York House (Part of Stella Maris School)

York House, part of Stella Maris School, is a detached house likely built in the late 18th century, with alterations made in the mid 19th century and 20th-century sections added at both ends. The building features solid rendered walls and a hipped slate roof. It has a double-depth plan that is three rooms wide, with the range facing Northam Road containing the main staircase and entrance hall to the right of center, and a back staircase at the left-hand end. Passages lead to the garden from both staircases.

The house is three storeys tall, with the garden front displaying a five-window range. The first, third, and fourth windows from the left are three-storeyed canted bays. There are doorways in place of the right-hand ground-storey window and the second window from the left. The right-hand doorway is round-arched, featuring an attached Doric column and entablature, with a panelled door that has four lower panels shaped like a St Andrew's Cross and four oblong panels above, along with a patterned fanlight and panelled reveals. The bays have two-paned sashes with a single horizontal glazing bar in the ground storey, each topped with an entablature at the first-floor level. The upper-storey windows are six-paned sashes. The building has a deep bracketed eaves cornice.

On the Northam Road front, there are sashes with margin panes, as well as two round-arched stair windows that have moulded archivolts and keystones, with the former springing from a moulded stringcourse and featuring small-paned glazing. The left-hand end has raised quoins and a bracketed eaves cornice.

Inside, there is a geometrical wooden main staircase with slender turned balusters that have square necking pieces. The handrail is voluted at the foot on both sides, and the step ends are shaped. The staircase turns into an ordinary open-well from the first floor. While the rooms have been much altered, there are moulded cornices present on the ground floor.