Quebec Rent-Setting Reform 2026: What It Changes for Plex Value, Not Today's Rent

A reform of how rent increases are calculated reads naturally as a matter between landlords and sitting tenants. It is one. But it also reaches someone absent from that conversation entirely: the buyer valuing a rental building, because what they are buying is not today's rent. For the calculation mechanics and the indices by heating type, see our piece on rent increase calculation in Quebec.

What changed on January 1, 2026

Two methodological changes took effect on January 1, 2026. The Consumer Price Index is now averaged over three years, where the calculation previously used the prior year alone. And capital expenditures move to a fixed rate of 5%, replacing a variable rate tied to economic conditions. The average recommended increase for 2026 stands at 3.1%, down from 2025.

One caveat belongs here, and it governs everything below. These points come from secondary sources, not from a publication of the Tribunal administratif du logement consulted directly. They are reported as they stand, without extrapolation, and this article converts none of them into a dollar figure. For a specific building and a specific lease, the Tribunal administratif du logement is the reference.

A plex is not bought on today's income

This is the link, and it usually stays implicit. A buyer of a rental building pays today for income they will collect over years. What they are appraising is not a recorded amount, it is an expected path. And a path has two distinct dimensions: its level, and the uncertainty around it.

The familiar mistake is to look only at the level. Two buildings with identical expected income, one markedly more predictable than the other, are not worth the same to a buyer: the second demands a margin of safety the first does not. That margin is not squeamishness, it is the price of risk carried, and it shows up in the amount the buyer can justify offering.

What three-year averaging does to uncertainty

A calculation resting on the prior year alone reproduces that year's swings in full. If the year was turbulent, so is the result. Averaging over three years spreads those movements and makes the path less dependent on a single period. The effect lands on dispersion, not on level: the expected year-to-year amplitude narrows, without the method becoming more or less favourable in itself.

Moving capital expenditures to a fixed rate runs the same way. An owner contemplating major work can now estimate its effect without depending on future economic conditions. Here too the nature of the calculation changes more than its result: knowing whether the fixed rate beats a variable one requires knowing how the variable one would have moved, which cannot be known ahead.

What the two changes share is therefore more interesting than either taken alone: they make the calculation more legible in advance, and legibility benefits whoever has to project income over several years. That is precisely the buyer's position.

Predictable does not mean guaranteed

This limit needs stating firmly, because a hurried buyer crosses it easily. There is no single automatic cap. Published indices are calculation benchmarks, not legal limits, and where the parties disagree the Tribunal administratif du logement decides, file by file.

Put plainly, the reform makes a path more estimable, it does not guarantee it. An income scenario built on an increase treated as settled rests on an assumption, not a rule. The distinction is thin on paper and substantial inside an offer, because it separates a prudent projection from a wager.

The calendar is part of the file

For a lease of twelve months or more, notice of modification is given between three and six months before the lease ends. For a lease of less than twelve months, between one and two months. The tenant has one month to respond in writing, and since December 26, 2024 the notice must offer three response options.

For a buyer those boundaries are not decorative procedure: they set when they will first be able to act on rents after taking possession. Depending on the expiry dates of the leases in place and the timing of the transaction, the first usable window can sit months away. An income plan that ignores that lag books receipts earlier than they will arrive.

What to ask for before offering

Four items, all verifiable on documents. The expiry date of each lease, unit by unit, which sets the notice calendar. The history of rent modifications over recent years and the response each received. Major work already carried out, with supporting documents, and what remains to be done. And whether any file concerning a unit in the building is currently before the Tribunal administratif du logement.

None of the four is estimated: each is requested, documented and verified before the offer. That documentation, not the reform itself, is what turns an income path into a defensible scenario. The reform simply makes the work more worthwhile than before, since a more legible calculation deserves to be leaned on more.