A newly built waterfront mansion on Miami's San Marco Island has sold for $48.5 million, setting a new price record for the Venetian Islands. The buyer behind the deal is billionaire venture capitalist Hemant Taneja, according to sources who spoke with The Real Deal.
Taneja, who serves as CEO of General Catalyst Partners, a venture firm based in Cambridge, Massachusetts, is listed on LinkedIn as being based in Palo Alto, California, and has an estimated net worth of $3.6 billion, according to The Real Deal. The outlet reports he bought the 10,700-square-foot waterfront estate on North Venetian Way, though Mansion Global put the home's size at 10,689 square feet, calling it the island's largest house. The sale closed above its $47.5 million asking price, and property records show the sellers were Jacek and Olga Skarzynski, who are associated with Brooklyn-based Maven Construction Corp. They sold the home to a trust managed by Charu Madan.
The Skarzynskis paid $6 million for the property in 2021, per records cited by The Real Deal, though Mansion Global reported the purchase price as $5.9 million. The home first hit the market in December asking $60 million before the price was reduced several times to $47.5 million. Matthew Crane and Mathieu Rochette of Compass represented the sellers, while Samantha Curry of Douglas Elliman represented the buyer; Curry did not immediately respond to a request for comment, and Crane declined to comment on the buyer's identity.
A Record-Setting Spec Build With Room for Ten Cars
The completed mansion has seven bedrooms and seven-and-a-half bathrooms, spread across a 0.3-acre lot that includes an 8,000-square-foot sub-story. It also features a 70-foot knife-edge pool, a 14-foot seawall, and 103 feet of water frontage along a deep-water dock equipped with a 30,000-pound boat lift. Mansion Global additionally described the home as having glass curtain walls, a three-tiered green roof and a subterranean 10-car garage, along with a summer kitchen.
The sale included the home's furniture, and per Mansion Global, the interiors were designed by Varabyeu Partners, Javier Robles Studio and Artefacto. The sellers reportedly drew a lot of interest in the house during August and September before the deal closed. The Real Deal and Mansion Global both describe the sale as a record for the Venetian Islands and San Marco, with Mansion Global noting it surpassed a previous mark set by a $46 million sale on San Marino in 2025.
San Marco's Overlooked Status Could Be Changing
San Marco sits within the city of Miami and, according to Crane, offers many homes with wide-open bay views. Crane told The Real Deal that Miami's building codes allow more lot coverage than those in Miami Beach, which results in homes that are proportionally larger relative to their lot sizes. He said San Marco has historically trailed the Venetian Islands in Miami Beach in prestige, but is now poised for a large value increase, adding that buyers relocating from elsewhere tend to be less sensitive to that kind of local hierarchy than longtime residents.
The record sale arrives amid a broader scramble for land and teardown properties along Miami's waterways. The same week the deal was reported, two waterfront teardowns traded for more than $50 million combined, while a separate waterfront mansion on Palm Island in Miami Beach sold for $29 million, with its deed recorded that same week. The activity suggests buyers and developers are once again eyeing land purchases in the area, per The Real Deal's reporting.
Part of a Broader Ultra-Luxury Surge
The San Marco sale lands amid a historic run for Miami-Dade's priciest homes. Twenty-nine single-family homes sold for $30 million or more across the county in 2025, more than doubling the previous record of 15 such sales in 2024, according to the Miami Herald. By July 30 of this year, 21 more homes had already crossed that threshold, as overall Miami-Dade real estate spending hit $13.7 billion in the first half of 2026 — up 19 percent from a year earlier and more than double pre-pandemic levels.
Much of that demand is colliding with a shrinking supply of waterfront inventory. The Herald reports that single-family home inventory across the county remains 30 percent below pre-pandemic levels, with waterfront properties in Miami and Miami Beach described as especially scarce and likely to keep climbing in price. Other recent deals underscore the trend: a waterfront property at 845 East Dilido Drive in Miami Beach sold for $35 million in May, working out to more than $5,700 per square foot, while a Hibiscus Island estate fetched $51.5 million in August, setting records for both price and price per square foot on Miami Beach's Hibiscus and Palm islands, according to Profile Miami.
Even those figures pale next to the county's biggest deals. Mark Zuckerberg reportedly paid $170 million for a mansion in Indian Creek Village earlier this year, the current record for a Miami-Dade home sale, per the Herald. Citadel CEO Ken Griffin's $107 million purchase of the Adrienne Arsht Estate in Coconut Grove in 2022 was the first Miami-Dade home sale to top $100 million. The New York Times has also reported that Miami sold more ultraluxury homes than any other U.S. market in 2025, even as the rest of the city's housing market stagnated, with Miami's median home price falling to $610,000 in January, down 7.2 percent year over year.
