Understanding property valuation can help investors estimate how much financing an apartment building may support. Multifamily mortgage lenders may assess an income-producing property’s net operating income (NOI), market capitalisation rate, comparable transactions and physical condition. These factors help establish whether the proposed loan aligns with the property’s financial performance and estimated market value. Investors should not assume that a seller’s asking price or a projected future value will automatically be accepted by a lender.
One commonly used income-based calculation is property value equals NOI divided by the cap rate. For example, a building producing $180,000 in annual NOI at a 6% cap rate implies a value of $3 million. If the same NOI is assessed at a 7% cap rate, the implied value falls to approximately $2.57 million. This demonstrates why the selected cap rate matters. The figures are illustrative and should not replace a property-specific valuation or analysis of comparable sales.
To estimate NOI, subtract operating expenses from effective gross income. Start with potential rent, account for vacancy and credit losses, add documented other income and deduct operating costs such as taxes, insurance, utilities, repairs and management. Avoid including mortgage payments in NOI, as debt service is evaluated separately. Lenders may use their own assumptions for vacancy, expenses and reserves, so the NOI in an owner’s records may differ from the income used for underwriting.
Valuation also affects refinancing because the new loan may be limited by both property value and the income available to service debt. Even when a building has appreciated, a low DSCR or weak occupancy may restrict borrowing capacity. Investors seeking a multifamily refinance loan should therefore review NOI, relevant cap rates, comparable sales, outstanding debt and expected refinancing costs together. InstaLend’s published multifamily term loan criteria use NOI, DSCR and asset value for qualification. Preparing realistic financial information before applying can help investors assess whether their desired loan amount is supported by the property’s performance rather than relying on valuation alone.