Which of the following could be considered valuation guidelines?

Unit costs are considered valuation guidelines because they establish a baseline for assessing the value of personal property. They represent the cost associated with acquiring or reproducing an item, such as machinery or equipment. Knowing the unit costs helps assessors determine fair market value by providing a consistent metric to evaluate the worth of similar items in the market.

Valuation guidelines are crucial for ensuring that assessments are both uniform and justifiable. They assist in maintaining transparency and consistency in the assessment process. While operating expenses and labor statistics can influence the overall valuation indirectly, they do not serve as direct methodologies for establishing the value of personal property. Physical inspections, although important for gathering information about the condition and utilization of assets, are more about the evaluation process rather than providing specific valuation guidelines.