The former inspection shed is a one-story, frame building constructed on a poured concrete foundation and massed beneath a long hip-roof. The building, which measures eight-bays wide by one-bay deep and faces north, is located to the southwest of the main building, along the southern edge of the site. Original windows, present on the south, east and west facades, contain 12-over-12 double-hung sash, which are paired in the end elevations.
The interior retains its original, open plan. The floor is surfaced with asphalt paving, and walls are finished with original matched board paneling. The ceiling is finished with fiberboard insulating panels. The interior is heated by an original pipe coil radiator, and lighted with original incandescent pendant fixtures.
Alterations from the original finishes include the installation of simulated clapboard aluminum siding over original clapboards, and replacement of paneled wood garage doors with the existing green fiberglass units.