The capitalization rate is the single most quoted — and most abused — number in Montreal's revenue property market. A seller's broker will present a 5.2% cap rate built on last year's heating bill and a vacancy line of zero. A disciplined buyer recalculates and finds 4.1%. The spread between those two numbers is where deals are won, lost, and litigated.
What a Cap Rate Actually Is
The cap rate is the building's normalized net operating income (NOI) divided by its price. Nothing more. The discipline is entirely in the word normalized:
Income side. Use the actual rent roll, not the "market rent potential". In Quebec, leases survive the sale and rent increases are framed by the Tribunal administratif du logement (TAL) guidelines. A building with tenants paying 30% under market is not earning market rent — it is earning what the leases say, with a slow path to upside.
Expense side. Normalize for: realistic vacancy (use ~1.5% for Montreal in 2026, not 0%), management (4–5% of revenue even if you self-manage — your time is not free), maintenance reserves ($800–$1,200 per unit per year for older stock), insurance at renewal quotes (premiums for multi-unit buildings have risen sharply), and actual utility splits.
Montreal Cap Rates by Segment in 2026
- Plex (2–4 units), central neighbourhoods: 3–4.5%. Priced partly as housing, partly as investment — owner-occupant demand compresses yields.
- 5–11 units, stabilized: 4–5%. The core of the private-investor market.
- 12–50 units, stabilized: 4.5–5.5%. Institutional-adjacent; CMHC financing dominates.
- Value-add (under-market rents, deferred maintenance): going-in caps can exceed 5.5%, but the real metric is the stabilized yield after capex.
These bands move with interest rates and CMHC policy. The figures above reflect mid-2026 conditions in Greater Montreal.
The Three Distortions to Watch
1. The vacancy fiction. Montreal's vacancy is low, but zero-vacancy underwriting means any single non-payment or turnover wipes the margin. One bad TAL file can cost a year of a unit's income.
2. The heating asymmetry. Who pays for heat changes NOI by thousands per unit per year. Buildings where landlords pay heat in 2026's energy market deserve a meaningfully different multiple than tenant-heated stock.
3. The taxes step-up. Municipal assessment catches up to your purchase price. Underwrite the post-sale tax bill, not the seller's current one.
Cap Rate Versus Cash-on-Cash
The cap rate prices the building; cash-on-cash prices your equity. With CMHC MLI Select financing reaching up to 95% loan-to-value and 50-year amortizations for qualifying projects, a 4.5% cap rate building can produce a dramatically higher return on actual cash invested. This is why well-financed buyers in 2026 can outbid all-cash buyers and still hit their targets — the financing is the strategy. We cover this in detail in our CMHC MLI Select financing guide.
Running Real Numbers Before You Offer
A disciplined underwrite on a Montreal 6-plex takes an afternoon if you have the documents: rent roll, leases, two years of expenses, tax and insurance bills, and the certificat de localisation. If a seller can't produce them, that is itself information.
If you are evaluating a building — or trying to understand what yours would fetch — my multifamily acquisition practice runs this exact analysis, and the seller-side process prepares the same numbers from the other direction.
Jeremy Soares is an OACIQ-licensed residential and commercial real estate broker (H2731) in Montreal.