Do I Disclose This?
There is no way for me to predetermine what should or should not be disclosed to a prospective buyer. A good rule is the golden rule. Would you want to know it if you were buying that property?
Of course, there are times when you simply must disclose something like when it is required by the Sellers Disclosure Notice and the Tex. Prop. Code Section 5.008.
However, there are lots of things that are not on the Sellers Disclosure Notice that should still be disclosed. For instance, if you as the seller are aware that a new highway system is being built behind your house, you have received a letter from TexDOT and there were meetings held in your neighborhood, you should definitely disclose it. But what if your neighbor wants to build something and it may obstruct your view of the lake or something else worth looking at? Again, it is fact dependent, but if your neighbor has applied for a permit and the city has notified you, you should disclose it. If, on the other hand, your neighbor has mentioned doing this at the block party for the last three years and always seeks your approval, you probably don't have to disclose it.
But I have a different view on things like that. I think you should tell your buyer that has a contract on the house about your neighbor. If they want to do due diligence with the neighbor, they can. And then no one can ever sue you for non-disclosure.