The Secret to Selling a $100 Million Mansion - Kanebridge News
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The Secret to Selling a $100 Million Mansion

They’ve dealt with billionaires, signed NDAs and fielded bizarre requests. Four real-estate power brokers dish on how they got the deal done.

By KATHERINE CLARKE
Wed, Nov 20, 2024 8:39amGrey Clock 11 min

The first $100 million home sale in the U.S. happened in 2011, when Russian-born billionaire Yuri Milner purchased a lavish mansion in Silicon Valley in a nine-figure deal. Back then, Milner’s buy was an outlier and set an ambitious benchmark for the luxury market. Nowadays, as the ranks of ultra wealthy individuals swell globally, $100 million-plus transactions barely cause ripples in markets like New York, Miami, Los Angeles, Palm Beach, Fla., and Aspen, Colo. More than 40 transactions have closed nationally at or above that benchmark in the intervening years, according to appraiser Jonathan Miller .

Behind those deals are a small group of real-estate power brokers responsible for marketing and selling the homes to the billionaire class. We talked to four agents whose deals have crossed the nine-figure threshold about how the biggest transactions really unfold. The interviews have been edited for clarity.

For real-estate agents, landing a high-profile or billionaire client is a painstaking and competitive process, and often means pitching against rival agents. Each agent has their own secret for getting an advantage.

JILL   HERTZBERG : “You’ve got to read the paper and watch the news. I remember when Shaquille O’Neal was coming to the Miami Heat, each person on my team probably called 100 people, asking ‘Do you know Shaq?’ One person would give us the name of another person and then another person. We were lunatics.

We finally got to him and he said, ‘No, I have an agent already.’ But we convinced him to give us a couple of hours, and that no one knew Miami like we did. The first house we took him to was the one he eventually bought, a beautiful estate on Star Island.

RYAN  SERHANT: For the buyers we know who are trophy-home hunters, we keep our eyes on the homes in Palm Beach, Miami, Texas, Colorado and California that could go at these price points. We keep tabs on whether the owners would be willing to sell.

HERTZBERG: We went on a really big listing appointment on La Gorce Island in Miami Beach once. They asked us to come Tuesday at 10 a.m. When we showed up, there was another top agent already sitting on the patio. Another one arrived soon after. They had lined us all up at half-hour intervals. There was a little smile there to each other, like maybe we should just all do it together.

For $100 million homes, the prospective buyer pool is relatively small. That often means dealing with the same people over and over.

RAYNI WILLIAMS: It’s a very elite group of people. A lot of times they are collectors of trophy homes. Even if they don’t want to buy the property, they often will call because they want to come see it. It’s just a vanity showing. For me, it’s kind of like being a docent in an art gallery. They are coming in to admire the art. They’ll say, ‘please tell me about this architecturally significant property,’ and ask me what I know about Tadao Ando, the Japanese architect whose work is really in vogue. You’re cultivating relationships. Wealthy people love to educate themselves on all the latest and greatest.

Pricing homes at the highest end of the market is more art than science. Frequently, luxury homes come on the market for big-ticket prices, but later sell for significantly less .

WILLIAMS: It starts with the seller and what their expectation is. It’s about replacement cost, location and then data. You have to take into account how much it’s going to take to get them out of there without losing money, and the brain damage that it would take for somebody to re-create the property. People at this level are willing to pay a premium when they find something they love, because maybe they are getting older and they only have 20 good summers left, or their grandchildren are getting older. What is the value of your life if you’re under construction and you’re taking daily and weekly construction and design meetings? It’s a headache and a lot of clients tell me it can be hard on their marriage.

HERTZBERG: We’re going to go to the highest number we can possibly get without tipping over, then see how the market responds. If you tip over, that’s when you have price reductions, or you lose the listing or people get unhappy. Sometimes, you advise the seller to price at $100 million and then he speaks to other agents and they say $200 million. The seller will say, ‘We’re going to go with them, because they believe in the property more.’

