Final answer:
The calculation of gross income as described, using the rental income from an office or a six-unit building, is correct with annual gross incomes of $24,000 and $57,600 respectively.
Step-by-step explanation:
When appraising small residential income properties, a common practice is to use multipliers based on gross rent or gross income. Gross rent is typically a monthly figure while gross income is an annualized figure, derived from adding up all the income that the property generates over a year, including the total rents and any other operational income. For example, if you rent an office for $2,000 a month, the gross income would indeed be $2,000 x 12, providing an annual income of $24,000. Similarly, for a six-unit building with each unit rented at $800 a month, the gross income would correctly be calculated as $800 x 6 units x 12 months, equaling $57,600.
Therefore, the statement 'If I rented an office for $2,000 a month, the gross income would $24,000 per year. If I rented each unit of a six-unit building for $800 a month, the gross income would be $800 x 6 x 12 = $57,600' is true.