National Vacancy Fell 40 Basis Points in Q2: Why Waiting for Lower Prices May Now Cost You

The underwriting spreadsheet for a 16-unit property in Ajax, Ontario, is still pricing in 6% vacancy for year two. The deal closed last month. The national rate is already 4.7% and falling.

For most of the last two years, vacancy went one direction: up. From Q4 2023 through Q1 2026, nine consecutive quarters, the national apartment vacancy rate climbed as the 2021-2022 construction boom delivered wave after wave of new supply. Landlords offered concessions. New investors waited. The conventional wisdom became: hold off, more inventory is coming, prices will soften.

In Q2 2026, that streak broke. Vacancy fell 40 basis points to 4.7%, according to Yardi's July report. The supply wave isn't gone, but it's cresting.

The Supply Lag Is Now Working in Reverse

The multifamily market operates on a two-year lag between financing and delivery. The projects landing in Q2 2026 were financed in 2024, when capital was still flowing and rates hadn't yet reset expectations. The projects that would have delivered in 2027 were not financed in 2024 and 2025, when construction lending tightened and developers shelved plans. That gap is now showing up in the delivery schedule.

The vacancy drop isn't speculative. It's arithmetic. Fewer new units are arriving. Demand hasn't collapsed, immigration adjustments have slowed the composition of rental demand, but structural shortages in Toronto, Vancouver, and secondary markets haven't disappeared. The result: the tenant's market is ending faster than most underwriting models assume.

Underwriting Is Still Defensive

Most investors are still pricing deals as if vacancy will remain elevated or rise further. That made sense six months ago. It doesn't now. A 6% vacancy assumption in a stabilizing 4.7% market leaves 130 basis points of income on the table in year one. Over a five-year hold, that compounds.

The shift isn't just occupancy. It's concessions. For the last two years, landlords have used "one month free" incentives to fill units. Those costs don't show up in gross rent figures, but they wreck net operating income. As vacancy tightens, the first gain isn't higher rents, it's the elimination of giveaways. A building that stops offering concessions in Q3 2026 captures an immediate margin improvement without touching the lease rate.

Rent control limits the upside on existing leases in Ontario (2.5% guideline for 2026), but it doesn't cap the value of turnover. A vacant unit in a tightening market can reset to market faster than a occupied one can adjust. The investors pricing in prolonged softness are missing the arbitrage.

The Window Closes Faster Than It Opened

Markets don't transition neatly. The supply wave took nine quarters to build. The reversal will be faster. Sellers adjust before buyers do. The properties still priced for a tenant's market won't stay that way once cap rate compression resumes and lenders start underwriting to stabilized vacancy instead of stress scenarios.

Refinancing terms are already shifting. Lenders who were requiring 7% vacancy stress tests in Q1 are now accepting 5.5% for seasoned operators with demonstrable occupancy. That gap matters. It changes what pencils and who can execute.

The risk isn't overpaying in a falling market. The market isn't falling anymore. The risk is waiting for a discount that already evaporated while underwriting assumptions catch up to the data. The Yardi number is from Q2. Most portfolio expansion decisions being made right now are still using Q4 2025 assumptions.

A 47-year-old investor in Mississauga who bought a 12-plex in Q1 2025 at a 5.8% cap, with 6% projected vacancy, is now sitting on a building running at 3.9% vacancy with zero concessions. The deal "overpaid" by every metric available at the time. It's now ahead of pro forma by 18 months.

The mistake isn't moving early. The mistake is refusing to move until consensus catches up, which it does only after the opportunity has already repriced.