1. A method of providing coordinate geometry augmented reality for visualizing a 3D digital model in a real environment, the method comprising: surveying the real environment with a physical structure, with targets positioned at control points on or around the physical structure, to determine coordinates of the control points in relation to a real-world coordinate system; scanning, with a 3D laser scanner, the physical structure and the targets positioned at the control points in the real environment to generate point cloud data having a number of scan points associated with the physical structure, wherein each scan point is georeferenceable on the real-world coordinate system based on the determined coordinates of the targets positioned at the control points; generating a physical structure digital model based on the point cloud data and the determined coordinates of the targets at the control points wherein the physical structure digital model is embedded with coordinate data in relation to the real-world coordinate system; incorporating a digital model representing an unbuilt element into the physical structure digital model at a desired tie-in location, thereby embedding the supplemental digital model with the coordinate data in relation to the real-world coordinate system; selecting at least a portion of the digital model of the unbuilt element to be used as a supplemental digital model for rendering augmented reality visualization; selecting a marker location in relation to the supplemental digital model and extracting coordinates associated with the marker location; associating the supplemental digital model with a selected digital marker at the marker location so that the supplemental digital model is configured to be sized, positioned, and oriented with respect to the digital marker according to relation data; storing a data file comprising the supplemental digital model and the relation data in data storage, wherein the data file is retrievable from the data storage when a physical marker, which corresponds to the selected digital marker, is detected in the real environment by a mobile device; and surveying the real environment to determine the extracted coordinates of the marker location in the real environment.