For which of these properties would gross income multiplier be calculated?

The gross income multiplier (GIM) is a valuation tool commonly used in real estate to assess the value of income-producing properties. It is calculated by dividing the property's sale price or value by its gross rental income. This metric is particularly applicable to properties that generate income from multiple rental units, making it useful in evaluating investment properties.

In the case of the apartment building with 50 units, the gross income multiplier is relevant because the property is designed specifically for rental purposes, generating a steady stream of rental income from its numerous tenants. By calculating the GIM, an appraiser or potential investor can quickly estimate the value of the property based on its income potential, allowing for effective comparisons with similar investment opportunities.

On the other hand, properties like a condominium building with only four units or a duplex may not provide a sufficient data set for a reliable GIM, as the sample size is smaller. The single-family owner-occupied home, while it may generate rental income if it were to be rented out, is not primarily an income-producing property in the same sense as an apartment building. Therefore, the application of the gross income multiplier is most suitable for the apartment building with 50 units, given its scale and income generation profile.