Interest rates do not hit a building directly. They hit the loan on it, and the loan decides how much of the damage reaches you.
The cleanest way to see that is to take one property and move rates on it. What follows is an illustration, not a deal: the numbers are round and hypothetical, but the mechanics are the ones a lender and a sponsor actually work through.
The Building and the Loan
Picture a 20-unit property in a Class B Southern California neighborhood, built in the 1980s, worth $6,000,000 today. It produces $300,000 of net operating income (NOI), which is rent collected less operating costs and before any loan payment. At that NOI the market is pricing it at a 5% capitalization rate.
The sponsor borrowed $2,700,000 against it, a 45% loan-to-value (LTV) ratio. The loan carries a 6% fixed rate on a 30-year amortization schedule, so annual principal and interest come to roughly $194,000. Dividing NOI by that payment gives a debt-service coverage ratio (DSCR) of about 1.54: the building earns $1.54 for every dollar the lender is owed.
After the lender is paid, about $106,000 a year remains for reserves and distributions. Hold those three figures in mind: $194,000 of debt cost, 1.54 coverage, $106,000 of cash left over. Everything below is a change to one of them.
For comparison, keep a second version of the same building in the back of your mind, financed the way many syndications were in 2021: a $3,900,000 loan at 65% LTV. On the same terms its debt cost is roughly $281,000 and its coverage is 1.07. Same bricks, same tenants, very different margin for error.
Rates Rise 150 Basis Points
Suppose borrowing costs move from 6% to 7.5%. On a fixed-rate loan nothing changes until the loan matures or the sponsor refinances, which is the main argument for fixing. So assume the worst version of the event: the loan resets or is replaced at the new rate.
Debt cost on the $2,700,000 loan climbs to roughly $227,000 a year, an increase of about $33,000. Coverage falls from 1.54 to about 1.32. That is still comfortably above the 1.20 to 1.25 floor most lenders write into the loan documents, so no covenant is tripped and no cash sweep begins. Cash left after debt service drops to about $73,000, a real reduction in distributions but not a crisis.
Now the 65% version. Its payment rises to about $327,000 against the same $300,000 of NOI. Coverage is 0.92. The building no longer earns its own loan payment, and the sponsor is either calling investors for capital or negotiating with the lender. Nothing about the property changed; only the structure of the debt did.
Value moves too, because buyers price buildings partly off the cost of the money they use to buy them. Cap rates rarely move point-for-point with rates, but if this one drifts from 5% to 5.5%, the building is worth about $5,450,000 rather than $6,000,000. On the conservative loan, LTV creeps to about 49.5%, still under half. On the 65% loan it is now about 72%, above what most lenders will refinance.
That last point is the one investors tend to skip. A refinance has to clear two tests at once: a maximum LTV, often 65%, and a minimum coverage, often 1.25 on the new rate. At 7.5% the 1.25 test caps new debt near $2,860,000 on this building. The conservative sponsor can replace the $2,700,000 loan with room to spare. The 65% sponsor is roughly $1,000,000 short and has to bring equity to keep the property.
Rates Fall 150 Basis Points
Run it the other way, from 6% to 4.5%. A fixed-rate borrower captures nothing unless the loan allows prepayment on reasonable terms; that is the cost of the certainty. If the sponsor can refinance, annual debt cost on the $2,700,000 loan falls to roughly $164,000 and coverage rises to about 1.83. Cash after debt service grows to about $136,000.
If cap rates ease in sympathy, say to 4.5%, the same $300,000 of NOI is now worth about $6,670,000, and the LTV on the original loan drifts down to around 40%. The sponsor has a decision: leave the extra cushion in place, or borrow against it. A conservative operator usually leaves most of it, because the next 150 basis points can go either direction and the cushion is what made the first scenario survivable.
Notice the asymmetry. Falling rates improve the numbers gradually and give the sponsor options. Rising rates can take away the ability to refinance at all, and that is a different kind of loss. The downside is not the mirror image of the upside, which is why leverage is set for the bad case rather than the average one.
What the Example Says About Reading an Offering
When you review a private real estate investment, you cannot control where rates go. You can read the loan. Three things in the offering documents tell you most of what the exercise above showed.
- The LTV at closing, and the LTV the sponsor projects at the point the loan must be replaced. The gap between them is the appreciation the plan depends on. What loan-to-value means in private real estate walks through how to read that figure.
- The coverage ratio at today’s NOI and at the lender’s covenant floor. Ask what rate would push the building below the floor, and how far that is from the current rate.
- Whether the projected refinance assumes a rate at, above, or below the rate on the existing loan. A plan that only works if money gets cheaper is a rate forecast wearing a business plan.
VisionWise Capital keeps sub-50% loan-to-value on every property for the reason the numbers above make plain: a rate shock on a lightly levered building is a smaller distribution, while the same shock on a heavily levered one can be a capital call. We would rather explain a quieter quarter than a rescue. The coverage side of the same question, and how lenders test it, is covered in Debt-Service Coverage in Multifamily Investing.
Rates will move over any hold long enough to matter. The question worth asking a sponsor is not where they think rates are going, but what happens to this loan on this building if they are wrong by 150 basis points.
Want to see how a lightly levered Southern California building is underwritten against a rate move? Talk to VisionWise Capital →
This content is for informational purposes only and does not constitute investment, legal, or tax advice. Real estate transactions and private placements involve significant risk, including potential loss of principal. Always consult qualified legal, financial, and tax professionals before making investment decisions.
Related Reading
- Fixed-Rate vs. Floating-Rate Real Estate Loans
- Loan Maturity and Refinancing Risk in Private Real Estate
- Why VisionWise Capital Keeps Loan-to-Value Below 50%
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