Eric Lefkofsky House: The $19.5M Glencoe Mansion That Still Holds Chicago’s Record

The Record Chicago Still Can’t Beat

In August 2014, a buyer nobody could name paid $19.5 million in cash for a crumbling 1917 mansion on Lake Michigan in Glencoe, Illinois. No home in the Chicago area had ever sold for more.

The buyer was Eric Lefkofsky, the Groupon co-founder who was building his next company, Tempus. That purchase is the story behind the eric lefkofsky house. Twelve years on, the price he paid is still the number every Chicago listing is measured against.

The old version carried details I could not verify: a named smart-home system, rare marble, a value projected through 2030. All invented. This update keeps only what real outlets reported.

The $19.5M Deal in Plain Numbers

The French Normandy character of the 1917 Shaw-designed Glencoe mansion (representative photo).

Every number above comes from the Chicago Tribune, Crain’s Chicago Business, or RealtyWire. Anything I could not source, I left out. You will not find a bedroom count in that table. No verified one exists.

Who Is Eric Lefkofsky?

Eric Lefkofsky, the billionaire founder behind Groupon and Tempus AI.

Lefkofsky is the rare founder who kept winning after the first win. Groupon made him rich in 2008. Tempus, his cancer-data company, made him far richer. He did not chase one lucky exit and fade. He built, and built again.

A Michigan kid, law degree in hand, who never practiced a day. Groupon in 2008 with Andrew Mason and Brad Keywell, then the venture firm Lightbank, then Tempus as founder and CEO. With his wife Liz he co-chairs the Lefkofsky Family Foundation, funding education and medical research.

Where Does Eric Lefkofsky Live?

The Four Seasons Private Residences at the Surf Club in Surfside, Florida, where Lefkofsky reportedly bought a $30.7 million penthouse in 2018.

The $19.5 million lakefront estate remains his main home as far as any public record shows. Never listed, never reported sold, and Crain’s still puts his name at the top of the area’s all-time sales list. Billionaires this wealthy usually collect properties like baseball cards. Lefkofsky mostly held this one.

He did add a Florida escape. In 2018 he reportedly paid $30.7 million for penthouse 7 in the south tower of the Four Seasons Private Residences at the Surf Club in Surfside, the Richard Meier glass towers built into the historic Surf Club (the club itself opened on New Year’s Eve, 1930). Dirt reported in 2021 that he bought a Balinese-style Montecito estate from Ellen DeGeneres and Portia de Rossi for $33.3 million. Both are second homes. The question “where does he live” still points north, to the lake, much like the crowds searching for where Todd Howard lives.

Walking the Bluff: What the Public Record Actually Shows

The scale of a century-old mansion interior (representative photo; the estate’s interiors were never published).

Come with me to the gate. I cannot take you through the front door, and anyone who claims they can is selling you fiction. The outside story is well documented, though, and it beats the invented interior tours the old page carried.

You arrive by private road, because the estate sits on one. The house dates to 1917, drawn by Howard Van Doren Shaw, the architect who defined Chicago’s North Shore a century ago. Only part of what Shaw drew still stands. When David Helfand bought the place for $6.8 million in 2002, it was threatened with demolition. His architect, Marvin Herman, tore down roughly two-thirds and rebuilt outward to 15,800 square feet, even pushing the bluff line closer to Lake Michigan. Two years of work.

On the grounds: a pool and a tennis court. The only exterior features the press ever confirmed. The property was never on the MLS, so no room count and no floor plan ever went public.

And that is where I stop. The eric lefkofsky house has no verified bedroom count and no named countertop stone. If a site tells you otherwise, ask for the source. There is none.

The Paper Trail: From a $6.8M Rescue to $19.5M Cash

Money leaves footprints even when buyers hide behind LLCs. This is the paper trail behind the eric lefkofsky house, in order.

2002: David Helfand, co-president of Sam Zell’s Equity Group, buys a threatened 1917 Shaw mansion in Glencoe for $6.8 million. Demolition was the likely alternative.

2002-2004: Helfand’s team demolishes about two-thirds of the structure and rebuilds it to 15,800 square feet, extending the bluff toward the lake. Chicago architect Marvin Herman runs the project. Roughly two years of work.

August 2014: A Delaware LLC pays $19.5 million in cash. Crain’s calls it likely the highest residential price ever paid in the Chicago area. The previous high was $19 million in 2006, when the federal government sold a convicted insurance magnate’s Highland Park estate to a builder. Lefkofsky beat it by half a million, in cash, without a listing.

