$420,000 of NOI supports very different values
A common real estate valuation divides annual net operating income by a capitalization rate. If a property earns $420,000 of NOI and investors accept a 5.0 percent cap rate, the indicated value is $8.4 million. At a 6.5 percent cap rate, the same income supports about $6.46 million.
The formula looks simple even though the cap rate contains judgments about growth, property quality, market liquidity, required return, and available financing. Interest rates influence every one of those inputs without determining the final percentage on their own.
Higher debt service lowers the price a buyer can pay
When mortgage rates increase, the annual payment on the same loan rises. A buyer can respond with more equity, lower leverage, or a lower purchase price. Most buyers prefer the third option because additional equity can reduce their return.
Lenders also use debt-service coverage ratios and will reduce the loan amount when NOI fails to cover the proposed payment by the required margin. The resulting financing gap can appear even while the property remains fully occupied.
Cap rates may rise after borrowing costs
Apartment cap rates rarely rise in perfect step with government bond yields. Expected rent growth can absorb part of the pressure, and investors may accept a smaller spread for income they consider durable in a supply-constrained market. The change depends on how buyers balance growth, property risk, and the return available elsewhere.
Transaction markets can freeze before prices fully adjust. Sellers remember the old value while buyers underwrite the new debt cost. Fewer sales make reported cap rates look stable even when private bids have fallen.
$8.4Mvalue at a 5.0% cap
$6.5Mvalue at a 6.5% cap
23%illustrative value decline
A low-rate loan can become a problem at maturity
An owner who borrowed at a low fixed rate may operate comfortably until maturity. At refinancing, the new payment can be much higher and the lender may offer a smaller loan. If the owner cannot contribute fresh equity, a sale or restructuring may be necessary.
Loan maturity schedules can therefore give two identical apartment buildings very different risk profiles. One owner may have years remaining on inexpensive fixed debt, while the other must refinance next quarter at a larger payment and lower loan amount. A property analysis that stops at occupancy and rent leaves this part of the investment unfinished.
Expensive construction can limit new apartment supply
High rates make new construction harder to finance as well, delaying projects whose expected rent cannot support total development cost. Over time, fewer deliveries can strengthen occupancy and rent growth at existing properties.
The near-term effect of high rates is usually negative for values. The longer-term effect can be more balanced because constrained supply helps operations. An investor should separate the mark-to-market value impact from the future competitive-supply impact.
With $420,000 of NOI, the example is worth $8.4 million at a 5 percent cap rate and about $6.46 million at 6.5 percent. The apartments and their income stayed the same, while the return required by buyers increased. I would also test the mortgage payment, maturity date, realistic rent growth, and the cap rate used for a future sale. A larger down payment may lower the projected equity return, although it also reduces the chance that one difficult refinancing forces the owner to sell.
I used the filings, reports, public records, and articles linked below. Figures in the three case studies are practice numbers and are identified near the top of each article.
01Federal Reserve Bank of San Francisco on rates and CRE↗02Federal Reserve financial stability report↗03JPMorgan cap rate guide↗