WillAdams writes: From the license for the new SketchUp Make (which replaces Google's free version and complements the paid version) Trimble Navigation Limited
... gives you a ... license to use the ... Software for non-commercial use only. Non-commercial use means: you may not sell, rent, lease or lend the output of the Software or the Services. If you are ... engaged in commercial activity; therefore, in order to use the Software and Services, you must purchase a SketchUp Pro license. In addition to the basic $495 licensing fee, one must pay an annual $95 fee for maintenance & support.