A floor plan is fit to a foundation and points are defined at relevant locations on the floor plan. The points are defined based on the location of the point and the features associated with the point. Walls are laid out at full scale on a construction site based on the floor plan. The walls are located by defined points and with a point marker base, prism assembly, and electronic surveying equipment. The prism assembly is mounted to the point marker base, and the point marker base provides a reference point from which an offset distance to the defined point is determined. A rotatable measuring instrument is secured to the point marker base and measures the offset distance. Wall lines are located based on the defined point and annotations.