Chapter 2 includes background information that describes the changes since 1980 in geospatial data policy and technology that influence the development of parcel data. Chapter 3 discusses the needs for and benefits of nationally integrated land parcel data by entities at the federal, state, and local government levels, as well as private citizens and private industry. Chapter 4 describes the current status of parcel data in the United States, as well as in other countries for comparison. The challenges that must be overcome to develop complete national land parcel data are laid out in Chapter 5, and Chapter 6 provides a vision and model for what nationally integrated data could be. Chapter 7 makes recommendations for overcoming the obstacles and barriers to developing this national land parcel database and for achieving the vision described in Chapter 6.