Ravenous Broadway Partners Gobbles Two More Monsters

The relentless real-estate investment firm is in contract to purchase another national portfolio from Beacon Capital Partners, which includes two Manhattan prizes, a source familiar with the deal said. The sale price for the portfolio is expected to be close to $5 billion.

The Partners’ newest city assets are the Park Avenue Atrium and 100 Wall Street.

The Park Avenue Atrium, at 237 Park Avenue, is at the corner of Lexington Avenue, between 45th and 46th streets. It is across the street from the MetLife Building and a few blocks from the Partners’ other treasured asset, 340 Madison Avenue.

The Atrium is 1.1 million square feet, and its main tenants include Bear Stearns and J Walter Thompson. As The Observer reported first, Bear Stearns recentlyexpanded to more than 250,000 square feet in the building.

Broadway Partners, led by Mr. Lawlor, the C.E.O., will take over the 90 percent stake that Beacon had at 237 Park, a second source said. Monday Properties will remain as the minority owner at the building.

Meanwhile, the Partners’ other new city tower is at 100 Wall Street. The 29-story, 458,000-square-foot building is at the corner of Water Street. It was purchased by Beacon in 2005 for $134 million, and its tenants include the GFI Group, Harris Beach and Bollinger Insurance.

For Broadway Partners, this will be the second portfolio the company has purchased from Beacon in less than six months. The first portfolio sold for reportedly more than $3.3 billion and included the John Hancock building in Boston.

The San Francisco