RILEY  WARWICK: Some agents have a strategy I don’t particularly subscribe to, which is to take a listing at all costs or at any price, then use it to market themselves. They say, ‘Well, who knows, maybe someone will pay this. Or if I can get the fish in the boat, then I can lower the price until eventually someone buys it.’

SERHANT: Sometimes the best marketing plan is to have no price, and not go officially on the market at all. Oftentimes, especially with super luxury homes, people want what other people can’t have. We’ve had buyers pay a premium because they don’t want the seller to put the property on the market. They don’t want anyone else to have it, and they don’t want anyone talking about it ever.

In 2017, a Los Angeles spec house became the highest priced home in the country when it listed with Williams for $250 million. It was the creation of Bruce Makowsky, who made a fortune selling handbags on QVC. It sold in 2019 for $94 million, plus $10 million of furniture. 

Bruce Makowsky at his Bel-Air spec home, named Billionaire. Photo: Jae C. Hong/Associated Press

WILLIAMS: I think his strategy was just to get it on everyone’s radar. It worked. We touched hands with every single extraordinarily wealthy person that came to L.A. at that time. They all wanted to see it. At one point, he had a $150 million offer from a local that really wanted it and Bruce didn’t take it. I think he wanted it to be the most expensive house in the world and he wanted the price to have a 2 in front of it. Years later, he ended up selling it for $104 million to one of the first people who ever saw it. (The purchase was tied to Saudi real-estate magnate Fawaz Al-Hokair. )

These houses either sell in three months, or they sell in three years. They are hard to sell quickly because it’s a discretionary purchase. It’s emotional. This isn’t a family that’s relocating from New York City and has to get here to get their kids into school in Bel-Air. This isn’t a family that needs a house. If you’re buying a $100 million-plus dollar house, you already have a really nice home somewhere.

Even the most expensive homes often need to be staged 

WARWICK: That means removing potentially offensive items. We’ve had animal mounts replaced with contemporary art and political flags or signs removed. People get very offended. I’ve had people walk into an ultra luxury home, see an animal mount and turn around and walk right out. More than once.

Many brokers approach finding a buyer for a mega-listing systematically, but sometimes it comes down to chance.

SERHANT: You’re mass marketing and you’re also target marketing. We draw up a list of names from the Forbes list, the Bloomberg Billionaires Index, all the global wealth lists. We look at which companies went public over the last 24 months, which companies are about to go public. Who recently had or is about to have a liquidity event? Have there been major marriages or engagements? Sometimes, I think I know exactly who the buyer is going to be for a New York apartment, and then it’s a fracking billionaire from Texas. I’m like, really?

I once went to Masa, the expensive sushi restaurant in New York, with my wife. The couple next to us recognises me. He recognised me from TV. She recognised me from TikTok. I saw that she had a really big rock on her finger, so I asked if they were engaged. I suggested they needed a new place. Two weeks later, I sold them a full-floor apartment at Central Park Tower for $50 million.

Serhant recently had the listing for a $250 million penthouse at New York’s Central Park Tower. The triplex spans from the 129th to the 131st floor. Photo: SERHANT. Studios

Listings for trophy homes inevitably draw millions of eyeballs. Agents must determine whether interested parties are qualified buyers before they let them in the door.

SERHANT: To see a $100 million house, you need to show the ability to close in cash or that your net worth is over $1 billion.

WILLIAMS: Nobody gets into my properties unless I can prove who they are. Ninety-nine percent of people can be googled, except Asian buyers. If they can’t be googled, then we require proof of funds, usually in the form of a letter from a bank or private wealth manager on professional letterhead. It’s usually not hard to verify if somebody is real or not. If you are a mega-buyer, you have a footprint. You’ve donated money, you’ve been photographed.

SERHANT: There are con artists everywhere, there are people that want to waste your time everywhere. Even billionaires. Sometimes they are just in New York or they are in Florida and they fancy seeing something nice. They have no intention to buy.

HERTZBERG: If they say they are under the radar, we don’t take them. Nowadays, no one’s under the radar who has money.

Dealing with the global elite often requires being flexible for showings.

