Trehale is a small country house, a later 19th century remodelling of an earlier house with service wing said to have been built in 1844-5 for the Rev T E Thomas (1802-74). It is white painted stucco with imitation slate roofs and rendered end stacks. Raised quoins. Two-and-a-half storeys, the upper windows breaking the eaves under small later 19th century gables with bargeboards and terracotta finials. There is a central 2-column porch and a parallel rear range with a half-hipped gable.

Reference: Cadw listed buildings database.