SketchUp Free (formerly called my.SketchUp / SketchUp Make) is a free version of SketchUp that runs in a web browser. You'll find a simple interface where you can simply draw and create 3D models. Our goal is to enable you to create anything you can imagine in 3D. And with SketchUp Free, 3D modeling is more accessible and easier to try than ever before!
View Comparison Matrix of the differences between SketchUp Free and SketchUp Pro 2018.
Risking your reputation and that of your practice is just not worth the few bucks that you think you are saving by using SketchUp Free to produce documentation for Commercial Projects.
SketchUp Pro 2018 is the appropriate application to implement within your practice for this purpose.