The client
Buyers in Owen Sound put $54,500 (10%) down on a $545,000 purchase, with $10,600/month of combined income, buying a newly built home never before occupied and sized to CMHC's 30-year insured amortization for a new build. Every municipal inspection had passed, and the building permit was long closed out.
Purchase price
$545,000
Owen Sound, new build
Down payment
$54,500 (10%)
Insured file
Combined income
$10,600/month
Both salaried
Amortization
30 years
Eligible: newly built, never before occupied
What actually stalled funding
No live Tarion enrollment number for this specific unit
The permit and inspections were never the issue
The problem
The building permit was closed out, every municipal inspection had passed, and the home had never been occupied by anyone. But days before the scheduled funding date, the insured take-out's own conditions surfaced a separate requirement: a live enrollment number under Ontario's Tarion new home warranty program, for this specific unit — and the builder had never actually completed it.
Why the permit and inspections weren't enough
- ▸A municipal building permit and its inspections confirm the home was built to code
- ▸Tarion enrollment is a SEPARATE, provincewide new-home-warranty requirement, tracked unit by unit
- ▸An insured take-out's own funding conditions can require Tarion enrollment even once every municipal box is checked
This is a distinct gap from the well/septic or builders-lien holdback issues a construction file more commonly hits at the final draw — here, the building itself was entirely finished and passed; the missing piece was a registration, not a physical condition.
The numbers
Because this is an insured take-out, CMHC's ratio maximums bind directly — the math itself was never in question, only whether the enrollment would clear in time to fund it.
| The insured new-build purchase, 30-year amortization | Amount |
|---|---|
| Purchase price | $545,000 |
| Down payment (10%) | $54,500 |
| Base mortgage | $490,500 |
| CMHC premium — 3.30% (85.01-90% LTV plus the 30-year surcharge) | +$16,186 |
| Total insured mortgage | $506,686 |
| Qualifying at the stress-tested rate | Figure |
|---|---|
| Minimum qualifying rate on a 4.70% contract rate | 6.70% |
| Payment at the qualifying rate, 25 years | $3,456/mo |
| GDS (payment + $300 tax + $125 heat) ÷ $10,600 income | 36.6% |
| TDS (GDS numerator + $270 car loan) ÷ $10,600 income | 39.2% |
Both ratios sit comfortably inside CMHC's 39% GDS and 44% TDS maximums — consistent with the steady pace of new-build housing starts feeding insured take-outs like this one. The Tarion gap never touched the numbers; it threatened whether the take-out could fund on schedule at all.
The solution
A mortgage agent contacted Tarion directly rather than relying on the builder's own assurance that enrollment was 'in progress.'
First, requested written confirmation of the unit-specific enrollment status from Tarion itself. The subdivision's general registration didn't automatically cover every individual lot.
Second, pushed the builder to complete the specific unit's enrollment as a closing priority. A registered builder can usually complete a missing unit's enrollment quickly once it's flagged as the actual blocker.
Third, obtained the enrollment number in writing before the scheduled funding date. A verbal assurance from the builder wouldn't satisfy the insured take-out's own documentation requirement.
The outcome
The enrollment number arrived in writing days ahead of the scheduled date, and the insured take-out funded on the 30-year amortization as planned. GDS settled at 36.6% and TDS at 39.2%, both comfortably inside CMHC's maximums, and Ontario's land transfer tax on the purchase came to $7,375.
How quickly a builder can complete a missing unit's Tarion enrollment once flagged depends on the builder's own registration standing and Tarion's own processing at the time — not something to assume will always resolve in days.
What to take from this file
- 01A building permit and Tarion enrollment are two separate requirements. Passing every municipal inspection says nothing about whether the specific unit is enrolled under the provincial warranty program.
- 02Confirm Tarion enrollment directly with Tarion, not through the builder's own assurance. A subdivision's general registration doesn't automatically cover every individual lot.
- 03Check this condition early, not days before funding. A missing enrollment number found weeks out has time to fix; found days out, it risks the closing date itself.
- 04A 30-year insured amortization on a new build carries its own eligibility condition. Never-before-occupied status has to be true and documented, not just assumed from the purchase being 'new.'
- 05This wasn't a construction-quality problem. The home itself was fully built and passed; the gap was a registration, not a physical defect.
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.
- ▸CMHC — Purchase (Mortgage Loan Insurance) — default-insurance premium schedule by LTV band (25-year amortization).
- ▸CMHC — CMHC Home Start — minimum down payment tiers (5%/10%) and the $1.5M insured price cap; 30-year insured amortization: first-time buyers and new builds only.
- ▸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.
- ▸Ontario.ca — Calculating Land Transfer Tax / Land Transfer Tax Refunds for First-Time Homebuyers — Ontario's marginal land transfer tax brackets and first-time-buyer refund.
- ▸CMHC — CMHC Revises Homeowner Mortgage Loan Insurance Premiums — +0.20 percentage-point premium surcharge for a 30-year insured amortization.
- ▸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:
- ▸4.70% contract rate — rates move daily; not a quote.
- ▸the Tarion enrollment timeline — how long enrollment takes once requested depends on Tarion's own processing and the builder's own registration standing.
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.