Construction of the current stone church began in 1894 and completed in 1895. Stone from a quarry at Limebank Road, due east from Manotick provided the stone for the Trinity United Church. The stone went by land to Manotick then by water to Kars and by land again to the site. The building features elements of the Gothic Revival architectural style popular in Canada in the late-nineteenth and early-twentieth centuries.
Originally known as the Wellington Methodist Church it became Trinity United Church in 1925. Designed by Architect, Mr. McCartney and built by Joseph Johnson, The Rideau Township Local Architectural Conservation Advisory Committee (LACAC) designated Trinity United Church as a heritage building on May 22, 1982.