I bought the department of special projects a few days ago and still no epic projects have shown up, am I missing something? Is there other requirements to start building epic projects?
Epic projects appear after you have any specialisation apart from parks and landscape that benefits a fully upgraded residential zone. Once you have completed an epic project, there is a 12 hour cooldown until you can start another one. Start an epic project by taping on the winged gold helmet.
You can read more on EA's Help Pages: Simcity Buildit Epic Projects
In my case, I had been ignoring the blue bubble over the TOWN HALL - the lady kept talking to me about “building a park” and seeing as I didn’t want to build a park, I never passed that message. Once I did build a park at lvl 30, the next town hall message came through, then the next, etc. After a few more messages about the airport and Vu’s tower, the message to create your first epic building shows up.
Hope that helps!