Questions to ask if you feel like it:
How much does an average apartment go by in rent around this area? (This’ll create the assumption that you’ll buy it all and put all apartments to rent)
How’s the neighborhood? How noisy is it on a scale of 1-10?
Are there spaces to park multiple cars?
It was also a neat gateway to try homebrew development; I have ported 2048 to it as a side project, it was quite different working on it.