Observations: Those potential items of interest noted by the inspector during the walk-through survey portion of the inspection.

Observe: To visually notice.

Obvious: A condition or fact not likely to be ignored or overlooked.

Occupancy Load: The number of people permitted in a building or space based on the means of egress.

Occupant: Any individual living in, sleeping in, or having possession of a space within a building.

Oil-Canning: A term that describes the distortion of thin-gauge metal panels that are fastened in a manner that restricts normal thermal movement.

Operate: To cause systems to function or turn on with normal operating controls.

Operational: Systems or components capable of being safely operated.

Oral Consultation: A limited visual inspection of specific systems, structures or components of a building where no written report is prepared by the inspector, and the inspector’s findings, opinions, conclusions and recommendations are orally communicated by the inspector to the client.

Orphan: A term used to describe one or more appliances remaining on a flue after others are removed.

OSHA: Occupational Safety and Health Administration

Outdoor Structure: A freestanding or attached structure, such as a deck, porch, balcony, or terrace, that provides occupants or guests with an exterior space designed for its intended use.

Owner: Any person, agent, operator, firm or corporation having a legal or equitable interest in a property.