Model codes are just that: a comprehensive model. A model code, like a product standard, is not self-existing but must be adopted by a governmental jurisdiction to become "law". However, over the years, model codes have formed either the reality or the basis for building regulatory requirements of virtually all major governmental jurisdictions.

Model codes are usually written, published and maintained by membership organizations comprised of code enforcement officials. These organizations provide a variety of other important services to their members.  

These services include but are not limited to:

• Testing and certification of building inspectors;
• Plan review, to determine compliance with the code;
• Listing services, a manner of identifying a product to the inspectors in the field;
• Compliance services, evaluating manufacturing facilities;
• Product evaluation programs;
• Code interpretations.