In short
If you live in one of the units, a 2- to 4-unit plex is financed like a house, with CMHC mortgage insurance: 5% on the first $500,000 and 10% on the rest for a duplex, 10% for a triplex or fourplex, for a price under $1.5M. If you do not live there, CMHC insurance for 2- to 4-unit rentals requires at least 20% down. From 5 units, it is multi-unit financing. Rents count toward your qualification: up to 100% of gross rents for an owner-occupied duplex, up to 50% beyond that.
The down payment by number of units
| Property | Minimum down payment | Price or value cap | Amortization |
|---|---|---|---|
| 1 or 2 units, you live in one | 5% of the first $500,000, 10% of the rest | Under $1,500,000 | 25 years; 30 years for a first-time buyer or a new build |
| 3 or 4 units, you live in one | 10% | Under $1,500,000 | 25 years; 30 years for a first-time buyer or a new build |
| 2 to 4 units you do not live in | 20% | Under $1,000,000 | 25 years maximum |
| 5 units or more | Multi-unit financing (CMHC MLI Select) | Depends on the program | Up to 40 years and more depending on points earned |
Sources: CMHC “Purchase”, “Income Property” and “MLI Select” products; Finance Canada for 30-year amortization (first-time buyers and new builds, since December 15, 2024). For a plex, confirm with the lender that 30-year amortization applies to your file.
What that means at the median plex price
| Market | Median plex price | If it is an owner-occupied duplex | If it is an owner-occupied triplex or fourplex (10%) | If you do not live there (20%) |
|---|---|---|---|---|
| Montreal (CMA) · 2026-09 | $861,000 | $61,100 | $86,100 | $172,200 |
| Quebec City (CMA) · 2026-09 | $593,000 | $34,300 | $59,300 | $118,600 |
| Laval · 2026-08 | $965,000 | $71,500 | $96,500 | $193,000 |
| Trois-Rivières (CMA) · 2026-T2 | $414,000 | $20,700 | $41,400 | $82,800 |
| Granby · 2026-06 | $549,000 | $29,900 | $54,900 | $109,800 |
Median price of the “plex” category published by the QPAREB (Centris statistics), for the month shown. The category groups several plex sizes: the math applies each case’s rule to the same price, as an illustration. Payotte calculation.
Rents in your qualification
The plex’s rents help you qualify, but not in full. CMHC publishes two methods: add a percentage of gross rents to your income, or use net rental income (gross rents minus operating expenses).
| Property being financed | Accepted method |
|---|---|
| Duplex you live in | Up to 100% of gross rents |
| Triplex or fourplex you live in | Up to 50% of gross rents, or net income |
| 2 to 4 units you do not live in | Up to 50% of gross rents, or net income |
Source: CMHC, “Rental Income”.
The rules that apply as for a house
The lender checks your ratios: CMHC caps housing costs at 39% of gross income (GDS) and total debt at 44% (TDS), calculated at the stress test rate. The stress test guide explains that rate, and the affordability guide does the math.
Rent you collect must be reported: federally, the Canada Revenue Agency uses form T776, “Statement of Real Estate Rentals”. If you are a first-time buyer, see also the HBP and FHSA for the down payment.
Frequently asked questions
What down payment do I need for a triplex?
If you live in one of the units, at least 10% with CMHC mortgage insurance, for a price under $1.5M. If you do not live there, at least 20%.
Can I buy a plex with 5% down?
Yes for a duplex you live in: 5% on the first $500,000 and 10% on the rest. For an owner-occupied triplex or fourplex, the minimum is 10%.
Do rents count toward qualifying?
Yes, in part. According to CMHC, up to 100% of gross rents for a duplex you live in, and up to 50% of gross rents (or net income) for a triplex, a fourplex or a building you do not live in.
Do I have to live in the plex for mortgage insurance?
No, CMHC also insures 2- to 4-unit rental properties not occupied by the owner, but with at least 20% down, a value under $1M and a 25-year maximum amortization.
Sources
- SCHL — Achat (assurance prêt hypothécaire, 1 à 4 logements occupés par le propriétaire) read 2026-10-08
- SCHL — Immeubles locatifs (2 à 4 logements non occupés par le propriétaire) read 2026-10-08
- SCHL — Revenu de location read 2026-10-08
- CMHC — MLI Select (5 units or more) read 2026-10-08
- CMHC — Calculating GDS / TDS read 2026-10-08
- Finances Canada — Réformes hypothécaires (amortissement de 30 ans, plafond de 1,5 M$) read 2026-10-08
- ARC — T776 État des loyers de biens immeubles read 2026-10-08
- APCIQ — Statistiques mensuelles Centris, septembre 2026 (prix médian des plex) read 2026-10-08
Talk to a verified mortgage broker
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See verified mortgage brokersRelated guides
- Self-employed mortgage: qualifying without a T4
- Down payment: the real cost of 5% instead of 20%
- Mortgage affordability: how much can you borrow?
- Mortgage stress test: what rate are you qualified at?
Updated
General information, not financial advice. For your situation, consult a mortgage broker or your institution.