How Interest Rates Affect Commercial Property Values

Higher interest rates push commercial property values down through two channels. They raise the return investors require, which lifts cap rates and lowers the price paid for a given NOI. They also raise borrowing costs, which cuts cash after debt service and can shrink the loan a lender will replace at maturity. Lower rates work in the reverse direction, although weaker income or a wider risk spread can absorb the benefit. The size of the effect depends on income growth, property type and when the debt resets.

Why a base rate move reaches a property price through the cap rate

A property is worth the price at which its expected income delivers the return investors require, and that required return is built on a base rate. Real estate and other risk assets are typically priced as a spread over a base rate such as a Treasury yield.

Lower rates reduce the discount rates applied to property cash flows and push prices up. Higher rates reverse the process, because the same cash flows are discounted at a higher figure and are worth less today.

Direct capitalization states value as one year of net operating income divided by the cap rate. The cap rate is that single year of NOI over price, so it does not measure yield, return or IRR over a hold, and it says nothing about growth or sale proceeds.

A simplified perpetual growth model links the two ideas: the cap rate equals the discount rate minus the constant growth rate. The discount rate in turn equals the base rate plus the risk spread. A base rate increase therefore passes into the cap rate one for one only when the spread and the growth assumption stay fixed.

They did not stay fixed in the repricing that followed higher rates. Investors sought higher income returns from private real estate to justify its risk premium over government-backed Treasuries and low-risk fixed-income instruments, and that demand drove a valuation reset.

The spread is an observed quantity that changes. In one quarter the average appraisal-based yield in the NCREIF Property Index sat slightly below 4 percent, roughly 200 basis points above the ten-year Treasury yield. Both the base rate and the spread move the cap rate.

“Because private real estate is primarily an income-generating investment, investors sought higher income returns from private real estate to justify the risk premium of investing in real estate versus government-backed Treasuries and low-risk, fixed-income instruments.”

How income and property type decide whether a rate move shows up in value

Valuations are a function of operating income and rates, whatever the property type. A rate increase can be offset by NOI growth, and falling NOI compounds it.

The exact relationship is ending value divided by starting value equals the NOI growth factor multiplied by the starting cap rate divided by the ending cap rate. Preserving value therefore requires NOI to grow by the same proportion as the cap rate rose, with the income definition held constant.

Tenant demand in a recession can differ by sector and jurisdiction. A common cap rate shock across a portfolio isolates pricing sensitivity, and a common income assumption across the same portfolio can hide those differences in demand.

Timing of income matters as much as its level. Stabilized NOI expected after a lease-up cannot replace in-place NOI in a current-income capitalization. A discounted cash flow valuation carries the intervening income and the time to stabilization, and the debt interest paid during that period is a carrying cost the equity funds.

Income assumptions can themselves be the source of overvaluation. Speculative demand, easy credit, optimistic rent and NOI assumptions, loose underwriting, high securitization volume and thin liquidity are named drivers of excessive valuations. A rate sensitivity that leaves an aggressive income forecast untouched measures only part of the exposure.

Coverage ratio, debt yield and the refinancing gap

Higher borrowing costs reduce cash to equity before they change appraised value, and refinancing can expose a funding gap while NOI stays positive.

NOI is measured before debt service. A higher loan rate leaves NOI unchanged and reduces cash after debt service. Deducting the extra interest from NOI before capitalizing it mixes a financing cost into an income measure, which understates the value of the property itself.

Debt service coverage ratio equals NOI divided by debt service. Debt yield equals NOI divided by the loan balance. With NOI and principal unchanged, a higher rate lowers DSCR and leaves debt yield exactly where it was, so the two ratios answer different questions. Thresholds for both vary by lender and by transaction.

Fixed-rate debt keeps its contractual interest calculation through the rate period. Floating-rate debt changes when its reference rate resets, within any floor and cap terms. A rate cap that expires before the modeled exit gives no protection for the rest of the hold.