SERHANT: I’ve done showings in the middle of the night and early in the morning when the streets are totally empty. I had a very prominent and recognizable guy in finance who asked to see a New York property at 4:30 a.m. I understood why he did it. He knew that no one would see us. I’ve also had people wear disguises. I had somebody pre-Covid, a celebrity, who wore a baseball hat with a long black wig underneath and sunglasses. Post-Covid, everyone just wears masks.

WILLIAMS: Sometimes, a really high-profile person will register the name under their CFO or under an alias of another prominent person that would still be approved for the showing. And then when they turn up, you know who they are, and you play along.

And it can require pulling out all the stops.

WILLIAMS: I once had a guy who had just had a ton of success and he told me during the first showing that he was soon headed to Miami with his friends to celebrate. He wanted to bring them to see the house before they headed to the airport. I tried to get into the psyche of this guy and what he was into. I did some research and I found out that he loved gaming, so in the movie theatre, I put an Xbox. He had told me that he loved Japanese food, so I had catered sushi with servers throughout the property. Then, I got these gorgeous Ralph Lauren leather satchel bags as carry-ons he could take on the plane and filled them with chocolate from all the best spots in L.A., as well as marketing materials for the home. He texted me from the plane to say how incredible the experience was. And he bought the house. For $70 million.”

WARWICK: You think that these incredibly successful people are so busy, but I actually find them to be interested in every little detail of the properties we show them. One of my clients wanted to walk the entire property line of a 40- or 50-acre property, which took about an hour. They wanted to understand the land they are buying. One client was very fixated on the picture frames in the house and they wanted the seller to leave them behind, over 100 of them. The seller had to take their own family photos out of every single frame. I had another client who came in with their own water-testing kit to test the drinkability of the water and make sure the PH level wasn’t too high. They wanted the water in the kitchen to have a higher mineral content for their espresso machine.

Sometimes agents field unusual requests from sellers and buyers

WARWICK: I’ve seen more than once where a buyer will allow the seller to stay in the property or rent the property back for sometimes up to a year, or return for a holiday. I’ve had a seller want just one more Christmas in the house with their family, and the buyer allowed them that. I’ve also had deals where people trade additional houses as part of the transaction. The buyer has a property in another state, so they’ll give the seller X dollars plus their house in another state.

SERHANT: We had one very well known mega-billionaire come through a $250 million penthouse listing in New York. That apartment has the highest private residential ballroom on the planet. We’re standing in that empty room and he beckons me over with his finger. He says, ‘If I put a ping pong table in this room, will it be the highest ping-pong table on earth?’ I was like, ‘I’ll have to check, but I think it’s definitely up there.’

The Central Park Tower penthouse had its price cut by $55 million in fall 2023, a year after being listed. It is no longer on the market. Photo: Evan Joseph

WILLIAMS : We had somebody that wanted to test out the house, and use it for a weekend. I wasn’t convinced but the seller wanted to do it. The person probably wanted to do their own thing, but I couldn’t help myself. I went full on to make their experience as pleasurable as possible. I had a masseuse and a private chef come to the house to cater to them. If they wanted freshly-baked chocolate chip cookies at 3.30 in the morning, they could have them.

The typical commission for an average real-estate sale is 6%, split between the buyer’s and seller’s agents. For nine-figure luxury homes, agents often settle for a lower fee. 

WILLIAMS: Taking on these big listings is expensive, and you have to have a big book of business to afford it. You can spend $100,000 out of your own pocket to market these. The commission is usually a 2% fee, but they might ask if you would do it for a little less, like 1.75%. But generally speaking, the most successful people I’ve worked with are very happy to pay the full commission. They want you to do an amazing job.

WARWICK: We fly videographers in from all over the country to film our properties, we have architects design renderings of what could be built on these properties, we do all-day photoshoots from sunup to sundown.

Any out-of-pocket expenses aren’t reimbursed or paid back should an agent lose the listing before it sells.

