West Tarr is a vaulted first-floor hall and tower house, likened to Irish early modern towerhouses. Of uncertain date, it is a very small house with a vaulted roof and undercroft, although sections of this undercroft have been destroyed during alterations. Built of limestone rubble with a slate roof, the main room measures 4m x 3m. The original entrances are now blocked. The original fireplace was knocked through to create an external doorway during an unknown period of alteration.

Portrayed as part of a group of structures on OS County series (1890). A similar structure stands at Carswell, 0.8km to the east (Nprn21716).

Sources:
CADW listed buildings database)
Os495card; SN00SE23
RCAHMW AP955106/4

J.Wiles 29.04.02
J Hill 25.09.2003