Government entities are free to use all InterNACHI documents.

Irrevocable Non-Exclusive License for Use of InterNACHI Standards of Practice,
Code of Ethics, and Certain Other Materials by Government Entities
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The International Association of Certified Home Inspectors (InterNACHI) hereby grants this irrevocable, non-exclusive, royalty-free license to any federal, state or local government located in the United States or Canada, and any agencies thereof, including licensing boards, to use InterNACHI's Standards of Practice, Code of Ethics, and any other materials found on the InterNACHI website (www.nachi.org) free of charge, without the need for pre-approval, provided that each use is clearly attributed to InterNACHI. 

InterNACHI specifically authorizes any government or government agency to use and copy, for any public purpose, InterNACHI's Standards of Practice, Code of Ethics, and other materials without further approval from InterNACHI, even if the materials are protected by copyright or other laws.

Nothing in this license shall preclude InterNACHI from modifying its Standards of Practice, Code of Ethics, or other materials.