A seller does not have to provide the addendum in the following situations:
1. Property constructed after January 1, 1978
2. Property sold at foreclosure
3. A dwelling where the living area is not separated from the sleeping area (such as efficiency apartments, dormitory housing, or individual rooms)
4. Housing for elderly or disabled residents where no child under six years old is expected to reside.
There are also exceptions for rental properties, which you can read about in the legal FAQs on texasrealestate.com.