Specifications include, but are not limited to: The State of Montana, Department of Revenue, Property Assessment Division (State) seeks responses from qualified Contractors (Offeror) to provide sketch verification and validation services. The intention of this effort is to compare aerial imagery to our CAMA sketch data to identify differences between the two. Properties will be flagged to reveal the extent to which the imagery and the sketch do not match. The Offeror will provide necessary services to geo-reference the State’s CAMA sketches over their corresponding building shapes on the State’s orthophotography, compare the CAMA sketch to the imagery, flag any differences and provide reporting on the differences found. The end product of the sketch validation service provided by the Offeror will include an ESRI shapefile or Geo database that includes all georeferenced sketches as a polyline/polygon layer.