As at every university in Germany, applying and enrolling at TU Berlin are two separate processes. You need to apply before you can enroll. The first step is to apply to Technische Universität Berlin. Once you have been accepted, you will be given a deadline for enrollment.
Be sure to find out in good time which steps are necessary for your degree program so that you can collect the documents you need and upload these by the deadlines. The following pages tell you everything you need to know to apply for and enroll in a degree program.