Wernllwyd, Berriew, was built in several phases: the earliest part of the building is the timber framed rear wing, which may be late 16th century and has high quality interior timberwork: the north bay of the main range which adjoins this was probably added in the 17th century, while the south bay and the staircase wing are probably late 18th century. The main elevation of the main range forms a single build, and is therefore probably a refronting: the fenestration and some of the detail seem to be of c. 1900 (there is a date of 1903 on an adjacent wash house). This main elevation has attic dormers which have glazed cheeks and an open porch with chambered timber posts.

Reference: Cadw listed buildings database.