About two dozen factors are used in the computer model.
Currently, the factors include:
Style of home, neighborhood, square footage of the residence, size of lot, construction grade, condition of the residence, age of the building, number of bedrooms and total rooms, full and half baths, rec room, enclosed and open porches, the number of living units, garages, attic, basement, story height, view, exterior siding, central air conditioning, fireplaces, heating, construction costs, land value. The factors were selected as they were found to have the greatest influence on market value.