The two-storey sandstone Victorian Gothic style building has a high pitched eternity slate roof with stone gables.

The north eastern facade has a single storey timber verandah on a sandstone columned under croft and would originally have had views of Rushcutters Bay.

A later two-storey extension to the south east is built in rendered masonry with coursing lines and a castellated parapet and flat roof.

Kenilworth remained in the hands of its original family until 1944 when it was sold after the death of Henry Williams youngest daughter, Ethel,[5] and her husband Arthur H.

Since that time the upper two levels of the interior have remained relatively intact with original timber detailing but the basement has been altered and refurbished for its role as hospital and aged care offices.