An on-line real estate information aggregation system for supporting real estate transactions by aggregating real estate-related information into a central research center. The research center tool enables users to conduct research on specific properties, markets, submarkets or property types within a market, to research and verify the credit worthiness of potential tenants, and to search commercial real estate news articles from an aggregated database. The on-line real estate information aggregation system comprises a distributed computer network, a plurality of client computers coupled to the distributed computer network, and a property services server platform connected to a data source. Hosted on the property services server platform are a real estate information processing tool for processing financial information, a research market module for accessing research information on available properties and markets, a credit reports module for accessing credit report information of individuals and companies, a news and analysis module for accessing real estate news information, and an order available reports module hosted on said property services server platform for enabling the purchase of market reports.