Late 2014: The Chicago Tribune names the buyer: Groupon co-founder and CEO Eric Lefkofsky. Mystery over.

A footnote most profiles miss. Crain’s later reported that Lefkofsky and his wife sold their earlier Glencoe estate, a six-bedroom, 11,029-square-foot property, for $5.175 million. The big purchase made the old one expendable. That is how it works at this level: you do not trade up, you shed.

Plenty of celebrity purchases follow the same arc, minus the record. The Blueface house story is a cheaper version of the same pattern, minus twelve years and about nineteen million dollars.

Why the Number Still Matters in 2026

Twelve years is a long time for a record to stand. Chicago’s luxury market did not sleep. It just never cleared $19.5 million for a single home.

The closest call came in 2026, when a 1936 Georgian mansion on Sheridan Road in Glencoe sold for $17.5 million, the top Chicago-area price of the year. RealtyWire, citing Crain’s, spelled it out: that sale “falls short of Glencoe’s all-time residential sale record,” which is still Lefkofsky’s 2014 purchase. Twelve years, a pandemic boom, and the record did not move.

That is the real significance. The sale told the national market that Chicago-area lakefront could play in the same league as coastal trophy property. Before 2014, people assumed the Midwest could not touch those numbers.

What You Can Steal From This Mansion

You are not buying the eric lefkofsky house. Fine. The deal still teaches things that work at normal prices.

• Buy the rescue, not the trophy. Helfand bought at $6.8 million when demolition was on the table, then created the value himself. The Lefkofskys paid full freight, but the money was made in 2002, by the guy willing to buy a wreck.
• Pedigree needs real bones. A 1917 Shaw design only matters because the house was genuinely saved and rebuilt, not because someone said “historic” in a listing. Buying an old home? Check what is original and what was rebuilt.
• Lakefront is a maintenance bill, not a view. A bluff on Lake Michigan means erosion, brutal winters, constant drainage work. Helfand literally moved the bluff line. Gorgeous? Absolutely. Cheap to own? Never.
• Privacy is the actual luxury. Private road. No MLS listing. No interior photos. At the top of the market, money buys the right to be left alone. You can get a smaller version of that with a good fence and a house set back from the street.
• Hold. Lefkofsky bought in 2014 and, as far as anyone can tell, simply kept it. No flip, no drama. The record aged into legend because he sat still. The cheapest strategy in this whole story, and the hardest to copy.

Want more of these? Our celebrity house stories keep the same honest standard, numbers first, myths removed.

Quick Questions, Straight Answers

Does Eric Lefkofsky still own the Glencoe house?

As far as any public record shows, yes. He bought it in 2014 and no sale has ever been reported. Crain’s still names his purchase as the area’s all-time record.

How big is the house, really?

Crain’s reported 15,800 square feet on 4 lakefront acres, the size it reached after the 2002-04 rebuild. Any bedroom or bathroom count you see online is unsourced. I looked.

Who designed it?

Howard Van Doren Shaw drew the original 1917 mansion. What stands today is mostly a 2002-04 rebuild by Chicago architect Marvin Herman, who kept the Shaw bones and expanded them.

Did he really pay $19.5 million in cash?

Yes. The Chicago Tribune reported the all-cash price in 2014, paid through a Delaware LLC. It was the highest residential sale in Chicago-area history at the time.

What is Eric Lefkofsky’s net worth?

Forbes put him at $6.5 billion on its 2026 Forbes 400 list, driven mostly by his Tempus stake. Reported, and it moves with the stock.

Does he own other homes?

Reported, yes: a $30.7 million Surfside penthouse at the Four Seasons Surf Club bought in 2018, and a $33.3 million Montecito estate bought from Ellen DeGeneres in 2021, per Dirt.

The Eric Lefkofsky House Stays Put, and So Does Its Record

Here is the strange part. For a $19.5 million purchase, almost nothing happened next. No resale. No public renovation saga. No scandal. The man bought the most expensive house in Chicago-area history and lived in it quietly for over a decade.

That quiet is the story. While other celebrity purchases churn through listings and price cuts, this one just sat there, getting more valuable by doing nothing. The 2026 market tried. It came up two million short.

Will the record fall? Probably, eventually. Lakefront land does not multiply. But until it does, the eric lefkofsky house holds a title no marketing budget can buy: the most expensive home Chicago ever sold, bought in cash.

If you like house stories told straight, the Jim Carrey house tour and the Sydney Sweeney house tour follow the same rules: verified numbers, no invented marble.