WARWICK: It’s a huge financial commitment and sometimes you carry these properties for a year or two. It’s a risk and that’s why sometimes we don’t take listings. If the seller is unrealistic, it’s an investment not worth making.

It’s very common for buyers and sellers at the top end of the market to ask agents to sign nondisclosure agreements, preventing them from speaking about the parties involved in the deal. However, news of the transaction often leaks regardless.

SERHANT: It’s tough to keep the deals private because of everyone that touches the transaction. Your buyer is coming in contact with door staff, the seller, the other real-estate agents that might be involved and their teams, the driver. There are points of contact everywhere. I spend a lot of time making sure that everybody in the transaction is aware of the confidentiality.

HERTZBERG: I would love for people to know that I work with these types of people, but it’s more important to work with the people. It’s funny because I’m married to a litigator and he has so many confidential relationships that I don’t know about. If I have a big deal with an NDA, I can’t tell him the name either. We just don’t go there.

Negotiations often require creativity. 

WILLIAMS:  I was doing a deal close to $100 million and there was a $5 million delta between what the buyer was offering and the seller was willing to accept. It’s all relative; at that price point, $5 million is not a big difference. I normally wouldn’t do this, but I decided to get them together. I had them meet in a private room at the Beverly Hills Hotel. We ordered them some food, set them up and then left. By about four or five hours later— maybe some cocktails were involved— they bridged the gap and split the difference. Sometimes, you have to be smart enough to know to get out of the way. The two of them are still friends.

Dealing with the wealthiest clients comes with perks.

WILLIAMS: After I sold the Bruce Makowsky house, he called and said, ‘Meet me in your office in 20 minutes.’ He walks in with this huge, white box and plops it on my desk. Inside, there’s a coffee-table book all about his megayacht. “It’s yours,” he said. He gifted us 12 days on his yacht, which was docked in St. Barts. I took my whole family and best friends.



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A haven for hedge-fund titans and Hollywood grandees, Greenwich is one of the world’s most expensive residential enclaves, where eye-watering prices meet unapologetic grandeur.

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A haven for hedge-fund titans and Hollywood grandees, Greenwich is one of the world’s most expensive residential enclaves, where eye-watering prices meet unapologetic grandeur.

By Jim Motavalli
Tue, Apr 7, 2026 4 min

Greenwich, Connecticut, is in New England (just barely), but that doesn’t mean it’s a quaint, sleepy small town with covered bridges and white churches on the green. 

It’s leafy, certainly, but it’s also a luxury-minded power centre close to New York City, with many celebrity residents (director Ron Howard, singer Diana Ross, actor Meryl Streep and, at one time, Australia’s own Mel Gibson).  

The main shopping street, Greenwich Avenue, is home to brand stores such as Hermès, Kate Spade, Saks Fifth Avenue, and Tiffany & Co. 

And Greenwich, particularly in the “back country” north of the Merritt Parkway, is host to some of the most exclusive real estate in the world.  

The average price for a single-family home in the second quarter of 2025 was USD $3.25 million (AUD $4.9 million). But that’s merely an entry point, buying a smaller home in one of the town’s less desirable neighbourhoods. 

What does USD $43 million (AUD $66 million) buy in Greenwich?  

Last autumn’s most expensive listing offered a 1,068-square-metre waterfront home with eight bedrooms and 11 bathrooms, plus “Gatsby-like lawns”, a gym, games room, party room, wine cellar, fruit orchard, pool and spa. The front and side porches have heated floors. 

Prefer something more traditional and secluded? For USD $33 million (AUD $50 million), buyers could close on an 11,760-square-metre Georgian manor on 3.2 hectares, featuring eight fireplaces, an elevator, and a dumbwaiter.  

The first floor features a three-storey cascading chandelier. For bibliophiles, there’s a two-storey mahogany library. If bocce is more your pace, a similar USD $25 million compound on 7.5 hectares, built for a liquor magnate in 2009, may appeal. Fourteen bathrooms should suffice. 

The Greenwich market is strong, but not without challenges.  

