Gabe Newell's $71M Florida Mansion Has a Tunnel to the Sea

"We found a great family, it seems, to buy that home from us," previous owner Ron McMackin told the Wall Street Journal. The home in question is a 20,000-square-foot mega-mansion in Manalapan, Florida, and the buyer is Valve co-founder Gabe Newell, who paid $70.8 million for it. The property officially changed hands on June 15, according to its Zillow listing, closing at roughly 16% below its $85 million asking price.

The headline feature is an underground tunnel that connects the waterfront estate directly to the beach, giving Newell private ocean access without ever stepping outside. A 2020 promotional video from Premier Estate Properties shows off the tunnel alongside the rest of the property: an outdoor pool, a dock with a boat lift, an eight-car garage, a wine cellar, guest quarters, and a "wellness wing." Seven bedrooms. Thirteen bathrooms. The kind of square footage where you could lose a guest for a few hours.

McMackin and his wife Cindy, founders of mechanical subcontracting company Pan-Pacific Mechanical, originally bought the property for $39 million in 2020, turning a healthy profit on the sale to Newell.

$71M Is the Small Purchase

What makes this story properly absurd is the context. For Newell, a man with an estimated net worth of $11 billion, this mansion might be the most restrained thing he's bought recently. Late last year, he picked up a $500 million superyacht called [the Leviathan](https://www.forbes.com/sites/katiadamborsky/2026/05/05/inside-leviathan-why-gabe-newells-new-yacht-is-a-total- /), kitted out with an onboard hospital, a lab, a spa, and gaming stations. He's also spending $230 million on a deep-sea research vessel designed to carry 70 scientists and map the deepest oceanic trenches by 2028, complete with two-person submersibles rated for 6,000 feet below sea level. The Florida house, by comparison, is practically a rounding error.

Newell has spent recent years living at sea rather than near Valve's Bellevue, Washington headquarters. In a 2025 interview with a small YouTuber named Zalkar Saliev, the 63-year-old described his daily routine: wake up, work, go scuba diving, work more, hit the gym or dive again, then work some more. "I work seven days a week," he said. "I like working. It's fun. To me, it doesn't feel like work."

I find the whole thing fascinating and slightly surreal. Here's a man who runs the platform that takes a 30% cut on most PC game sales, who presides over a company that prints money without ever needing to go public, and his response to that wealth is to build a personal ocean exploration fleet and buy a house with a tunnel to the sea like a Bond villain who got really into marine biology. Meanwhile, Steam Deck prices went up this year, and Steam's community forums remain a moderation disaster that developers have been vocal about for years. The juxtaposition writes itself.

None of this has any bearing on Half-Life 3, Valve's next hardware move, or anything players actually care about from a product standpoint. Newell can spend his money however he wants. But when the guy who owns the storefront where most of us buy our games is casually dropping $71 million on a mansion between yacht purchases, it does put Valve's pricing decisions and platform policies into a certain light. The Manalapan estate sits just down the road from Mar-a-Lago, placing Newell in one of Florida's most exclusive communities.