Embodiments herein relate to a computer-implemented method for aggregating financial institution account transactions to generate real estate financial transaction data. The computer-implemented method includes retrieving the financial institution account transactions from one or more financial institutions. The computer-implemented method includes automatically sourcing the financial institution account transactions by identifying each transaction of the plurality of financial institution account transactions as specific to one or more real estate sales to generate sourced financial information and automatically categorizing the sourced financial information to generate the real estate financial transaction data. The computer-implemented method includes analyzing the real estate financial transaction data to determine a return on the real estate sales.