HiYes there is a way to access the parcel namer tool in ArcObjects. However you cannot change which fields it is updating. It currently updates the Name field on the parcels table and cannot be configured to update a different field.Below is a link the the CadastralUI object model - do a search on "namer" to find the parcel namer tool API and anything related:http://resources.arcgis.com/en/help/arcobjects-net/pdf/CadastralUIObjectModel.pdfChristine