The Debate Every Ontario Investor Has
At some point, every Ontario investor asks the same question: should I buy a condo investment or a duplex? Condos feel safer — newer buildings, less maintenance responsibility, lower entry price in some markets. Duplexes feel complicated — two tenants, two of everything, possible legal status issues.
But when you run the numbers side by side, the comparison usually comes out clearly in one direction. Let's do that comparison properly.
Cap Rate Comparison
Cap rate is the return a property generates before financing — the cleanest way to compare income properties regardless of how you finance them.
| Property Type | Typical Price (Hamilton) | Gross Rent/yr | Operating Expenses | NOI | Cap Rate |
|---|---|---|---|---|---|
| 1-bed condo | $420,000 | $22,800 | $12,400 (incl. fees) | $10,400 | 2.5% |
| 2-bed condo | $550,000 | $28,800 | $15,200 (incl. fees) | $13,600 | 2.5% |
| Legal Duplex | $649,000 | $46,800 | $17,000 | $29,800 | 4.6% |
Condo fees in Ontario average $450–$900/month for investment-grade units. That's $5,400–$10,800/year coming directly off your NOI before you calculate cap rate. This single factor often makes condos unattractive as income investments at current prices.
Cashflow Comparison
Let's run both scenarios at 20% down, 5.25% rate, 25-year amortization using Canadian semi-annual compounding:
| Property | Price | Down (20%) | Mortgage/mo | NOI/mo | Cashflow/mo |
|---|---|---|---|---|---|
| 2-bed Condo (Hamilton) | $550,000 | $110,000 | $2,672 | $1,133 | −$1,539 |
| Legal Duplex (Hamilton) | $649,000 | $129,800 | $3,153 | $2,483 | −$670 |
Neither is cashflow positive in Hamilton at these prices — but the duplex loses significantly less per month despite costing more, because the rental income from two units is substantially higher than one condo unit.
In Windsor or Oshawa, where duplex prices are lower and rents are similar, the duplex often becomes cashflow positive.
Hidden Costs: Condo Fees vs Maintenance
The condo fee comparison deserves its own section because it's often underestimated:
- Condo fees: Fixed monthly cost you can't control. They increase almost every year. Special assessments can hit you for $5,000–$50,000 with little notice. And you're paying them whether the unit is occupied or vacant.
- Duplex maintenance: Variable, and partly controllable. A well-maintained duplex with newer mechanicals might cost $4,000–$6,000/year in maintenance. You control the timing of major expenses through reserves.
Always request 3 years of condo status certificates and reserve fund studies before buying a condo investment. A underfunded reserve is a ticking special assessment. Many Ontario condo buildings built in the 2000s are hitting major repair cycles right now.
Appreciation Potential
Both condos and duplexes appreciate, but the drivers are different:
Condo appreciation is largely market-driven — you're a price-taker. You can't manufacture equity by improving the asset beyond basic upgrades. And condo supply in Ontario is increasing dramatically, which puts downward pressure on resale values in many markets.
Duplex appreciation is both market-driven and income-driven. As rents rise, the income approach valuation rises with them. You can also force appreciation through legal conversion, renovations that justify higher rents, or adding a third unit where zoning permits. You have tools to create value that condo owners simply don't have.
10-Year Wealth Comparison
| Metric | Hamilton Condo | Hamilton Duplex |
|---|---|---|
| Purchase Price | $550,000 | $649,000 |
| Down Payment | $110,000 | $129,800 |
| Monthly Cashflow | −$1,539 | −$670 |
| 10-yr Cashflow Out-of-Pocket | −$184,680 | −$80,400 |
| Est. Value at 3%/yr appreciation | $739,000 | $872,000 |
| Mortgage Balance Remaining | ~$368,000 | ~$434,000 |
| Net Equity Position | ~$187,000 | ~$258,000 |
The duplex creates significantly more net equity over 10 years — even accounting for higher out-of-pocket negative cashflow (which is lower) and higher purchase price. The gap widens further if you're in a market like Windsor or Oshawa where the duplex is cashflow positive.
The Verdict
In almost every Ontario market scenario in 2026, the duplex outperforms the condo as an income investment — on cap rate, on cashflow, on appreciation potential, and on 10-year wealth creation.
The condo wins in exactly one scenario: if you want a truly passive, low-maintenance investment and are willing to accept lower returns in exchange for not dealing with two tenants and physical property maintenance. That's a legitimate preference. But it's not a financial argument — it's a lifestyle argument.
If your goal is building wealth through Ontario real estate, the duplex wins. If your goal is maximum passivity with acceptable returns, the condo is defensible. Know which goal you're optimizing for before you buy.
Numbers are estimates based on 2026 market data. Not financial advice. Consult a licensed professional before investing.