Sat, Sep 26, 2026

Ex-Silverstein Chief's New Venture Buys 600 Third Ave for $245M

The former Silverstein Properties CEO teamed with L&L Holding's David Levinson on a first acquisition that bets on a recovering Manhattan office leasing market.

$245MPurchase price for 600 Third Avenue
$215MBain Capital acquisition loan
92%Building occupancy at closing

Marty Burger, the former CEO of Silverstein Properties, closed the first deal for his new investment platform L&L Infinite this week, paying $245 million to buy 600 Third Avenue, a 42-story, 575,254-square-foot office tower on the west blockfront of Third Avenue between East 39th and 40th Streets in Midtown East. Burger, who ran Silverstein for 14 years, launched the venture in January with David Levinson, CEO of L&L Holding Co., to pursue distressed and transitional assets in New York and Florida. He brought in Mack Real Estate Group, BLDG Management and BD Blakely, an affiliate of Richard Born’s BD Hotels, as partners on the buy. Bain Capital supplied a $215 million acquisition loan. The seller was BlackRock, which had held the tower for close to 20 years. The tower is 92 percent leased to tenants including law firm Polsinelli, Energy Impact Partners and 3G Capital.

Why it matters

A debut acquisition sets the thesis for a new platform, and L&L Infinite picked a heavily leased, tenant-diverse Midtown East tower rather than a distressed or vacant asset. Burger has said Manhattan’s office leasing market has made a full recovery as workers return, and a 92 percent occupied building with law firm and private equity tenancy is a wager that rent growth, not vacancy risk, is the trade in this submarket now. For developers watching where institutional capital is willing to underwrite new office ownership platforms, this is a signal that Midtown East towers with strong occupancy are trading again at meaningful leverage, with Bain Capital willing to write a $215 million loan against the asset.

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The numbers

The deal priced 600 Third Avenue at roughly $426 per square foot across its 575,254 square feet. Bain Capital’s $215 million loan covers about 88 percent of the $245 million purchase price, a high leverage point for an office trade in the current cycle. BlackRock, the seller, exits a 1970-built tower whose retail base spans Dunkin’, Shake Shack, Just Salad, PureGym and Chipotle alongside its office roster. The 92 percent occupancy rate puts the building well above the citywide Midtown office average.

What’s next

L&L Infinite’s next moves will test whether this debut buy was a one-off opportunistic pickup or the start of a broader Midtown acquisition program for the Burger-Levinson venture. Watch for whether the partnership pursues additional New York office towers with similar occupancy profiles, and whether Bain Capital or other lenders follow with financing for L&L Infinite’s next deal.

Quick answers

Who bought 600 Third Ave in New York, and for how much?
Marty Burger's new platform L&L Infinite closed its debut deal, buying a 575,254-square-foot Midtown East tower for $245M with a $215M Bain Capital loan.
Who is developing 600 Third Avenue?
L&L Infinite, L&L Holding Co. and Mack Real Estate Group, according to Propmodo.
What are the key numbers for 600 Third Avenue?
Purchase price for 600 Third Avenue: $245M; Bain Capital acquisition loan: $215M; Building occupancy at closing: 92%.

On the record

The seller was BlackRock, and the 1970-built tower's retail base includes Dunkin', Shake Shack, Just Salad, PureGym and Chipotle, none of which appeared in the initial trade coverage of the deal.

Public record · commercialsearch.com

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