All commercial real estate agents use property data such as asset type, location, building size, number of units, etc. as a fundamental. Transactional data

How do employees of the large commercial real estate firms Really make their money?

Your use of capital letters in the word “Really” seems to be suggesting that you believe employees of commercial real estate firms have some hidden source of income. This would be a false perception.

Agents who work for these firms are not really “employees” since they are usually self-employed. The only “employees” of a brokerage firm are the receptionists, assistants and office support personnel, not the agents who work there.

The real estate agents working at these firms make money by participating in real estate transactions for a fee, or commission.