The client
An investor buying a $385,000 rental condo in Quebec City had $57,750 of their own cash -- 15% down, $19,250 short of this lender's 20% minimum on a non-owner-occupied purchase. The seller agreed to carry the shortfall as a vendor take-back second, registered behind the first mortgage.
Purchase price
$385,000, Quebec City
Buyer's cash down payment
$57,750 (15%)
Vendor take-back second
$19,250
Interest-only at 6.00%, to cover the down-payment shortfall
Other debt
$270/mo car loan
The problem
A lender's policy on secondary financing behind its own charge is exactly that -- its own policy, not a universal rule. Some lenders permit a registered second, provided it's disclosed and postponed; others, especially on non-owner-occupied purchases, refuse to allow any secondary financing behind their charge at all, at any amount.
Where the file actually stalled
- ▸The best-priced first-mortgage lender's underwriting policy bars ANY secondary financing registered behind its charge on a rental purchase -- not a limit on the amount, an outright prohibition
- ▸The seller's vendor take-back second was already agreed, documented, and expected to register at closing
- ▸Nobody had checked the FIRST lender's secondary-financing policy before shopping its rate
The take-back itself was never the problem. The first mortgage lender's blanket policy against registering anything behind its own charge was.
The numbers
Once the policy conflict was identified, the fix was moving the first mortgage, not restructuring the seller's security or asking the buyer to find more cash.
| Sizing both charges | Amount |
|---|---|
| Required down payment (20% of purchase price) | $77,000 |
| Buyer's own cash | $57,750 |
| Vendor take-back second, covering the gap | $19,250 |
| First mortgage (80% of purchase price) | $308,000 |
| Total debt service at the second lender | Figure |
|---|---|
| Minimum qualifying rate on a 5.25% contract rate | 7.25% |
| First-mortgage payment at the qualifying rate, 25 years | $2,205/mo |
| Vendor take-back interest-only payment (6.00% on $19,250) | $96/mo |
| Total debt service | 40.2% |
40.2% was never a close call on the ratios, and it sits well inside what rental-market conditions across Canada would suggest is workable. The entire obstacle was a lender policy that had nothing to do with the file's own numbers -- once the first mortgage moved to a lender comfortable with a registered take-back behind it, the math simply worked.
The solution
A courtier hypothécaire licensed under Quebec's Act respecting the distribution of financial products and services treated the secondary-financing policy, not the take-back itself, as the actual obstacle.
First, confirmed in writing that the first lender's policy was an outright prohibition, not a size or LTV limit. No amount of the take-back would have satisfied that lender's underwriting rules.
Second, shopped the first mortgage specifically for a lender whose policy permits a registered second. Found one at a somewhat higher 5.25% rather than the originally-quoted rate -- a real but modest cost against restructuring the seller's own security.
Third, kept the vendor take-back's terms and registration exactly as originally negotiated. The seller's security never had to change; only the lender behind it did.
The outcome
The purchase closed with both charges registered as intended -- the seller's take-back second protected by its own registration behind the new first mortgage -- and total debt service settled at 40.2%. As a Quebec transfer, the welcome tax on this purchase comes to $3,886.
Because this is a conventional, uninsured 80% LTV rental purchase, CMHC's ratio maximums don't apply directly; the 40.2% figure is informational.
What to take from this file
- 01Check the first lender's secondary-financing policy BEFORE shopping its rate. A blanket prohibition on registered secondary financing is a real, common policy on rental purchases -- and it can undo an otherwise-agreed structure late in the file.
- 02A policy prohibition and an LTV limit are not the same obstacle. One can sometimes be negotiated with documentation; the other cannot be negotiated at all -- the file has to move lenders.
- 03Moving the first mortgage protects the seller's negotiated security. Restructuring or unwinding a vendor take-back to fit a lender's policy risks losing the seller's registered protection entirely; moving the first mortgage instead leaves it untouched.
- 04A modestly higher first-mortgage rate can be the cheaper fix. A quarter-point rate difference is a real cost, but it is smaller than the alternative of asking a seller to give up registered security or a buyer to find cash they don't have.
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.
- ▸OSFI — Minimum qualifying rate for uninsured mortgages — the minimum qualifying rate — greater of contract rate + 2% or 5.25%.
- ▸Provincial/territorial mortgage-broker legislation fetched directly (bclaws.gov.bc.ca, legisquebec.gouv.qc.ca, fcaa.gov.sk.ca, web2.gov.mb.ca, nslegislature.ca, assembly.nl.ca) plus FCNB's own site for NB and CanLII's index for PE — see notes for per-province method — provincial mortgage regulators and licence titles.
- ▸Gouvernement du Québec — Droits sur les mutations immobilières — Quebec's transfer duties ('welcome tax') — 2026 indexed brackets.
Illustrative in this file — lender-specific, not rules:
- ▸6.00% / 5.25% rates — rates move daily; neither is a quote.
- ▸the first lender's blanket ban on secondary financing behind its first mortgage on a non-owner-occupied purchase — each lender sets its own policy on registered secondary financing behind its charge; this is not a universal rule.
- ▸the TDS figure — this file is a conventional, uninsured 80% LTV rental purchase -- there is no CMHC ratio ceiling; the number is informational.
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.
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.