The CAMA software then prices the improvements utilizing construction cost data particularized for that area of the State. A county modifier is utilized to modify the price of the improvements based upon current construction costs. Other times a subdivision or agricultural area will be unique and will stand alone as a single neighborhood. Again all data is entered by tax map and parcel number. Each parcel is physically reviewed and adjustments applied to reflect individual variations with each neighborhood.
Mapping is crucial to any mass appraisal.
The county tax maps have been generated over the years utilizing recorded plats, recorded descriptions and aerial photography. Tax map and parcel numbers are assigned to each parcel in the county. Based upon lot measurement or acreage derived by mapping, lot dimensions or acreage is entered into the CAMA system by tax map and parcel number for each lot or parcel. This appraised value will reflect market value for the subject land. The field data collector or appraiser will visit the structure.