The client
A couple already owned a principal residence in the North Okanagan and wanted a second property in Salmon Arm to operate as a short-term, nightly-rate rental, with a third-party booking-platform analysis projecting solid seasonal income.
Household income
$13,500/month, both salaried
Existing home
$1,850/mo mortgage, $220 tax, $100 heat, principal residence elsewhere in the North Okanagan
New purchase
$620,000 Salmon Arm property, not intended as a principal residence
Down payment
$124,000 — 20%, conventional
Car loan
$300/month
The problem
The purchase was structured around a nightly-rate income projection, and the buyers assumed — reasonably, since nothing on the listing said otherwise — that operating it as a short-term rental was simply a business decision, not a legal question. It isn’t, in Salmon Arm.
What the law actually says
- ▸British Columbia’s Short-Term Rental Accommodations Act limits short-term rentals (bookings under 90 days) to a host’s principal residence, plus one secondary suite or accessory dwelling unit on the same property
- ▸The rule applies by default in municipalities with a population of 10,000 and over, and in some smaller neighbouring communities — Salmon Arm, at roughly 19,400 people, is well inside that threshold
- ▸The buyers already had a principal residence elsewhere; this property could not legally be their principal residence too, which means it could not legally operate as a short-term rental at all, regardless of what the booking-platform income projection showed
No lender error and no underwriting mistake had happened yet — the file simply could not be built the way it was first pitched, because the income itself was never lawfully available to be earned.
The numbers
Once short-term income was off the table, the file had to be requalified on what the property could legally earn instead.
| Structuring the purchase | Amount |
|---|---|
| Purchase price | $620,000 |
| Down payment (20%) | −$124,000 |
| Mortgage (conventional, 80% LTV) | $496,000 |
| Total debt service | Short-term projection barred outright | Long-term lease counted |
|---|---|---|
| Existing home (mortgage + tax + heat) | $2,170 | $2,170 |
| New property, qualifying payment | $3,471 | $3,471 |
| New property, tax + heat | $400 | $400 |
| Car loan | $300 | $300 |
| Income used | $13,500 (salaried only) | $14,700 (incl. $1,200 rental credit) |
| Total debt service | 47.0% | 43.1% |
The qualifying payment is calculated at the minimum qualifying rate, not the 4.99% contract rate the buyers will actually pay. A signed 12-month lease at $2,400/month market rent, credited at 50% under this lender’s own published policy — a treatment each lender sets for itself — added $1,200 to qualifying income and cleared the ceiling with almost a full point of room, well inside what national rental vacancy data would suggest for a tenanted, long-term-leased unit in a smaller BC city.
The solution
A submortgage broker registered under BC’s Mortgage Services Act treated the legality of the income, not just its size, as the file’s first question.
First, confirmed Salmon Arm’s status under the Short-Term Rental Accommodations Act against the province’s own published list, rather than assuming a smaller city was exempt.
Second, told the buyers the short-term-rental business plan was off the table for this property before submitting anything to a lender on that basis.
Third, rebuilt the file around a signed long-term lease, with a market-rent survey supporting the $2,400 figure, and resubmitted on that footing.
The outcome
The purchase funded at 4.99%, conventional, 80% LTV, on a signed long-term lease rather than a short-term-rental projection, with total debt service at 43.1%.
Because this is a conventional 80% LTV purchase, CMHC’s ratio maximums do not apply directly; the 43.1% figure reflects this lender’s own comfort level, applied consistently before and after the correction.
What to take from this file
- 01Check a property’s municipality against BC’s Short-Term Rental Accommodations Act before a short-term-rental income projection goes anywhere near a qualifying calculation. The default rule captures every municipality of 10,000 or more people, plus some smaller neighbours.
- 02The principal-residence requirement is about the host, not the platform. A borrower who already has a principal residence elsewhere cannot legally short-term-rent a second property in a captured municipality, however strong the booking history looks.
- 03A barred income source isn’t a lender problem to shop around — it’s a legal one. No amount of switching lenders fixes income that cannot lawfully be earned.
- 04A signed long-term lease is often the faster path once short-term income is off the table. This file cleared comfortably once it was underwritten on what the property could actually, legally, earn.
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%.
- ▸CMHC — CMHC Reviews Underwriting Criteria — GDS 39% / TDS 44% maximums and the 600 credit-score floor for insured files.
- ▸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.
Illustrative in this file — lender-specific, not rules:
- ▸4.99% contract rate — rates move daily; not a quote.
- ▸50% credit against the $2,400 lease rent — each lender sets its own long-term-rental income treatment.
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.