Key Takeaways SL Green will buy 346 Madison Avenue and a site at 11 East 44th Street for $160 million.The combined properties could deliver 800,000 rentable square feet under rezoning.SLG targets tenant demand for new builds with amenities and transit access.SL Green (SLG) recently entered into a contract to acquire 346 Madison Avenue, along with the adjacent site at 11 East 44th Street, for$160 million. Subject to customary closing conditions, the deal is expected to close in the fourth quarter of this ye ...