The Secret Algorithm Behind Higher Rents. (And Why It Just Got Banned)

How landlords used software to share pricing data and coordinate rent hikes—until the government forced them to stop

If you rent an apartment, you probably paid an extra $70 a month in rent last year. You didn’t know it. You couldn’t negotiate it. But you paid it. In some cities it was much worse. $181 a month in Atlanta. $136 in Denver. Nationwide, renters overpaid by $3.8 billion in 2023 alone.

Your landlord didn’t act alone.

In November 2025, the Justice Department forced the company behind this system to shut it down. But for over a decade, the nation’s biggest landlords used an algorithm to do something that would’ve been illegal in a conference room.

This Wasn’t Normal

You know how all the apartments in your neighborhood cost about the same? Different buildings. Different management companies. But somehow the one-bedrooms all hover around $1,800, and the two-bedrooms cluster near $2,400.

That’s just the market, right? Wrong. In many cities, it was collusion.

In one Seattle neighborhood, 70% of the apartments—over 9,000 units—were controlled by just 10 property managers. Every single one used the same pricing software. Nationwide, the Biden-Harris Administration estimated that one in four multifamily apartments used this platform.

The company is called RealPage. And what they built was essentially a price-fixing cartel with really good UX.

Building a Cartel With Code

Landlords upload the kind of information renters normally don’t get to see. Not the rent they advertise, but the actual rent tenants pay—plus occupancy numbers, renewal rates, how many concessions they’re offering. Every secret they’ve got. In business school, they call this “competitive intelligence.” In law school, they call it “evidence.”

RealPage takes all this private data from landlords who compete with each other and pools it. Then, its algorithm looks at what everyone’s competitors are actually charging and spits out a recommendation for what each landlord should charge for an available unit. Updated daily.

And landlords follow these recommendations 90% of the time.

One landlord started using the software and raised rents within a week. Eleven months later? 25% more. RealPage literally marketed their ability to help landlords “exceed the market” by 2-5%.

But here’s the part that really gets me. One of RealPage’s own developers told ProPublica that leasing agents have “too much empathy” compared to what algorithms provide.

Think about that for a second. The problem, according to RealPage, is that humans feel bad about gouging renters. The solution? Remove humans from the decision. Which, if you think about it, is basically the mission statement of Silicon Valley: “What if we could be terrible to people, but faster?”

The software also pushed landlords to stop offering concessions—no free months, no move-in discounts. It even suggested keeping units vacant rather than lowering prices. When everyone sees the same signals, nobody undercuts anyone.

Why “It’s Just an Algorithm” Isn’t a Defense

Federal regulators started using an analogy that makes this whole thing click. They call it the Bob test. No, I’m not making that up.

Imagine all the landlords in your city gave their private pricing data to some guy named Bob. Bob looks at everything—who’s charging what, who’s got vacancies, who just renewed their leases—and then tells each landlord what to charge based on what their competitors are doing.

That’s price-fixing. Illegal, right?

Now imagine Bob is an app.

“Your algorithm can’t do anything that would be illegal if done by a real person,” the FTC and DOJ wrote in a joint filing. The tool doesn’t change the rules.

For years, landlords claimed plausible deniability—they never talked directly. Sure, they used the same software, fed it competitor secrets, and followed its recommendations. But that wasn’t collusion, right?

Courts didn’t buy it. Federal prosecutors argued that “algorithms are the new frontier” of collusion. When competitors share nonpublic information through a common intermediary, who then recommends prices based on that pooled data, and the participants follow those recommendations? That’s coordination. You don’t need the smoke-filled room anymore.

What made RealPage illegal isn’t that it used fancy algorithms to analyze rental markets. Plenty of companies do that, and legally. It’s that it got competitors to feed the algorithm their secrets and then used those secrets to tell everyone what to charge.

That’s the line.

How It All Fell Apart

October 2022: ProPublica published a deep investigation into RealPage’s market penetration and how the whole system worked. Within weeks, the DOJ opened an investigation.

By August of 2024, the DOJ sued. Eight states joined. The complaint ran over 100 pages and included internal RealPage documents showing the company understood exactly what it was doing: helping landlords avoid “the race to the bottom” and ensuring that “a rising tide raises all ships.” It reads like a business strategy written by a fortune cookie.

In January 2025, the DOJ expanded the suit, going after six major landlords, including Greystar (the nation’s largest). Combined, these companies manage 1.3 million apartments in 43 states.

Greystar settled first, agreeing to pay $7 million to various states and to stop using competitor data for pricing. The others are still fighting.

Then in November 2025, RealPage settled.

Here’s what RealPage has to do: stop using real-time competitor data (only 12+ month-old historical data is allowed), stop local market targeting, kill anti-competitive features—like the “Governor” function that favored price increases—stop intelligence gathering, accept three years of court monitoring, and cooperate with prosecutors still going after landlords.

The whole thing takes effect in mid-2026. That’s 180 days to quit doing the thing they claim they weren’t doing wrong in the first place, but have agreed to stop doing. Got it.

But, and this is a big but, RealPage paid exactly zero dollars in fines and admitted no wrongdoing. Which is a hell of a deal, really. It’s settling a speeding ticket by promising to eventually slow down, maybe, if it’s convenient.

RealPage claims the settlement actually “blesses the legality” of its business model going forward.

Critics called it “lipstick on a pig.” The government says it restores competition. The truth is probably somewhere in the middle. But at minimum, the real-time data-sharing mechanism that enabled the coordination is now dead.

Meanwhile, 22 states have introduced legislation targeting algorithmic rent-setting. California and New York actually passed laws banning it. Cities from San Francisco to Minneapolis said landlords can’t use these systems at all.

The enforcement wave is just getting started.

What Happens Next?

Will your rent go down?

Probably not. The settlement kills the coordination. Landlords have to price independently again after losing access to a real-time view into what their competitors are doing. That should restore competition, at least somewhat. Maybe negotiation becomes possible again. Maybe concessions start coming back.

The underlying housing shortage is still here. Even the White House acknowledged that undersupply is the “root cause” of high housing costs. You’re still dealing with corporate landlord consolidation, rising property taxes and insurance, and general inflation. The algorithmic coordination was making a bad situation worse. But stopping it doesn’t make everything suddenly affordable.

What can you do?

Ask point-blank if the property uses algorithmic pricing software. Try negotiating. If agents or landlords won’t budge on anything, you’re probably dealing with the algorithm. Watch what happens through 2026, and report suspected violations to your state attorney general.

The Bigger Picture

This is the first major algorithmic pricing enforcement victory. It won’t be the last.

Similar cases are already brewing in other industries, like hotels, gasoline, and e-commerce. The question is the same everywhere. Can companies use the same algorithms, feed them competitor data, and claim it’s not coordination?

The answer seems to be no. Analyzing data with an algorithm is fine. Using algorithms as a backdoor channel for price fixing? Not fine. The tool doesn’t change whether the behavior is legal. The Bob test works for any industry. If you couldn’t do it through a human consultant, you can’t do it through code.

RealPage marketed its software as making rental pricing “data-driven” and “scientific.” And it was, just driven by competitors’ secrets instead of actual market forces.

That’s not competing better. That’s not competing at all.

For a decade, landlords did something through an app that would’ve been illegal if they’d done it in a conference room. The algorithm made it feel legitimate. Automated. Neutral. Just “the market” working efficiently.

Except markets only work when competitors are allowed to compete. When they all use the same brain, fed with each other’s secrets, you don’t have a market.

You have a cartel with a pretty app.