The 2.1% problem: what Ottawa landlords can charge in 2026

The number everyone quotes, and the one that matters

Every July I get a version of the same call from landlord clients: "The new guideline is out. Should I take the full increase?" For 2026, Ontario set the rent increase guideline at 2.1%, the lowest cap in four years and down from 2.5% in 2025. Most coverage stops there. But if you own rental property in Ottawa, the guideline is the least interesting number in your pro forma this year, because the market itself is quietly repricing below it.

What the 2026 guideline actually says

The mechanics first, because getting them wrong is expensive. The 2.1% cap applies to most units first occupied on or before November 15, 2018. You need to serve a proper N1 form with 90 days' written notice, and you can only increase rent once every 12 months per tenancy. Skip a year and you don't get to bank it.

Units first occupied after November 15, 2018 are exempt from the guideline entirely. On those, you can raise rent by any amount with the same 90 days' notice. And when any unit turns over, there's no cap on what you set for the next tenant. That's vacancy decontrol, and it's been the engine of Ontario landlord returns for a decade.

There's also the above-guideline increase route for major capital work, capped at an extra 3% per year with Landlord and Tenant Board approval, but for a small Ottawa investor the LTB timeline makes that a long game.

On paper, then, a post-2018 unit gives you unlimited pricing power. Here's the problem: legal freedom isn't market power.

Ottawa asking rents are falling. Quietly, but falling.

CMHC's 2026 mid-year rental update confirmed what I've been seeing in my own tenant work: Ottawa asking rents have been declining since the second quarter of 2025. Two-bedroom asking rents ended 2025 about 4% below their early-2025 peak. Ottawa has joined Toronto, Vancouver and Calgary on the list of major markets where the advertised rent on a vacant unit is going down, not up.

The softness isn't evenly spread. CMHC's survey data shows vacancies concentrated in buildings completed after 2020 and in units near post-secondary institutions. Older, stabilized buildings and family-sized units are still tight. The overall apartment vacancy rate sits at 3.0%, which is inside CMHC's estimated balanced range for Ottawa of 2 to 4%. Balanced, not soft. But balanced after a decade of tight is a real change in negotiating dynamics.

For reference, CMHC's October 2025 Rental Market Survey pegged the average Ottawa purpose-built rent at $1,926, while rented condos averaged $2,503 with a vacancy rate of just 0.6%.

The turnover trade just changed sign

For years, the standard Ottawa landlord play was simple: tolerate the guideline on sitting tenants, then capture a big jump at turnover, because market rents ran well ahead of controlled rents. That spread paid for everything.

In newer stock, that trade has flipped. If you bought a 2021-built condo and your tenant leaves, you may be re-listing into a segment where asking rents are down and incentives are creeping in. CMHC notes landlords across major markets are increasingly offering incentives to fill new units. Turnover used to be a raise. In the wrong building, it's now a haircut.

And here's the data point that should reframe your thinking: in Ottawa, the most expensive quartile of rentals turned over at nearly 22% in 2025, while the most affordable quartile turned over at 14%. Your highest-paying tenant is the one most likely to leave, into the segment with the most competing supply.

Run the retention math

Take a $2,400 two-bed. The full 2.1% increase is about $50 a month, roughly $600 over a year. One month of vacancy costs you $2,400, before you paint, advertise, and possibly offer a half-month incentive to compete with the new build down the street. The break-even is brutal: a single vacant month wipes out four years of guideline increases.

So the honest 2026 playbook looks like this. On guideline-covered units with good tenants, take the 2.1%, serve the N1 properly, and invest in keeping the tenant. On exempt post-2018 units, resist the temptation to test the ceiling just because the law allows it; price against what's actually leasing in your building class. And when you underwrite a new purchase, pencil rent growth at guideline or below, and flat for newer stock. If the deal only works at 4% annual rent growth, it doesn't work.

Where I'd focus

The quiet winner in this market is the boring one: older, family-sized product in established neighbourhoods. It's guideline-covered, but it's also the tightest segment with the lowest turnover, and retention is where the money is in 2026. It's the same conclusion the acquisition math pointed to in my cap rate breakdown and the basement suite numbers: cash flow in Ottawa lives in unglamorous stock. If you're hunting, browse what's on the market with that lens.

Own a rental and wondering whether to serve the increase or leave it alone this year? Send me the address and the current rent. I'd rather run your actual numbers than have you guess. 613-262-6545 or fil@613realtor.ca.