- Building type: Church Ruin
- Date of construction: Pre-1305
- Architect: Not Assigned
- Listing: MON
- HB/SMR Ref: LDY003:003
- 2nd Survey by EHS: No


Agherton Old Church, Portstewart
County Londonderry

Simple rectangular church ruin, main face appears to be South with remains of a doorway and 2 rounded arch windows. One gap in wall of the North face. Approximately half of East face remains, stones loose and ready to fall
Stone Type Category: | Basalt |
Primary Stone Type: | Basalt |
Secondary Stone Type: | Ballycastle Sandstone |
Other Stone Type: | |
Replacement Stone Type: | |
Stonework Construction: | Rough-coursed rubble |
Stonework Condition: | Primary stone is in good condition with no significant evidence of deterioration. Sandstone shows some evidence of surface loss primarily through granular disintegration and bedding-plane erosion |
Condition Assessment (QUB): | 1 |