Scherzy, this may seem like an odd answer, but I think your building might sustain some damage, but that this probably will not happen while you are home. I think you will be safe.
You are symbolized by Mercury. According to the traditional table of essential dignities that I use, Mercury is in its own triplicity and terms. So you are in reasonably good shape.
Your home, with Leo on the 4th house cusp, is ruled by the sun. Mercury is past its last aspect with the sun. However, the sun applies to a square with Saturn, which rules structures. As you note, the sun is in the sign of its fall. The moon indicates your emotional stake in this matter, but also your home, as well. The moon applies to a conjunction with Mars, which is not ideal.
Given your state of nervous apprehension about another earthquake, perhaps the best course would be for you to visit your parents, and explain to your law school professors in advance why you intend to miss classes. See what you can do about making up any missed school work.
I have not made a study of timing in horary astrology, mostly because I am not convinced of its accuracy.
I am puzzled as to why so many planets, including the sun and Mercury, appear in the 5th house. The 5th usually relates to children or leisure activities. Possibly you will be in another part of your city involved in some sort of leisure activity if another earthquake hits soon. If the 5th has some clear meaning for you in the context of your question, please let me know.
Please let us know how this turns out. Hopefully there will not be any more earthquakes, and your normal life can continue without interruption.