A young family of believers in Fairfield established the parish of Our Lady of Mount Carmel on September 1,1979. Fr. John Hertel and Fr. Joel Moelter, both of the Order of Carmelites, led the new flock with only a four bedroom parish house and an empty eight-acre corner lot.

The fledging parish celebrated its first Mass at the Fairfield Presbyterian Church on Saturday, September 8,1979. Sunday Masses were celebrated at Amy Blanc Elementary School and weekday Mass was celebrated in the garage of the Priory. As the community grew Masses moved to the Fairfield High School gym where the faithful climbed the bleachers to worship.

Religious Education classes and other parish activities met in homes, int the back yard of the Priory, or in a local park. Following Fr. John, Carmelites Fr.Phillip Nessinger and Fr. Kevin McBrien led the flourishing parish.

A new Parish Center—with a golden geodesic dome—was dedicated on October 9, 1983. As the parish grew to 1,500 families, Pastor Fr. Sebastian and his parishioners began planning a new sanctuary. Inspired by the theme "Out of the Dome, Into the Church," they dedicated the new church on December 8, 2003 with Bishop William Weigand presiding.

Stations of the Cross, carved by parishoner James Davis, were set up prominently in the new church and provide a link from past to present.

 Father David Fontaine joined Our Lady of Mount Carmel previously from 1987 to 1993, returning in 2004 and became pastor after Fr. Sebastian Meyer passed away June 24, 2009. Fr. David Fontaine retired in 2020, with Fr. Patrick Gavin becoming pastor ​during the summer of 2020.

Our Lady of Mount Carmel supports a variety of activities for all ages in the parish. They reach out with material and spiritual support to the communities of Fairfield and Suisun City.
 

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Our Lady of Mount Carmel Parish community is administered by the Carmelites and guided by the Bishop of the Diocese of Sacramento.

Our mission is to create the opportunities and atmosphere for meaningful worship, sound teaching, spiritual growth, faith formation, and an active witnessing of the Gospel to surrounding areas.

In the spirit of Christian hospitality and friendship, we follow the mandate of Christ to reach out to others especially in their time of need.

We encourage lay participation and actively respond to the changing needs and demands of our time. May God give us the grace to fulfill this mission to the best of our abilities.