“The big problem is that there’s no inventory,” said Evangela Brock, an agent with Douglas Elliman. “It’s extremely low at all price points.”  

In November, just 15 properties under USD $1 million (AUD $1.52 million) were listed without contracts, compared with 23 above USD $10 million (AUD $15.2 million). Of those, six had contracts pending. Greenwich has more than 17,000 single-family homes. 

Kanebridge Quarterly toured two mid-priced houses in Greenwich. “You don’t lose money in Greenwich real estate,” said Beth MacGillivray, a realtor with the Higgins Group. “This is the hot spot.”  

MacGillivray opened the door to a 733.9-square-metre Georgian colonial in the Sherwood Farms Association development her family built in 2005. The house was expected to sell for about USD $5 million (AUD $7,743,535). 

The six-bedroom, four-level house is move-in ready, with staged furniture showing its potential and many of the amenities that buyers in this range expect.  

Visitors enter through a two-storey foyer with a marble floor. A circular staircase leads to an airy living room with double-height ceilings.  

There’s a main bedroom with his-and-hers bathrooms, a cherry-panelled library with cigar-smoke venting, five fireplaces, and a state-of-the-art kitchen with a breakfast nook by Greenwich-based designer Christopher Peacock.  

Most rooms have huge walk-in wardrobes. Even the laundry room has granite countertops. Custom millwork, cabinetry and fixtures are evident throughout. 

The drawbacks? A smaller yard and no pool. Still, refugees from the city would marvel at the abundant interior space. 

Not far away, an entirely different house was on the market for USD $2.66 million.  

The imposing 696.7-square-metre, nine-bedroom, seven-bath Georgian/Federal home on Shady Lane in the Glenville neighbourhood was built in 1900. Its good bones and inherent grandeur were apparent, as was a clear need for updating. 

“It’s a good project for someone,” said realtor Kaori Higgins. “It needs the right buyer, someone who is looking to return it to its stately original condition.” 

Given the hot market, some buyers may be tempted to tear it down and build anew.  

But the house is filled with charming period details, including hand-built stone fireplaces, reading nooks, pocket doors, leaded windows and beautiful original millwork.  

The second floor offers a vast veranda with views of Long Island Sound and a built-in swimming pool. 

The drawbacks? Bathrooms that were awkwardly redesigned in the 1970s, unsightly flooring on the upper levels, and crumbling exterior elements.  

Higgins noted that a nearby sister property, fully renovated, sold for USD $11 million (AUD $17 million). Any buyer of Shady Lane’s faded elegance would need both imagination and deep pockets. 

For contrast, Kanebridge Quarterly left Greenwich for nearby Fairfield’s upscale Greenfield Hill neighbourhood to visit Lion’s Gate, a 595 square metre Tudor Revival home built as a modest dwelling in the 1920s but extensively expanded and remodelled in 2000.  

With three acres of land, a guest cottage, an artist’s studio and a pool house, the asking price is USD $3.3 million (AUD $5 million). Like the Sherwood home, Lion’s Gate is flawlessly move-in ready, with designer touches throughout. 

The entire second floor was added during the renovation and features parquet flooring, a massive main suite, arched doorways and 2.74-metre ceilings.  

Many rooms include walk-in wardrobes, extensive carved millwork and built-ins. The wood-panelled library (on the site of the former stable) is warm and inviting.  

The expansive kitchen includes a window seat with a hand-painted ceiling, a wine cooler and a butler’s pantry. 

Realtor Lorelei Atwood said Fairfield faces the same inventory shortage as Greenwich.  

“Demand is growing as more New York-based executives are being told they have to report to the office,” she said. “Fairfield has always been a commuter town.” 

Why is this home USD $3.3 million (AUD $5 million), and the Sherwood property around USD $5 million (AUD $7,743,535)?  

Location. Greenfield Hill is lovely, but Greenwich real estate occupies a rarefied class of its own. 

Note: Thanks to realtor Sherri Steeneck for chaperoning. 

This story appeared in the Autumn issue of Kanebridge Quarterly, which you can buy here.