The client
A family in Sarnia with a $240,000 first mortgage and a HELOC currently drawn to $30,000 requested the limit be raised to $70,000 to cover invoiced in-home personal-support-worker costs for a parent with a disability.
First mortgage balance
$240,000
4.60%, 19 years remaining
HELOC currently drawn
$30,000
Requested new limit: $70,000
In-home care cost
Ongoing, invoiced PSW arrangement
Combined income
$8,600/month
The problem
A HELOC limit increase on an already-approved, readvanceable product is not a formality -- it is underwritten as its own fresh credit decision, with a full income and credit review, exactly as a new application would be.
What the family had assumed, and what actually happened
- ▸Assumed raising an existing, already-approved limit would be a simple administrative request
- ▸The lender required a full income and credit review, the same as a new application
- ▸That same review surfaced one bruised-credit item -- a payment missed during a short medical crisis -- that needed its own explanation
The family had budgeted the care costs around getting the increase quickly. The lender's process did not move at that speed, and it was never going to.
The numbers
Both the current draw and the fully-drawn new limit clear comfortably; the real work in this file was the requalification event itself, not the arithmetic.
| Today's draw versus the new limit, fully drawn | Amount |
|---|---|
| First mortgage payment (unchanged) | $1,575/mo |
| HELOC interest-only, at $30,000 drawn | $194/mo |
| HELOC interest-only, at $70,000 fully drawn | $452/mo |
| Total debt service | Today ($30,000 drawn) | New limit, fully drawn |
|---|---|---|
| Mortgage + tax + heat | $2,065/mo | $2,065/mo |
| Car loan | $275/mo | $275/mo |
| HELOC interest-only | $194/mo | $452/mo |
| Total debt service | 29.5% | 32.5% |
32.5% on a fully-drawn, worst-case basis is comfortably inside range -- day-to-day usage of an ongoing care arrangement is likely to run lower than the full limit at any given time, consistent with how HELOC balances across Canada typically sit well under their approved limits.
The solution
A mortgage agent licensed under Ontario's Mortgage Brokerages, Lenders and Administrators Act treated the limit increase as its own credit decision from the start, rather than assuming the existing approval carried forward automatically.
First, documented the in-home care arrangement as a stable, indefinite-duration cost -- an invoiced, ongoing personal-support-worker contract, not a one-time draw with a foreseeable end.
Second, explained the missed payment with dated records tying it to a specific, short medical crisis, rather than letting a single bruised-credit item stand unexplained.
Third, requalified the full increase on the household's actual income and credit, showing the fully-drawn, worst-case figure clears comfortably rather than assuming it based on the existing approval.
The outcome
The limit increase was approved to $70,000, at 32.5% total debt service on a fully-drawn, worst-case basis, with the medical-crisis credit item documented and set aside rather than left to stand alone.
Because this is an uninsured HELOC product, CMHC's ratio maximums do not apply directly; the figures shown are informational.
What to take from this file
- 01A HELOC limit increase is underwritten as its own fresh application. An already-approved product does not carry an automatic right to a higher limit.
- 02An ongoing, invoiced care arrangement documents differently than a one-time draw. Show the lender it is stable and indefinite, not a single expense with a foreseeable end.
- 03One bruised-credit item explained with dated records rarely sinks a file on its own. Tie it to a specific, time-limited event rather than leaving it to speak for itself.
- 04Show the worst case, fully drawn. A file that clears even assuming the full limit is used is a stronger file than one that only works if usage stays light.
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.
Illustrative in this file — lender-specific, not rules:
- ▸7.75% illustrative HELOC rate — rates move daily and vary by lender; not a quote.
- ▸the fully-drawn, worst-case assumption on the new limit — shown to demonstrate the file clears even in the worst case; day-to-day usage is likely to run lower.
- ▸the TDS figures — this file is uninsured, so there is no CMHC ratio ceiling -- the numbers are 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.