file 3520 for a foreign house ( more than 100k,gift from parents), and I'm planning to sell it next year. Do I file any form after I sell it (tax prep said I need to file some form out)

Tax prep told me after I sell the house in 2024. In 2025, I might need to file some tax form but he didn't mention which one because he wants me to come back to use his service. What potential tax form is that? I know that I need to file an FBAR for 2024 because I will transfer that money into my foreign account, but other than that I don't know what else I need to file.