The exterior walls are of rusticated ashlar masonry of gray limestone, laid 18 inches (46 cm) thick, with contrasting smooth-faced stone around doors, windows, and other accents; the tower and nave are roofed in slate.

[2]: 7 The main facade is on the west, with the entry narthex in the base of the tower at the northwest corner, featuring wood-paneled glass doors set in a Gothic arch doorway.

A gabled segment projecting forward from the wall, housing the baptistry, features a triple lancet stained glass window.

The projection is flanked by another lancet window on either side in the main wall, and above it is a louvered double-lancet opening to ventilate the attic.

The original portion of the sanctuary building is one story high, but the 1939 expansion extended the chancel to the east to include a second level below, accommodated by the downward slope of the land.

The altar rail, bishop's chair and baptismal font are all gifts from the Church of the Epiphany in Philadelphia, where Kinsolving was rector before coming to Texas.