The ground floor of the main house is finished almost entirely of natural, stained redwood.
There are no painted surfaces.
The ceilings are of birch plywood nailed directly to the rafters and where used as walls, to the studs.
Cabinets of birch plywood are the only other non-redwood finishes.
The floors are of 1/2", ground, consolidated cork tiles, one foot square, with a waxed finish.
The stair treads to the second floor are white oak.
The freestanding fireplace was designed to have two openings with a one-foot deep pit on the west side.
Today the rear or second opening is unused.
The chimney breast is of steel plate, with a plaster appliquéd, in a neutral gray finish.
This surface presents an interesting texture.
The fireplace is of tan brick.
A second chimney leads from the gas furnace up through a chase behind the stairwell to the roof.

The compact, efficient kitchen utilizes white steel cabinets with grey sliding doors and clean white formica counter tops.
All are original.
An obscure glass pass-through serves both the living room and the screened porch.

The interior of the main house is remarkable in that a great deal of ingenuity was employed in the utilization of space, in the design of cabinets, the efficient arrangement of utilities and furniture, even in the location of permanent lighting fixtures.
The integrity of the interior is extremely high, with only slight changes having taken place since its construction.
For example, an interior ventilation system, based on narrow, below-window hinged wooden panels, has been permanently closed and is rarely used today, but a workable transom survives over the front door and the south plate glass windows.
The former are the only non-operable features in the house.
The ground floor of the main house is finished almost entirely of natural, stained redwood. There are no painted surfaces. The ceilings are of birch plywood nailed directly to the rafters and where used as walls, to the studs. Cabinets of birch plywood are the only other non-redwood finishes. The floors are of 1/2", ground, consolidated cork tiles, one foot square, with a waxed finish. The stair treads to the second floor are white oak. The freestanding fireplace was designed to have two openings with a one-foot deep pit on the west side. Today the rear or second opening is unused. The chimney breast is of steel plate, with a plaster appliquéd, in a neutral gray finish. This surface presents an interesting texture. The fireplace is of tan brick. A second chimney leads from the gas furnace up through a chase behind the stairwell to the roof.
The compact, efficient kitchen utilizes white steel cabinets with grey sliding doors and clean white formica counter tops. All are original. An obscure glass pass-through serves both the living room and the screened porch.
The interior of the main house is remarkable in that a great deal of ingenuity was employed in the utilization of space, in the design of cabinets, the efficient arrangement of utilities and furniture, even in the location of permanent lighting fixtures. The integrity of the interior is extremely high, with only slight changes having taken place since its construction. For example, an interior ventilation system, based on narrow, below-window hinged wooden panels, has been permanently closed and is rarely used today, but a workable transom survives over the front door and the south plate glass windows. The former are the only non-operable features in the house.
Imre and Maria Horner House