Described are methods and systems for retrieving and serving the regulatory history of a property. For example, an identification of data sources for permits and approvals is stored in a computer system. Property identifiers from the data sources are stored in the computer system. The system identifies the types of permit and approval data available from each of the data sources for each of the property identifiers. A determination can be made of the completeness of the regulatory history available for each property associated with each of said property identifiers. The system receives a request for the regulatory history of at least one of the properties associated with the property identifiers. A web page may be populated with a list of the regulatory history for the property.