The self-storage industry’s most reliable revenue lever - the existing customer rate increase, or ECRI - is producing a counterintuitive result in oversupplied markets. Move-in rents sit roughly 35% below in-place rates. Every customer who churns after an aggressive rate increase resets that unit to the worst available pricing.
The strategy that built REIT revenue growth from 2021 through 2023 now appears to be eroding net operating income for operators in markets where supply has outpaced demand.
That’s a strong claim. The data from Q1 2026 - PSA’s essentially flat same-store revenue, three consecutive months of accelerating Yardi rate declines, and the first trade press analysis modeling ECRI as self-defeating - makes it a hard one to dismiss.
But this calculus doesn’t apply uniformly. In supply-constrained markets like Boston and New York, the math still works. The distinction matters, and we’ll get to it.
How the ECRI Playbook Built Revenue Growth
The mechanism behind ECRIs is straightforward, and for years it worked reliably. An operator raises rates on existing tenants - typically 8% to 12% annually, sometimes more - knowing that most long-term tenants won’t move.
The friction of relocating belongings, finding a comparable unit, and the general inertia of storage customers means a large percentage of tenants absorb the increase. Revenue grows without needing new move-ins.
From 2021 through 2023, the economics were favorable. Supply was constrained by pandemic-era construction delays. Move-in rents ran close to in-place rates, so the gap a churning tenant created was manageable - historically around 10% to 15%.
If a tenant left after an ECRI, the unit re-leased at a modest discount. The revenue collected from the months of higher rent usually exceeded what the operator lost on the turnover.
What made the playbook powerful was that it worked at portfolio scale. REITs could model the math across thousands of units, predict churn rates within narrow bands, and calibrate rate increases to maximize the spread between ECRI revenue and churn-replacement cost.
It was, by most accounts, the single most effective revenue growth mechanism in the sector.
The variable that changed isn’t the strategy itself. It’s the environment the strategy operates in.
What Q1 2026 Data Reveals About ECRI Economics
Public Storage’s Q1 2026 results, released 27 April, offer the first concrete read on how this dynamic is playing out. Same-store revenue came in at +0.1% year over year - essentially flat.
Core FFO held up at $4.12 per share, roughly in line with consensus, but that was driven by ancillary revenue growth of 6.9% and cost discipline. The pricing engine didn’t contribute much.
That same-store figure lands in a rate environment that’s been deteriorating all quarter. Yardi Matrix data shows national advertised rates declining 2.0% year over year in March, accelerating from -1.2% in February and -0.4% in January.
All 30 tracked metros posted negative annual rate growth. Spring hasn’t delivered the demand floor operators were counting on.
But here’s where the ECRI math gets difficult. The current rent roll-down - the difference between what a new customer pays at advertised street rates and what the departing tenant was paying - sits at roughly 35%, according to Nareit’s sector analysis.
The historical norm is 10% to 15% - the gap has more than doubled.
Modern Storage Media published analysis in April modeling what this means in practice. Their scenario: a tenant paying $200 per month receives an aggressive ECRI, churns after 12 months, and the unit re-leases at the prevailing street rate.
Total collected from that tenant over the year: $1,596. The in-store rate for that unit over the same period: $2,400. That’s a 33.5% discount realized on what was supposed to be a revenue-maximizing strategy.
The MSM analysis is a modeled scenario, not a controlled study. No REIT publicly attributes churn rates specifically to ECRI activity. The causal chain - aggressive ECRI drives elevated churn, churn drives roll-down losses that exceed ECRI gains - is suggestive, not proven.
But the directional economics are difficult to argue with when the roll-down is running at 35%.
The average length of stay has climbed to 18.5 months, up 2.4% year over year per RentCafe data. That’s a stability signal on one level.
On another level though, it means operators are increasingly dependent on ECRIs for revenue growth from their existing tenant base - at precisely the moment when each ECRI-driven departure carries the highest replacement cost in recent memory.
Where This Does and Doesn’t Apply: Constrained Markets vs. Oversupplied Markets
This analysis has a hard boundary, and it’s worth real consideration rather than treating it as a footnote.
In supply-constrained markets - Boston, New York City, and parts of the Northeast corridor - the ECRI calculus is fundamentally different. These markets are seeing rate growth tolerance of 11% to 15%. NYC street rates are running around $2.50 per square foot.
