Net Operating Income is not only useful for assessing rental performance; it also plays an important role in estimating the value of an income-producing apartment building. One common valuation measure is the capitalisation rate, or cap rate. It compares a property’s annual NOI with its market value and helps investors assess the relationship between income and price. If you are exploring loans for multifamily homes, understanding how NOI and cap rates connect can help you review asking prices, compare similar properties and assess whether the proposed acquisition is supported by the building’s operating performance.
The cap rate formula is annual NOI divided by property value, multiplied by 100 to express the result as a percentage. For example, a building with an annual NOI of $180,000 and an estimated value of $2.4 million has a cap rate of 7.5%. The same NOI applied to a $3 million value produces a 6% cap rate. This illustrates how the relationship between income and price changes. A lower cap rate does not automatically make a property a better investment, and a higher cap rate does not guarantee stronger returns. Property condition, location, occupancy, expenses and market risk all matter.
Investors should be careful about the NOI figure used in a valuation. A seller may provide projected income based on higher rents or reduced expenses, while the property’s current financial statements show a different result. Review actual rent collections, vacancy, leases and recurring operating costs before relying on a projected figure. If you plan to renovate or reposition the building, separate current NOI from the income you expect after completing the work. This makes it easier to understand the assumptions behind the proposed value and the risks involved in achieving the projected performance.
For multifamily investment loans, property value is considered alongside NOI and DSCR. InstaLend’s multifamily term loan programme is designed for stabilised apartment buildings with 5+ units and majority-residential mixed-use properties. Loan qualification is based on property income and asset value, rather than personal W-2s or tax returns. Loan amounts range from $500,000 to $10M+, with a minimum DSCR of 1.20x–1.25x and 85% or higher occupancy preferred, subject to underwriting. Understanding cap rates helps you assess the asking price, while accurate NOI calculations help you present the property’s financial performance.