[2] The early beginnings of the Greenwood Union Church can be traced through historical records to the mid-1850s when the Sunday School was organized under the leadership of Henry Degan.

After the First Congregational Society of Greenwood was organized in 1873, the members immediately began planning for a building of their own.

Extensive remodeling and another addition, which extended the building 22 ft (6.7 m) closer to Oak Street, began in 1920.

In 1944, a Parish House Fund was established which resulted in the purchase of the neighboring Willard Eaton property in 1952.

In January 1956, the church secured the corner lot at Oak and Main Street for further expansion, and the cornerstone of the new building was laid on September 25, 1960.