You may use the Unreal Engine freely as a student. We do not require any student identification. (the engine is free for everyone to use)
As an Architecture student, I recommend you choose the Unreal Studio beta. This includes the Unreal Engine, but also includes additional features for those in the non-games industries. Again, it is free to use, and as a student, you will not be selling and distributing your project for sale anyway.
You can review the Unreal Studio EULA here: Datasmith - Unreal Engine
You can join the Unreal Studio beta here: Datasmith - Unreal Engine
Cheers