What is a common characteristic of income-producing appraisal types?

Income-producing appraisal types primarily focus on determining the potential rental income a property can generate. This characteristic is essential because the purpose of these appraisals is to evaluate properties that produce income, such as multifamily units or commercial buildings. By assessing the potential rental income, appraisers can better determine the property's market value and investment viability, which is crucial for investors looking to purchase income-generating real estate.

In this context, the other options do not align with the primary focus of income-producing appraisals. For instance, assessing market value of listed properties relates more to general real estate appraisals rather than specifically to income production. Similarly, evaluating required renovations and calculating tax implications are important considerations but do not reflect the primary objective of income-producing appraisals, which is centered on estimating potential rental income and the property's ability to generate cash flow.