I'm having success with buying houses with owner occupied mortgages, putting in sweat equity, building an ADU, then repeating that process by renting out the old house and buying another. But I'm wondering how often I can repeat this process. I'd like to do it once per year, or possibly even faster, but I want to make sure I'm not violating any Fannie Mae regulations, because I really like putting down only 5%, which saves me cash for the ADU build.

Does anyone know how quickly I can get another owner occupied mortgage after my last one?

Thanks!

12 months. It is in the mortgage (or deed of trust depending on your state).