Investing in a Plex in Gatineau: Is It Still Worth It?
It depends on the price you pay and the leases in place. In Q3 2026, the median price of a 2 to 5 unit plex was $617,500 in the Gatineau metropolitan area, up 2% over one year (QPAREB, Centris data). At that price, the building has to pay for itself with today's rents.
Which numbers should you look at first?
The gross rent multiplier (GRM, or MRB in Quebec) divides the price by the annual gross income. It's a quick way to compare two buildings in the same sector, nothing more.
The cap rate (TGA in Quebec) divides net income by the price. Net income is what's left of the rents after municipal and school taxes, insurance, maintenance, any utilities the owner pays, management fees, a replacement reserve and an allowance for vacant units. The mortgage is not part of this calculation.
Cash flow comes after the mortgage. A building can show a decent cap rate and still leave little money each month, depending on your down payment and your rate.
How much down payment do you need?
If you live in one of the units, a 2-unit plex can be bought with an insured down payment of 5% on the first $500,000 and 10% on the rest. For an owner-occupied 3 or 4-unit building, the insured minimum is 10%. Both rules come from CMHC mortgage loan insurance for owner-occupants. For a building you don't live in, it doesn't apply, and lenders usually ask for at least 20%.
Your down payment weighs heavily on your return. Talk to your lender before you visit.
Why does vacancy matter more than before?
In October 2025, CMHC measured a 3.8% vacancy rate in the Gatineau area, compared with 1.9% a year earlier. A unit that stays empty for two months takes away two months of income. I cover this in detail in the article on Gatineau's rental market.
Which mistakes cost the most?
Buying on advertised rents instead of signed leases. Read every lease: the rent, the end date, and what's included (heating, electricity, parking).
Skipping a proper inspection. A plex often has several electrical entries and several water heaters, under a single roof. Pick an inspector who does plexes often.
Forgetting compliance. Check with the City that zoning allows the number of units, especially when one of them is in the basement.
Where should you look in Gatineau?
The regional median hides big gaps between Hull, Aylmer, the Gatineau sector and Buckingham. For a specific building, I compare with recent sales of similar buildings in the same sector.
What I see in my plex files
The question my investors ask me most often: "Does it pay for itself?" To answer it, I start from the leases, never from an average.
Right now, plexes with rents below market sell faster. Buyers see room for the years ahead, within the TAL rules. On the other hand, a poorly rented or poorly maintained plex stays on the market longer, and its price gets negotiated.
I'm also seeing more owner-occupants than before. These are people who buy a duplex or triplex to live in, and who count on the rents to cover part of the mortgage.
What I do before an offer
I calculate the GRM, the cap rate and the cash flow from the leases in place, before you make an offer. You then have the numbers and the options, and you decide.
Sources: QPAREB, residential barometer, Q3 2026 (Centris data). CMHC, Rental Market Report, October 2025, and homeowner mortgage loan insurance.
Read also: Gatineau's Rental Market · Plexes in Gatineau, Q3 2026