At a 10 a.m. auction, Unity House moved from the $1.8 million upset price in rapid bidding against one other potential buyer, identified as Hawaii Holdings.

Unity House was set up in the early 1950s by the late union leader Art Rutledge for Teamsters and hotel workers to provide benefits and services such as child care, disaster assistance and other help to union members outside the traditional wage and benefit plans.

A Unity House spokesman said that the estate might be used for an administrative center and to provide services to retirees, but no final decision had been made. A spokesman said Unity House wants to be a good neighbor in the exclusive residential area.