Why Rising Rates Can Lower Property Values

Rising rates lower commercial property values through two linked channels. Buyers can require a higher capitalization rate, and since value equals net operating income divided by that rate, the same income supports a lower price. Debt also costs more, which can push payments above property cash flow and shrink what a lender will advance at refinance. Neither channel needs a change in current income.

Value is income divided by a rate, so the rate sits in the denominator

A cap rate is first-year net operating income divided by price. Rearranged, indicated value is net operating income divided by the cap rate. With income fixed, a higher cap rate gives a lower value and a lower cap rate gives a higher one.

The same arithmetic shows why an equal rise hurts some assets more. The new value equals the old value multiplied by the old cap rate and divided by the new cap rate, so a given increase removes a larger share of value from a property priced at a low cap rate than from one priced at a high cap rate.

The income basis needs a label before any comparison means anything: trailing, in-place, forward, stabilized or adjusted by the seller, with excluded items stated. Two cap rates built on different bases are different measurements.

A rate-driven markdown leaves the rent roll and the expense statement untouched. Operations can be identical before and after while the price a buyer pays for that income changes.

Why higher market rates tend to pull cap rates up

Higher rates raise commercial real estate borrowing costs across regions, and cap rates can rise with them. Transaction volume can fall as well, so the repricing shows up in appraisals and bids even when no building has changed.

A fixed-rate asset shows the pricing logic in its plainest form. Its coupon does not move when market rates rise, so its market value falls. Property income can grow with rents, and a buyer who accepts a low cap rate is relying on that growth.

The first-year cap rate therefore carries a required return today and an expectation of later income growth together. When debt gets more expensive, the growth needed to justify a given price rises with it.

When debt costs more than the property yields

Buying at a 3.5% cap rate with borrowing at 5% or more is negative leverage: the loan costs more than the property yields. Whether debt payments exceed property cash flow depends on the loan-to-value ratio and the amortization. At 5% interest-only, payments exceed a 3.5% cap rate’s cash flow once the loan passes 70% of price. Each dollar borrowed costs more than the yield on each dollar of price.

Under those terms the outcome depends on income growth, from rent increases or expense reductions. A flat income stream carries the debt only at lower leverage.

Underwriting guidance applies a related test. The cap rate should generally exceed the mortgage constant, which is annual scheduled debt service as a share of the loan amount. The constant includes amortization, so it can sit well above the note rate, and comparing the cap rate with the note rate alone understates the gap. The comparison is a reasonableness check, and thresholds vary by lender and program.

“The opposite of that, buying at a cap rate that is the same as your debt costs or below it in a negative leverage environment fundamentally means that you are all in on NOI growth either through rent growth or expense, um, expense reduction.”

Why fixed-rate and floating-rate borrowers feel a rate rise at different times

A floating-rate loan passes a rate increase into required payments right away. Repayment costs rise on the current balance, and coverage tightens with no change in income.

A fixed-rate borrower feels little during the term. The exposure arrives at maturity or sale, when the market cap rate and the lender’s valuation assumptions apply to the next transaction. The existing coupon offers no protection against a new appraisal.

A refinancing lender can require strong property income growth, reassess appraised value in light of higher cap rates, and apply a more conservative risk appetite. A lower appraised value cuts proceeds even when the old balance is unchanged, which leaves a gap between what is owed and what the new loan covers.

Worked example: refinancing a hypothetical $13 million loan after a one point cap rate rise

Hypothetical inputs, identical in both cases: net operating income of 1,400,000, an existing interest-only loan of 13,000,000 coming due, and a lender that sizes the new loan at an illustrative 65% of appraised value. Only the market cap rate and the loan rate differ.

Base case. At a 7% cap rate, appraised value is 1,400,000 divided by 0.07, which is 20,000,000. The new loan is 20,000,000 multiplied by 0.65, which is 13,000,000, enough to pay off the existing loan. Owner equity is 20,000,000 minus 13,000,000, which is 7,000,000. At an illustrative 6% interest-only rate, interest is 13,000,000 multiplied by 0.06, which is 780,000. Coverage is 1,400,000 divided by 780,000, about 1.79 times.

Stressed case. At an 8% cap rate with the same income, appraised value is 1,400,000 divided by 0.08, which is 17,500,000. The value decline is 20,000,000 minus 17,500,000, which is 2,500,000, or 12.5% of the base value. The new loan is 17,500,000 multiplied by 0.65, which is 11,375,000. The payoff shortfall is 13,000,000 minus 11,375,000, which is 1,625,000, and it must come from new equity or other capital.

Equity measured against the old loan balance falls from 7,000,000 to 17,500,000 minus 13,000,000, which is 4,500,000. The 2,500,000 value decline is about 35.71% of the base equity. At an illustrative 7.5% rate, interest on the smaller loan is 11,375,000 multiplied by 0.075, which is 853,125. Coverage is 1,400,000 divided by 853,125, about 1.64 times.

Debt service rose from 780,000 to 853,125 even though the loan shrank, and coverage fell from 1.79 to 1.64 times. Coverage stays above 1.0 in both cases, so the payoff shortfall is the constraint that forces new capital into the deal. A 12.5% price move produced a 35.71% equity move because the loan balance stayed fixed while value fell.

Mistakes in reading a rate-driven valuation change

A cap rate is one year of net operating income divided by price. It does not measure a yield over the hold, a return or an internal rate of return, because it leaves out rent growth, exit value, financing terms and timing, which any return over a hold must capture.

Changing income and the cap rate in the same sensitivity hides which assumption moved value. Holding income constant isolates the capitalization effect, and income assumptions can then be flexed separately.

Comparing the cap rate with the note rate omits amortization. The mortgage constant measures scheduled annual debt service against the loan amount, so it exceeds the note rate on an amortizing loan. A deal that clears the note rate can still fail the constant.

Assuming equal cap rate moves cost equal value ignores the denominator. A given rise removes a larger share of value at a low starting cap rate, and the effect on equity is larger again when the loan balance does not fall with value.

Reading a lower refinance appraisal as proof that income has fallen confuses collateral value with operating performance. A higher cap rate lowers appraised value at unchanged income, while proceeds can also reflect the lender’s income test and risk appetite.

Questions that locate the source of value pressure

Is income held constant in the valuation sensitivity? A fixed income line isolates what a changed cap rate does to value.

Which rate moved: the market cap rate, the loan rate or both? Each flows through a separate calculation, one into price and one into debt service.

Does the debt payment used in coverage reflect the actual amortization and rate terms? A note rate alone does not equal the mortgage constant.

What proceeds follow from the lender’s valuation and income tests at maturity? Those limits can bind regardless of the balance outstanding.

Is the loan floating or fixed? A floating-rate changes the payment immediately, while a fixed coupon leaves the exposure for the next refinance or sale.

Does the case depend on income growth to cover the gap between debt cost and cap rate? A purchase at a cap rate at or below debt cost relies on rent growth or expense reduction.

How large is the gap between the old balance and the likely new loan? That difference is the equity a refinance would require.