First Castlederg Presbyterian Church, Garvetagh Road, Castlederg, Co Tyrone, BT81 7QA

First Castlederg Presbyterian Church is a Gothic Revival church built around 1895, situated on the east side of Garvetagh Road. The building demonstrates the denominational confidence and architectural ambition of late 19th-century Presbyterian practice in Ulster.

The church comprises a rectangular nave with gabled transepts to the north and south, an engaged square tower to the north-west, a cat-slide roof over a store to the south-west, and a single-storey minister's room to the east. The roof is pitched natural slate with terracotta ridge tiles over corbelled eaves course; the raised painted masonry verge on the principal gable features moulded kneelers with a terracotta finial. The minister's room has a hipped roof over roughcast corbelled eaves. Walls are painted roughcast over a projecting plinth with smooth rendered coping and diagonal buttressing to the corners.

The principal elevation faces west and is dominated by a central gable containing a pointed-arched-headed rebated opening in a stepped surround, surmounted by a hood mould with label-stops. This opening contains square-headed double-leaf vertically-sheeted timber entrance doors with a stained glass fanlight. The gable is flanked by single windows on either side. At gallery level, a moulded sill course leads to a large pointed-arched-headed geometric tracery window, surmounted by a hood mould with decorative label-stops. A small pointed-arched-headed louvred opening pierces the apex. Lateral buttressing supports the corners.

To the right of the principal elevation stands a store containing a single trefoil window in a smooth painted surround. To the left, a two-stage square tower rises; the first stage contains a single window to each elevation, whilst the second stage has a moulded string course and a broached profile containing trefoil oculi to the cardinal points. A moulded string course supports a crenellated parapet, with a squat octagonal spire behind. Windows throughout are pointed-arched-headed in chamfered stepped painted sandstone surrounds, containing leaded stained glass.

The north elevation spans three windows across the nave, separated by buttresses. A gabled transept projects at the left, containing a group of three pointed-arched windows with a larger window to the centre. The tower abuts at the right.

The west elevation is abutted by the minister's room; the exposed section at gallery level contains an oculus window surmounted by a small pointed-arched-headed louvred opening. The minister's room has three windows overall. Its north elevation contains a chamfered Tudor-arched-headed entrance opening with a diagonally-sheeted timber door at the right and a single window at the left. The south elevation contains a single window.

The south elevation is four windows wide, separated by buttresses, and abutted at the right by a gabled transept detailed as the north elevation.

The churchyard is modern, with a carpark to the south. The site boundary at the north and south-west is marked by roughcast walling, with access through a pair of square pillars supporting modern steel gates. The front of the church is bounded by a roughcast plinth wall surmounted by cast-iron railings, with access through cast-iron pillars supporting a pair of cast-iron gates. The south boundary is formed of rubble walling and the east by hedging. A single-storey pitched roughcast outbuilding stands to the north-east.

The church hall and original meeting house, dated 1739, stand on the west side of Garvetagh Road. Cast-iron ogee profile gutters and round downpipes are recent replacements.