At maturity the lender sizes the replacement loan. A maximum loan-to-value ratio produces one ceiling and a minimum coverage ratio produces another, and the smaller ceiling controls. For an interest-only loan the coverage ceiling equals NOI divided by the product of the required coverage ratio and the loan rate.

Higher rates lower the coverage ceiling. Higher cap rates lower the value ceiling. A funding gap equals the maturity payoff plus refinancing costs minus replacement proceeds, whenever that result is positive.

Worked example: a $12 million loan on a $20 million property when cap rates and loan rates rise

A rate rise reaches an owner through exit value and through the loan at the same time. This hypothetical shows how the two combine. The property earns $1,200,000 of NOI in both cases. The loan is $12,000,000 and interest-only, and equity is the rest of the price. Both cases cover one year and carry no selling costs, refinancing fees or capital spending.

Base case: the cap rate is 6 percent and the loan rate is 5 percent. Value equals $1,200,000 divided by 0.06, which is $20,000,000. Equity equals $20,000,000 minus $12,000,000, which is $8,000,000, and the debt ratio equals $12,000,000 divided by $20,000,000 multiplied by 100, which is 60 percent.

Debt service equals $12,000,000 multiplied by 0.05, which is $600,000. DSCR equals $1,200,000 divided by $600,000, which is 2. Cash after debt service equals $1,200,000 minus $600,000, which is $600,000. A sale at the same value returns $8,000,000 of equity, so total equity proceeds equal $8,000,000 plus $600,000, which is $8,600,000.

Stressed case: the cap rate rises to 7.5 percent and the loan rate rises to 8 percent, with NOI unchanged. The cap rate rise is 7.5 minus 6, which is 1.5 percentage points, or 1.5 divided by 6 multiplied by 100, which is 25 percent in relative terms.

Value equals $1,200,000 divided by 0.075, which is $16,000,000. The decline equals $20,000,000 minus $16,000,000, which is $4,000,000, and $4,000,000 divided by $20,000,000 multiplied by 100 is a 20 percent drop. Residual equity equals $16,000,000 minus $12,000,000, which is $4,000,000, so equity falls by ($8,000,000 minus $4,000,000) divided by $8,000,000 multiplied by 100, which is 50 percent.

Debt service equals $12,000,000 multiplied by 0.08, which is $960,000. DSCR equals $1,200,000 divided by $960,000, which is 1.25. Cash after debt service equals $1,200,000 minus $960,000, which is $240,000. Total equity proceeds equal $4,000,000 plus $240,000, which is $4,240,000, or $4,360,000 below the base case ($8,600,000 minus $4,240,000).

Refinancing at maturity uses hypothetical lender terms: a maximum loan-to-value of 60 percent and a minimum DSCR of 1.25, interest-only, at each case’s loan rate. In the base case the value ceiling equals $20,000,000 multiplied by 0.6, which is $12,000,000. The coverage ceiling equals $1,200,000 divided by (1.25 multiplied by 0.05), which is $19,200,000. The lower ceiling equals the $12,000,000 payoff, so the gap is zero.

In the stressed case the value ceiling equals $16,000,000 multiplied by 0.6, which is $9,600,000. The coverage ceiling equals $1,200,000 divided by (1.25 multiplied by 0.08), which is $12,000,000. The lower ceiling is $9,600,000, so the gap equals $12,000,000 minus $9,600,000, which is $2,400,000. Coverage alone would allow the full payoff, and the value constraint creates the gap even though cash after debt service stays positive.

The income offset follows from the same arithmetic. Holding a $20,000,000 value at a 7.5 percent cap rate requires NOI of $20,000,000 multiplied by 0.075, which is $1,500,000. That is $300,000 above $1,200,000, and $300,000 divided by $1,200,000 multiplied by 100 is 25 percent growth, matching the 25 percent relative rise in the cap rate.