Move-in demand is deep enough that a churned unit doesn’t sit vacant for long, and the roll-down discount is narrower because street rates haven’t collapsed the way they have in Sun Belt metros.
When supply is tight and demand is strong, an ECRI-driven departure is a manageable cost. The replacement tenant arrives quickly and at a rate that’s still in reasonable range of what the departing tenant was paying. The playbook works because the environment supports it.
In oversupplied markets, the picture inverts. Sarasota-Cape Coral has a construction pipeline equal to 8.0% of existing stock - the highest in the country. Miami and Nashville are also running heavy pipelines.
When an ECRI pushes a tenant out in these markets, the unit enters a move-in pool where demand is being split across a growing supply base. The roll-down compounds with occupancy risk: not only does the replacement tenant pay less, but the replacement might take longer to arrive.
The behavioral signal from the REITs themselves is perhaps the most telling data point. As of January 2026, REIT advertised rents were running roughly 7.5% below non-REIT operators.
The operators with the most sophisticated revenue management systems in the industry - the ones with the deepest data on churn-to-roll-down economics - have already priced in the defensive calculation. They’re accepting lower move-in rates to protect occupancy. That tells us something about how they’re reading the same math we’re looking at.
The Regulatory Dimension of Aggressive Rate Increases
The financial calculus isn’t the only pressure on aggressive ECRI practice. A regulatory dimension is emerging that adds a second kind of risk - one that’s asymmetric and worth monitoring.
California SB 709, effective 1 January 2026, requires clearer ECRI disclosures in rental agreements. It doesn’t ban rate increases. It mandates transparency about how and when they’ll happen.
On its own, it’s a disclosure requirement. As a signal of legislative direction, it suggests that the conversation about ECRI practices has moved from industry forums into state legislatures. For operators who want the compliance details, our regulatory watch coverage has the full SB 709 breakdown.
In New York, a lawsuit against Extra Space Storage has framed aggressive ECRIs - alongside allegations of bait-and-switch pricing and junk fees - as a consumer harm.
ISS, the industry’s own trade publication, responded with an editorial asking directly: “Will more storage companies come under fire?” When trade press moves from defending a practice to publicly questioning its sustainability, it’s a sentiment shift worth noting.
The risk here runs in one direction. Operators in oversupplied markets who are pushing the most aggressive ECRIs are simultaneously generating the highest churn rates and accumulating the most regulatory exposure.
The combination of financial underperformance and regulatory scrutiny in the same markets is what makes this worth watching - not as a prediction of legal jeopardy, but as a risk dimension that wasn’t present two years ago.
What to Listen for in EXR and CUBE Earnings
Extra Space Storage reports 28 April after market close. CubeSmart follows on 30 April. Each report either validates or complicates the thesis above - in real time, with fresh data.
The specific metrics worth listening for on those calls:
- Move-in rent vs. in-place rate spread: this is the roll-down figure. If EXR or CUBE report a spread narrower than the 35% Nareit sector average, it suggests the roll-down problem may be peaking. If the spread is wider, the ECRI math gets worse.
- Management commentary on ECRI strategy or churn attribution: any softening of language around rate increase aggressiveness - or any acknowledgment that churn is affecting same-store performance - would be a meaningful signal.
- Whether FFO results mask same-store softness: PSA’s Q1 showed this pattern clearly. If EXR or CUBE deliver similar splits - FFO in line or ahead on ancillaries and cost controls while same-store revenue stays flat - that’s a sector-wide pattern, not a PSA-specific one.
PSA’s call on 28 April, with new CEO Tom Boyle leading his first earnings discussion, is the immediate next event. His framing of the ECRI-occupancy trade-off will set the tone for how the market reads the rest of Q1 earnings season.
For operators in oversupplied markets, the through-line from this data is fairly direct. The ECRI playbook that worked from 2021 through 2023 was calibrated for a different rate environment - one where roll-downs were manageable and move-in demand was strong.
The current environment, with a 35% roll-down and accelerating rate declines, calls for a different calibration before the summer leasing season. The operators who are already running that math are the ones whose portfolios are likely to look different by Q4.
Worth watching over the next two earnings calls.
