Before You Debate the Cap Rate, Compare the NOI

An owner sees a property worth $16 million. A buyer sees something closer to $14 million.

The natural assumption is that they disagree about the market. Sometimes they do. But before negotiating the price, there is a more useful question:

Are they valuing the same income?

In multifamily, two parties can apply exactly the same capitalization rate and still arrive millions of dollars apart. The difference can sit inside the operating statement—well before anyone discusses an offer.

One cap rate. Two views of income.

Consider this simplified, hypothetical example:

The $2.18 million gap comes entirely from a $120,000 difference in annual net operating income, or NOI: property income after operating expenses, before debt service.

These figures illustrate the calculation; they are not a market valuation or a recommended cap rate.

The productive conversation starts with identifying what creates that $120,000 difference.

Each adjustment needs support

An owner may be using the last twelve months of actual results. A buyer may be projecting higher insurance costs, a different management expense, or a change in property taxes. Alternatively, the owner’s financial statements may contain a substantial one-time expense that understates the property’s ongoing earnings.

Neither analysis deserves acceptance simply because of who prepared it. Each adjustment needs support.

A higher insurance assumption should have a basis in coverage and pricing. A proposed tax adjustment should reflect the applicable jurisdiction and property circumstances. An expense described as “one-time” should be identifiable, documented, and evaluated against what the property will continue to require.

Lender underwriting makes this distinction too. Fannie Mae’s guidance calls for stabilized operating expenses and excludes nonrecurring, extraordinary expenses from that calculation. That is a useful discipline, although a lender’s analysis does not establish the sale price. Fannie Mae’s underwriting guidance

Occupancy is not the same as collections

There is another distinction that deserves equal attention: occupied units, billed rent, and collected income are different measures.

A rent roll can look healthy while concessions or unpaid balances weaken collections. Conversely, recent leases may show an improvement that has not yet worked its way through a full year of financial statements.

Both situations require context. A strong recent month deserves investigation before it becomes a twelve-month assumption. An older operating statement also deserves scrutiny if the property has demonstrably changed.

The same applies to renovation upside. Higher achievable rents may be credible, but reaching them can require capital, vacancy, leasing time, and execution. A useful analysis shows current performance alongside a separate improvement scenario, including what it costs to get there.

Build an income reconciliation

Before debating a price, owners and buyers can make the discussion substantially clearer with a simple reconciliation:

• Start with a shared baseline. Use the same financial period and identify what the reported NOI includes.
• List each adjustment separately. Show its annual dollar impact and the supporting documentation.
• Identify when it takes effect. Separate existing conditions from changes expected after acquisition or improvements.
• Show what remains uncertain. Use a range where the evidence does not justify a single assumption.

For an owner, this helps establish which parts of the asking price are defensible and which need better documentation. For a buyer, it makes an offer easier to explain. For an investor, it reveals how much of the projected result depends on the property’s existing earnings versus future execution.

Underwriting a property before introducing it to buyers provides a basis for discussing whether the numbers support a transaction—and where further work is needed.

A useful broker opinion of value should provide that same clarity. Alongside a value range, it should explain the income assumptions, the adjustments, and the factors most likely to change the conclusion.

Before deciding whether an offer is too low or an asking price is too high, ask for the income reconciliation. It may reveal exactly where the disagreement begins.

Published by The Basis. Research dates, source references and illustrative assumptions are retained from the original article.