Its benefice is united with those of Llanddoged with Capel Garmon, Llansanffraid Glan Conwy, and Eglwysbach.

[6][better source needed] The project also included conservation work to Gwydir Chapel, artefacts such as the monumental brasses, stone plaques and restoration to the building fabric in general.

[citation needed] Other works included a new limestone floor with underfloor heating, new lighting scheme and sound system.

[citation needed] St Grwst's is constructed in rubble stone with limestone dressings.

[3] The plan consists of a nave and chancel in a single range, a north aisle, a south porch, the Gwydir Chapel at the southeast corner, and a west tower.

Its tracery is elaborately carved with a vine-trail rail, and depictions of such subjects as the Instruments of the Passion and pigs eating acorns.