High apartment retention rates, usually read as a sign of a steady market, are instead concealing a turbulent period in parts of the multifamily sector. Beneath those numbers, landlords in oversupplied markets are leaning on aggressive concessions and a "protect the back door" strategy that keeps tenants in place while signaling that pricing power remains weak.
Two Sides of One Strategy
Today's elevated renewal rates are not evidence that renters are suddenly more satisfied or that rent growth is poised to take off, Grant Montgomery, national director of multifamily analytics for CoStar and Apartments.com, told GlobeSt.com. Rather, he said, they are one outcome of the same defensive playbook that has produced widespread concessions, especially in high‑supply Sun Belt markets.
"These elevated concessions and strong retention are really two outcomes of the same strategy that operators are using in oversupplied markets," Montgomery said.
Apartments.com data shows that more than four in ten multifamily properties in Sun Belt cities are offering concessions, which are pulling effective rents down even as posted asking prices appear to hold steady.
At the same time, retention rates remain above roughly 60% across the apartment REIT universe, noticeably higher than the roughly low‑50% range that was more typical a decade ago. In some cases, the math has flipped to the point where renters are paying more to renew than they would if they moved, yet they are staying put.
That behavior is less about confidence and more about cost and friction, Montgomery noted. Owners in competitive markets are weighing the expense of a vacant unit – lost rent during downtime, turn costs like paint and carpet and the risk of slower lease‑up when supply is heavy – against the expense of a concession to keep an existing resident in place. Often, he said, it is simply cheaper to take the hit on a concession than to roll the dice on an empty unit.
Leaning Into "Protect the Back Door"
Publicly traded operators, in particular, are prioritizing occupancy and cash‑flow stability as new supply delivers. Several large REITs have reported their lowest turnover in history on recent earnings calls, implying retention in the high‑50% to low‑60% range and describing renewal trends as "very strong" or at "record levels."
Montgomery said those disclosures provide a useful window into behavior that is likely being replicated more broadly across the sector as owners try to smooth out income during a choppy phase of the cycle.
For renters, the environment amounts to a strange moment in which mobility could offer a financial advantage, but inertia wins out. Moving carries its own costs and frictions – deposits, movers, time and disruption – and in many cases, households still view their current unit, concessions included, as the best available option. That gives owners "a little more pricing power with the person that you already have in the door," as Montgomery put it, even as they feel compelled to sweeten the deal for new leases to stay competitive.
The result is a market that can look deceptively calm on the surface: fewer move‑outs, high renewal rates and stable occupancy. It's the "protect the back door" strategy.
Yet the stability is being "actively defended," as Montgomery described it, with elevated concessions and cautious rent‑setting that reflect an underlying imbalance between supply and demand.
"Strong retention doesn't necessarily mean rent growth is about to accelerate," he said. "It doesn't mean the supply pressure is cleared… it's perhaps masking the volatility."
When Supply Pressure Eases
How long that disconnect persists will depend on how quickly the new supply is absorbed and when owners regain confidence that they can push rents without triggering costly vacancies. Montgomery expects rent growth to recover first as market conditions eventually tighten, with retention likely normalizing later once operators feel less need to defend every in‑place tenant.
For now, though, high retention is less a vote of confidence in the market than a sign that both owners and renters are hunkering down and that the real action in rents is happening out of sight, in the fine print of concessions rather than in the headline numbers.
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