They were designed and built by stonemason Andrew Petrie of Toowong in 1920. The bell and belltower were erected in 1953. St Agnes rectory and church, located with a hall, belltower and grounds containing a number of mature trees, form an Anglican Church group which, along with the Presbyterian, Uniting and Catholic Church groups, is situated on Ipswich Street, the main road into Esk.  St Agnes church is a weatherboard building with a steeply pitched ribbed metal gable roof with deep timber brackets to the eaves. The building has a rectangular plan set on a later brick base, with a vestry added to the east and a porch to the north west. The entry porch has a gable roof with weatherboard balustrade and gable. The entry and vestry doors have convex quarter circles at the top corners. The building features lancet windows, most of which contain leadlight glazing except in the sanctuary which features stained glass. The building has a scissor trussed roof with boarded ceiling and vertical tongue and groove boards to the walls of the nave. The sanctuary has horizontal boards to the walls and the interior surfaces have been painted. A timber screen separates the sanctuary from the nave. This screen has a tongue and groove balustrade and decorative timber brackets forming a pointed arch in the centre. A timber cross is supported above the centre and a pulpit is built into the western end of the nave. The internal faces of the doors have decorative diagonal boarding at close centres. The floor of the sanctuary and altar are raised above the nave and vestry, and at cornice level there are spaced ventilation boards. The altar and altar rail are of stained carved timber and the building contains original pews, a stone baptismal font and memorial plaques. A 1953 timber-frame belltower with a corrugated iron pitched roof is located to the north east of the church. Entry to the site is via memorial gates which consist of three sandstone gateposts with decorative metal gates. The posts are square in plan with pyramid capitals, rock finish faces with dressed corners and base and a marble plaque and name badge on the two centre posts. The grounds include a number of notable mature trees. St Agnes rectory is a single-storeyed weatherboard building with a corrugated iron hipped gable roof. It has timber stumps, with verandahs on the north and east sides. The street entrance porch has a projecting gable to the verandah with decorative timber truss, finial and barge boards.