1. A computer aided design (CAD) modeling method comprising: obtaining an augmented reality view of a facility, the facility having various objects displayed in the obtained augmented reality view, the various displayed objects having interactive capability in the obtained augmented reality view; in response to user selection of a particular facility object of one of the facility objects as displayed in the obtained augmented reality view of the facility, searching a CAD database for a CAD model of the one object having metadata matching metadata of the particular facility object, the CAD database storing a CAD model of the facility from a CAD modeling system, and said searching resulting in obtaining the CAD model of the facility that contains the corresponding CAD model of the one object; displaying a CAD model view of the one facility object overlaying on the augmented reality view of the one facility object in a mashed-up and aligned manner such that the CAD model view of the one facility object is displayed contemporaneously and contiguously to the obtained augmented reality view of the facility; and enabling user interaction with the displayed CAD model view of the one facility object to update the CAD model of the facility in the CAD modeling system.