Marty Burger's L&L Infinite Debuts With 600 Third Ave Buy
The former Silverstein CEO spent months building a new platform with L&L's David Levinson. The Midtown East tower is the first bet, and the evidence it can find deals.
Marty Burger ran Silverstein Properties for 14 years before stepping away to build his own platform. That platform, L&L Infinite, just made its first move: a $245 million purchase of 600 Third Avenue, the 42-story Midtown East office tower BlackRock has held for roughly two decades. Burger co-founded the venture with David Levinson, CEO of L&L Holding, and launched it in January 2026 to hunt distressed and transitional assets in New York and Florida. This is the bet that says the strategy works.
Why it matters
A platform is only as real as its first closing. Burger spent a year assembling capital and a partner network before ever naming a target, and 600 Third Avenue is the proof he can source, underwrite and close a deal at scale outside Silverstein’s balance sheet. The building is 92% leased, between East 39th and East 40th streets, which makes it a stabilized asset rather than a turnaround play, a signal that L&L Infinite’s opening move is about credibility as much as returns.
The numbers
BlackRock sold 600 Third Avenue for $245 million after holding the roughly 575,000-square-foot tower for close to 20 years, an exit built to recycle capital rather than a distressed sale. L&L Infinite’s buying group includes Richard Born, whose BD Hotels affiliate BD Blakely took a stake, along with Richard Mack’s Mack Real Estate Group and BLDG. Bain Capital provided the acquisition loan. Tenants in the 1970-built tower include Polsinelli and 3G Capital.
What’s next
L&L Infinite’s mandate points at more deals like this one: stabilized or transitional office and multifamily assets in New York and Florida, bought from sellers looking to recycle capital rather than out of distress. Burger and Levinson now have a live asset to lease up and a closed deal to show the next seller and the next capital partner. Whether the platform becomes a repeat buyer or a one-off will show up in how fast the next acquisition follows this one.