The Blackstone Group LP is planning to sell its Greater Boston office asset at Riverside Center in Newton. The property is a 510,000-square-foot, Class A office property at 275 Grove St. Blackstone has hired Holliday Fenoglio Fowler, L.P. (HFF) to market the property.

Banker & Tradesman reported that HFF was unavailable to comment but the property is reportedly valued up to $180 million, according to one market source who asked for anonymity due to a conflict of interest.