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Ontario's Rent Control Exemption Now Covers 400,000+ Units: Two Portfolios, Two Underwriting Models
A 120-unit building in Kitchener, first occupied in December 2018, just completed its annual rent review. The landlord raised rents by 11.5% on turnover units and 4.9% on renewals with stable tenants. Same owner, same building, different economics than the 87-unit property three blocks away that was built in 2016. That one's capped at 2.1% for 2026.
Ontario's rent control exemption, which applies to any unit first occupied for residential purposes after November 15, 2018, now covers more than 400,000 rental units across the province, and that number grows every month. Through May 2026, purpose-built rentals made up 49.9% of all housing deliveries nationally, meaning nearly half the market can raise rents without a guideline cap. For anyone underwriting acquisition today, this is not a footnote. It's the difference between two entirely different asset classes wearing the same name.
How the Split Works
The 2026 rent increase guideline is 2.1%, the lowest in four years. For buildings first occupied before November 16, 2018, that's the ceiling for in-place tenants unless the landlord goes through an above-guideline increase application, which is slow, uncertain, and rare. For buildings first occupied after that date, the guideline does not apply at all. The landlord can raise rents to market on turnover, and can negotiate renewal increases without regulatory constraint, though tenant retention math usually limits what's actually implemented.
This creates two distinct portfolios with the same street addresses and different NOI trajectories.
Portfolio A: Legacy Assets
Take a 200-unit building in Hamilton, delivered in 2015. Current average rent is $1,680. Vacancy is running at 3.2%. Under the 2026 guideline, in-place rent growth is 2.1%, or about $35 per unit per month. On 193 occupied units (accounting for 3.2% vacancy), that's $6,755 per month, or $81,060 annually. Assume 12% turnover annually. On the 24 units that turn over, the landlord can raise rents to market, call it $2,100 for comparable units in the building. That's a $420 gain per unit per month, or $10,080 annually per turned unit, totaling $241,920 for the year. Combined rent growth from in-place and turnover: $322,980. On a base NOI of $3.2 million (assuming 35% operating expense ratio), that's about 10.1% NOI growth, driven almost entirely by turnover.
Portfolio B: Post-2018 Supply
Same market, same unit count, but this building was first occupied in January 2019. Average rent is also $1,680, vacancy is 3.2%, turnover is 12%. On the 24 turnover units, the landlord raises rents to $2,100, same $241,920 gain. But on the 176 in-place units, there's no guideline cap. The landlord offers renewals at 4-5%, not 2.1%. Call it 4.5% to keep tenants happy and avoid turnover cost. That's $75.60 per unit per month, or $13,306 per month across the in-place base, totaling $159,667 annually. Combined rent growth: $401,587. On the same $3.2 million NOI base, that's 12.5% NOI growth, 250 basis points higher than Portfolio A, with the same tenant behavior and the same market rents.
The divergence compounds. Over a five-year hold, Portfolio B's NOI grows to roughly $5.1 million, versus $4.6 million for Portfolio A, assuming both maintain the same turnover and renewal patterns. At a 4.5% cap rate, that's a $500,000 difference in terminal value on the same number of units in the same city.
Where This Breaks
The underwriting difference collapses if turnover rates spike above 25-30% annually, because at that point both portfolios are cycling units to market fast enough that the in-place rent growth difference stops mattering. It also collapses if market rents flatten or fall, because the post-2018 flexibility becomes irrelevant when there's no upside to capture.
The bet isn't on today's 2.1% guideline. It's on the next decade, during which guideline-capped buildings will lag market rent growth by 150-300 basis points annually in any normal inflation environment. That lag is baked into every pro forma for legacy assets. For post-2018 supply, it isn't.
A 120-unit building in Kitchener, first occupied in December 2018, just completed its annual rent review. The landlord raised rents by 11.5% on turnover units and 4.9% on renewals with stable tenants. Same owner, same building, different economics than the 87-unit property three blocks away that was built in 2016. That one's capped at 2.1% for 2026.
Ontario's rent control exemption, which applies to any unit first occupied for residential purposes after November 15, 2018, now covers more than 400,000 rental units across the province, and that number grows every month. Through May 2026, purpose-built rentals made up 49.9% of all housing deliveries nationally, meaning nearly half the market can raise rents without a guideline cap. For anyone underwriting acquisition today, this is not a footnote. It's the difference between two entirely different asset classes wearing the same name.
How the Split Works
The 2026 rent increase guideline is 2.1%, the lowest in four years. For buildings first occupied before November 16, 2018, that's the ceiling for in-place tenants unless the landlord goes through an above-guideline increase application, which is slow, uncertain, and rare. For buildings first occupied after that date, the guideline does not apply at all. The landlord can raise rents to market on turnover, and can negotiate renewal increases without regulatory constraint, though tenant retention math usually limits what's actually implemented.
This creates two distinct portfolios with the same street addresses and different NOI trajectories.
Portfolio A: Legacy Assets
Take a 200-unit building in Hamilton, delivered in 2015. Current average rent is $1,680. Vacancy is running at 3.2%. Under the 2026 guideline, in-place rent growth is 2.1%, or about $35 per unit per month. On 193 occupied units (accounting for 3.2% vacancy), that's $6,755 per month, or $81,060 annually. Assume 12% turnover annually. On the 24 units that turn over, the landlord can raise rents to market, call it $2,100 for comparable units in the building. That's a $420 gain per unit per month, or $10,080 annually per turned unit, totaling $241,920 for the year. Combined rent growth from in-place and turnover: $322,980. On a base NOI of $3.2 million (assuming 35% operating expense ratio), that's about 10.1% NOI growth, driven almost entirely by turnover.
Portfolio B: Post-2018 Supply
Same market, same unit count, but this building was first occupied in January 2019. Average rent is also $1,680, vacancy is 3.2%, turnover is 12%. On the 24 turnover units, the landlord raises rents to $2,100, same $241,920 gain. But on the 176 in-place units, there's no guideline cap. The landlord offers renewals at 4-5%, not 2.1%. Call it 4.5% to keep tenants happy and avoid turnover cost. That's $75.60 per unit per month, or $13,306 per month across the in-place base, totaling $159,667 annually. Combined rent growth: $401,587. On the same $3.2 million NOI base, that's 12.5% NOI growth, 250 basis points higher than Portfolio A, with the same tenant behavior and the same market rents.
The divergence compounds. Over a five-year hold, Portfolio B's NOI grows to roughly $5.1 million, versus $4.6 million for Portfolio A, assuming both maintain the same turnover and renewal patterns. At a 4.5% cap rate, that's a $500,000 difference in terminal value on the same number of units in the same city.
Where This Breaks
The underwriting difference collapses if turnover rates spike above 25-30% annually, because at that point both portfolios are cycling units to market fast enough that the in-place rent growth difference stops mattering. It also collapses if market rents flatten or fall, because the post-2018 flexibility becomes irrelevant when there's no upside to capture.
The bet isn't on today's 2.1% guideline. It's on the next decade, during which guideline-capped buildings will lag market rent growth by 150-300 basis points annually in any normal inflation environment. That lag is baked into every pro forma for legacy assets. For post-2018 supply, it isn't.
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