Manhattan, NY Premier condominium tower 389 E. 89, a 33-story residential offering on the Upper East Side, was the neighborhood’s top selling new development project in the first half of this year, according to Corcoran Sunshine Marketing Group. Selling 15 residences within the first six months of the year, including a three-bedroom penthouse for $4.8 million, 389 E. 89 is now 90% sold.