I am interested in the purchase of real estate in one quarter in Dallas. How do I know which areas are zoned commercial development, and what kind of commercial development is allowed? (For example - restaurant). I have expressed interest in a place too early, because it creates "buzz", which can lead to rising costs and even losing face. That is why there is a database for the classification of commercial real estate agents? (For example, you can discover the history of lawyers and their rank and past indiscretions.)