Marty Burger’s New York Comeback Starts at 600 Third Avenue
There are easier ways to announce that you are back in the New York real estate game!
Marty Burger chose a 42-story Midtown office tower.
L&L Infinite, the new real estate venture Burger launched with L&L Holding’s David Levinson, has made its first acquisition: 600 Third Avenue, a 575,000-square-foot office building in Midtown East, in a transaction valued at $245 million. The new ownership group includes affiliates of Mack Real Estate Group, BLDG and BD Blakely.
It is a debut that is very Marty Burger.
Burger is not exactly a newcomer looking for his first New York deal. He spent 14 years as CEO of Silverstein Properties, after 15 years at Related, and has been involved in some of the city’s most recognizable developments, including the World Trade Center redevelopment, Time Warner Center and 30 Park Place.
Now he has a new platform.
And apparently he intends to move quickly.
A Familiar Building, a New Capital Structure
There is a particularly New York twist to the 600 Third Avenue transaction.
L&L Holding has had a stake in the property for decades. The building’s previous ownership structure included BlackRock, which held approximately 99.5 percent of the property for roughly two decades, while L&L retained a small interest. The new transaction replaces that structure with L&L Infinite and its new investment partners.
So this is not simply an outsider buying an office building.
It is a new investment platform taking over an asset with which one of its principals already has a long history.
That makes 600 Third Avenue both an acquisition and something of a statement.
The statement is that Burger and Levinson believe there is still considerable opportunity in New York office real estate — particularly in buildings where the existing fundamentals provide a foundation for further value creation.
600 Third Avenue was approximately 92 percent leased when the transaction closed, with tenants including L-3 Communications, Polsinelli and Aaronson Rappaport Feinstein & Deutsch.
That is hardly a blank canvas.
And that may be precisely the point.
Meet L&L Infinite
L&L Infinite was launched in 2026 by Burger and Levinson as a platform focused on development, investment opportunities and debt strategies across the United States, with particular activity planned in New York and South Florida.
Burger serves as co-founder, CEO and president. Levinson is chairman.
The combination is an interesting one.
Burger brings nearly four decades of experience across some of the biggest names and projects in American real estate. Before Silverstein, he held senior positions at Related and worked at Blackstone and Goldman Sachs’ Whitehall real estate funds.
Levinson brings the L&L platform and a long history of New York development.
Together, they are building something that is neither quite a traditional developer nor simply another private-equity real estate fund.
L&L Infinite describes its strategy as pursuing ground-up development, conversions, acquisitions and debt strategies, with an emphasis on situations where flexibility, alignment and certainty of execution matter.
600 Third Avenue is the first test of that thesis.
The Interesting Part Is What Comes Next
The real significance of the 600 Third Avenue deal may not be the building itself.
It may be the capital platform being assembled around it.
L&L Infinite did not simply acquire the property alone. It brought in affiliates of Mack Real Estate Group, BLDG and BD Blakely as partners. Hotel investor Richard Born is among the investors through BD Blakely.
That is an old New York real estate formula with a modern twist: find an asset, assemble experienced operators and capital partners, and create a structure that can move quickly when the right opportunity appears.
And there is plenty of reason to think 600 Third Avenue is intended as the beginning rather than the conclusion.
L&L Infinite launched specifically to pursue opportunities in New York and Florida, including office, residential and mixed-use assets. Its debt platform, Infinite Global Capital Partners, provides another source of capital-market capabilities.
So the first deal tells us something about the ambitions of the platform.
They are not starting small.
Welcome Back, Marty
Burger has spent much of his career working on enormous, complicated projects.
Now he has a new company, a new partner, a new capital base and a Midtown office tower.
The building is familiar.
The ownership isn’t.
And that may be the most interesting thing about 600 Third Avenue.
For Marty Burger, this isn’t really a return to New York real estate.
He never really left.
This is the beginning of the next version.
And 600 Third Avenue just happens to be the first building with the new name on the spreadsheet.
