Cadastral data will be defined and briefly reviewed. This presentation will focus on a discussion of the benefits of object-oriented models for cadastral data and provide examples of cadastral data objects. The status of modeling efforts will be presented along with its relationship to the Cadastral Data Content Standard. Discussion topics also include COM, object-oriented analysis and design, and extending ArcInfo 8.x classes. Co-authors: Gregory S. Tudor, PLS, Washington State Department of Natural Resources Nancy von Meyer, P.E., Ph.D, Fairview Industries