The house was designed by Architect Frederick W. Cumberland
in the Greek Revival style of architecture.
The front portion of the house is almost square in plan, hip-roofed
and crowned by four pairs of ornate octagonal chimneys. It is a solid brick building with fieldstone
foundation walls and a full basement. The interior bearing walls throughout the house are constructed of red brick made in Simcoe. The outside front is symmetrical about a two-panelled front entrance door with adjacent sidelights and transom
. All are protected by an imposing sandstone portico
. The fluted Ionic columns
, used in pairs to support the entablature
, set the design motif for the building. The portico was originally enclosed by a winter vestibule
built of wood which was removed in 1974. It has been stored for possible reconstruction.
A pair of double hung windows with semi-circular heads in a rectangular frame is centred above the main entrance. One double hung window flanks each side of the central entrance at the ground and second floor levels, dividing the façade into three distinct bays. All windows are divided into 12 panes of glass – 6 x 6. Sills are made of sandstone. The dentil
motif used on the portico cornice, in stone, is repeated, in wood, in the cornice detail of the main roof.
The north and south sides are also divided into three bays with double hung windows and/or French doors filling the openings. On each floor, a pair of fixed shutters indicates the location of a blind window. This device was often used in the 19th century to maintain the overall symmetrical exterior design of the building, while at the same time, accommodating the interior plan requirements.
In the front entrance hall ornamental plaster work has been used generously on the ceiling for cornice and medallions. All door, window and baseboard trim throughout the house is intricate in design and was probably made of chestnut. The front and rear portions of the front hall are separated by an elegant archway, supported by the same fluted Ionic columns as found outside. The circular staircase to the upper floor is lit by a large round-headed stained glass window flanked by two wall niches. The four seasons are depicted in the window.
The door and fireplace mantel detailing varies greatly between the upper and lower floors. The fireplaces in the upstairs bedrooms, in particular, harkens back to earlier tastes when wood was used in a more delicate and intricate manner. This contrasts noticeably with the simpler, bolder lines found in the parlour mantels downstairs. One wonders if perhaps these two mantels came from Campbell's original octagonal frame house which stood nearby.
The kitchen wing is generally rectangular in shape with a gable roof. Originally only one gabled wing extended from the south wall, however, late in the century a major addition was built at the south-east corner of the wing creating the present second gabled projection. All the eaves
are decorated with wooden fretwork
and droplets and the peak of each gabled roof is crowned by a slender turned finial
The original north and south porches were built with awning-type roofs supported on intricate wood latticework
. Both porches deteriorated with time and weather and were replaced. The south porch was built in the 1930s – the present north porch was reconstructed in 1975 following the original 1851 design