualifying income.

Third, left the remaining $700/month out of the file entirely rather than arguing for the full lease amount, keeping the file honestly sized to what could actually be relied on today.

Written disclosure of the active LTB application to the lender
Lender's written policy on counting rent for a unit with a pending tenant dispute
Confirmation of the specific reduced rent figure accepted toward qualifying income
Current lease documentation showing the full contracted rent for context
Standard insured-purchase documentation for income, down payment and credit
№ 05

The outcome

The purchase funded insured at 35.8% GDS and 38.6% TDS, counting only the conservative $950/month rent figure, with the balance available to add back only once the LTB application actually resolved.

Both ratios sit comfortably inside CMHC's 39% GDS and 44% TDS maximums; the file was never close to either ceiling even on the reduced rent figure.

№ 06

What to take from this file

  • 01A lease amount and a reliable rent figure are not always the same thing. An active Landlord and Tenant Board application against a unit's rent is a real risk to disclose, not a detail to omit.
  • 02A T6 maintenance/abatement application is a different risk than an eviction notice or a rent increase not yet in effect. It can reduce a unit's rent, not just delay a landlord's plans for it.
  • 03Get the lender's specific reduced-rent policy in writing rather than guessing at what portion of a contested lease amount will be counted.
  • 04Size the file to what can be relied on today, not to the full lease amount. The rest becomes available once the dispute actually resolves, not before.

Sources

Every regulatory figure in this file traces to one of these primary sources. Client details and anything that varies by lender are illustrative, as flagged below.

Illustrative in this file — lender-specific, not rules:

  • 4.90% contract rate — rates move daily; not a quote.
  • the $950/mo counted-rent figure — each lender sets its own conservative treatment for a unit with an active tenant dispute; there is no published, universal formula for how much of the rent to count.

Authority & provenance

How this case file was built

We publish the origin, the verification method and the reviewer for every case file, so you can judge how far to trust it before you rely on it with a client.

Where it comes from

Derived from files handled by Treadstone’s fulfillment desk and from scenarios contributed by partner brokerages. Names, employers, exact amounts and dates are changed so no client or file is identifiable.

Provenance: Composite — a pattern seen repeatedly on fulfilled files, not a single transaction.

What is verified

Every regulatory figure traces to a primary source listed above and was checked against it on the date shown. The arithmetic is recomputed by machine on every rebuild.

Anything that varies by lender is labelled illustrative rather than stated as a rule.

Who reviewed it

Reviewed for Canadian regulatory accuracy before publication, and re-checked whenever a cited rule changes.

Reviewed by: Nicholas Parson, Treadstone Associates — reviews every case file before publication.

First published 9 August 2026Rules last verified 9 August 2026Next scheduled review 9 February 2027

This case file is professional reference material for licensed mortgage professionals. It is not advice to a borrower, and it is not a lender commitment. Insurer rules, qualifying rates and provincial taxes change — confirm the current position with the insurer, regulator or lender before you rely on any figure here in a live file.

Treadstone fulfillment

Files like this are daily work for our desk.

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