St. Mary's RC Church, 35 Fireagh Road, Omagh, Co Tyrone, BT78 1SG

St. Mary's Roman Catholic Church is a detached building located on the west side of Fireagh Road in Omagh. The church was rebuilt and dated 1844 on the site of an earlier church from 1764.

The building is arranged in a T-plan with a nave and transept. The principal elevation faces east and is symmetrical, containing a gothic door opening at each end with replacement timber sheeted doors and interlacing gothic tracery fanlights over. Four windows occupy the centre of this elevation, arranged as two central windows flanking the altar area and two outer windows. The central windows originally had high sills and have been altered to match the outer windows. All windows are gothic with multi-pane timber sash windows incorporating interlacing gothic tracery fanlights and coloured glass, set within chamfered sandstone surrounds with projecting masonry cills.

The walls are finished in smooth lime render, with stepped sandstone quoins visible on the east elevation only. Roofs are pitched with natural slate and terracotta clay ridge tiles, with stone verges supported on stone kneelers. Cast-iron ogee profile rainwater goods are supported on square cast-iron brackets and a corbelled eaves course.

The south gable of the nave contains a central window and a datestone reading "THIS WAS BUILT BY THE ORDERS OF THE REV.D.TERENCE McCAVIE IN THE YEAR 1764", with a stone carved cross finial to the apex. The north gable is detailed similarly. The west elevation is abutted at its centre by a transept, also dated 1844 and detailed as the main block, with exposed blank sections.

A further datestone on the transept south elevation reads "ST MARYS CHURCH DRUMRAGH/ Erected 1764/ by Reverend Terence McCawill P.P./ Reconstructed 1844/ by Reverend Edward McBride. P.P./ Renovated 1964 by Monsignor Patrick McDowell. P.P."

The north elevation is abutted at its centre by a single-storey confessional room, now used as a store, with a pitched roof. The transept south elevation is abutted at its left by a single-storey extension dated 2005. A south single-storey extension, also dated 2005, contains modern finishes and is accessed from its south side; it has a pitched roof to the west and a flat roof to the east, with cement tiles and red clay ridge tiles, part smooth rendered and part timber clad walls, and double-glazed timber casement windows. A north single-storey extension is detailed as the main block with a pitched natural slate roof and terracotta clay ridge tiles. A sacristy in modern extension abuts the south elevation of the west transept. A porch to the north is now used as a store.

The church is set in a roadside location with the graveyard to the east. The site is bound at the gables by modern steel gates. A car park on the east of Fireagh Road is accessed through two set back entrances consisting of square piers with pyramidal coping supporting pairs of replacement cast-metal gates.