Finally, the cap rate at which sale value equals the loan is $1,200,000 divided by $12,000,000 multiplied by 100, which is 10 percent, and at that rate value equals $1,200,000 divided by 0.1, which is $12,000,000.

Why appraised values and transaction prices reprice at different speeds

Limited transaction volume can delay valuation adjustments when rates rise. Low global transaction volume has been attributed to higher interest rates, and an unsold property produces no new sale price to challenge an older mark.

Appraised values in the NCREIF Property Index (NPI) stood 18 percent below their peak overall and 33 percent below for office during a period when a broader gauge of real estate prices had mostly reset 20 to 40 percent below peak. The two readings cover different populations and valuation processes, and neither works as a correction factor for an individual appraisal.

Transaction cap rates show the repricing from the sale side. In one quarter, properties sold by open-ended funds owning core commercial real estate traded at nearly 6.5 percent cap rates, and the following quarter the figure fell to 5.9 percent. That sequence reads as transaction valuations having corrected.

Listed real estate markets typically bottom around a year before private real estate. In one pension benchmark for private real estate, higher interest rates and lower growth led to repricing and eleven quarters of depreciation.

A reported cap rate also depends on its numerator. Current annual NOI and projected stabilized NOI produce different cap rates for the same price, so comparisons between sales or between a sale and an appraisal need the income definitions reconciled first.

Pricing mistakes that distort rate sensitivity

A cap rate is one year of NOI divided by price. It does not measure yield, return or IRR over a hold, because it leaves out growth and sale proceeds, and a holding-period return needs the full cash flow series.

Moving the cap rate one for one with a base rate assumes the risk spread and growth stay fixed. Investors sought higher income returns relative to Treasuries and low-risk fixed income to justify real estate’s risk premium, so the required return moved by more than the base rate alone. The spread of roughly 200 basis points seen in one quarter is a single observation and carries no promise of persistence.

Equating a percentage rise in the cap rate with an equal percentage fall in value confuses the denominator with the quotient. In the worked example a 25 percent relative rise in the cap rate produces a 20 percent decline in value, because value moves with one divided by the cap rate. The equity decline of 50 percent is larger again, because the loan balance does not fall.

Reducing NOI by the new interest cost and then capitalizing the result changes the income measure for a financing reason. NOI stays at $1,200,000 in both example cases, and the loan rate acts only on debt service and on the coverage ceiling.

Stopping the analysis at value hides the funding question. Cash after debt service stays positive at $240,000 in the stressed case while the refinancing gap reaches $2,400,000. Value and coverage give separate ceilings, and the smaller one decides the proceeds.

Carrying a coverage figure into a model as a universal threshold misstates how loans work. The 1.25 in the example is a hypothetical lender term, and actual coverage and loan-to-value requirements vary by lender and by loan document.

Questions to ask when testing a rate and refinancing scenario

Which NOI definition sits under the entry and exit cap rates? Current and stabilized income produce different cap rates for the same price, so one definition has to run through both.

How far can the cap rate rise before residual equity reaches zero? The break-even equals NOI divided by the loan balance, which is the debt yield, and a sale at any lower cap rate leaves some equity before costs.

What NOI growth offsets a given cap rate increase? Required NOI equals the value to be preserved multiplied by the new cap rate.

Is the debt fixed or floating, and when do any rate protections expire? A cap that ends before the modeled exit leaves the final part of the hold exposed to resets.

Which constraint sizes the replacement loan, value or coverage? The smaller ceiling controls, and the gap can come from the value test while coverage looks adequate.

What do DSCR and debt yield show at the current rate and at higher rates? DSCR falls as the rate rises and debt yield stays fixed when NOI and principal are unchanged.

Does the income forecast carry optimistic rent or NOI assumptions that a rate test leaves untouched? A rate sensitivity covers only the cap rate and debt cost channels.

Are appraised marks and recent sale prices reconciled on the same income basis? Quiet markets can leave older marks standing above where a buyer would transact.