The development of the Episcopal Church in this part of Connecticut began with the conversation of the the reverend Solomon Palmer, the pastor of the Congregational Church in Cornwall. He became an Episcopalian, went Founded in 1760 as a mission of the Church of England, St. Andrews's first church was built in 1765 in New Preston.  A second church, located adjacent tot he Northville cemetery, was used from 1793 until the present church building in Marble Dale was completed in 1822.  The 1822 church is one of the earliest Gothic Revival structures in the New England, predating the stylistic trend by some 20 years.  All materials used were local products: chestnut timbers from Aspectuck sawmills; marble from Marble Dale's quarries cut in a nearby Aspetuck stone mill, brick from a nearby kiln.

The initial building has been added time. Nathaniel Wheaton, grandson of Joseph Wheaton, the first settler of Marble Dale and founding memder of St. Andrew's, was ordained and became the first president of Trinity College. He retired to Marble Dale where he perchased and occupied the Rectroy and directed the addition of the church's transept and chancel in the 1850s.  The origonal Nave windows, parts of which were saved, were replaced with stained glass windows made by Tiffany in the 1880's.

More recently the present parish hall was added in 1963, replacing the Grange building which had been relocated adjacent to the church but which shortly thereafter in 1962 was destroyed by a fire. The Parlor was added in 1974. In the 1990's the church was threatened with possible demolition due to structural problems, but the dedication of the parishoners and broad community support permitted the resolution of these problems and a complete  restoration of the church was carried out in 1994 and 1995.

Saint Andrew's Church is the second oldest church building in the Town of Washington and it is listed in the National Registor of Historical Buildings.