Scaling a Google Map is always an approximation. For permit sets, grading plans, or legal descriptions, you must trace the map with CAD geometry (polylines, arcs, lines) and then scale the vector geometry , not the raster image. The raster remains as a visual reference only.
If Google Maps shows 500 feet but your drawing is in meters, convert first. AutoCAD does not auto-convert. Use UNITS command to check your drawing’s insertion scale or simply multiply: 500 ft = 152.4 m. how to scale google map in autocad
The image should now be scaled correctly. Scaling a Google Map is always an approximation