Reading Commercial Real Estate Debt Risk Before Investing

A debt review ties each loan’s terms to the cash the property produces and to the cash needed at maturity. It tests coverage against a rate rise and an income decline, then sizes what a replacement loan would provide against the balance due. The gap between those two figures, and the equity available to close it, is the central finding.

Taking inventory of every claim on the property’s cash

The first pass is an inventory. Every loan at the property, every facility at the investment vehicle and every pledge of collateral gets its own line. Each line records the balance and the rate type, then the maturity and the coverage test attached to it. A property can pay its own mortgage comfortably while a facility one level up draws on the same cash.

A standard institutional questionnaire for non-listed vehicles asks for debt at both levels. It asks how much borrowing is short term and how much is long term. It also asks for borrowing targets, plus the restrictions and controls that apply, and for coverage ratios, collateralization and the facilities in place. The difference between a target and a control matters. A target states what the sponsor intends to borrow, while a restriction or control limits what the vehicle can do after closing.

Each ratio answers its own question. Loan to value divides outstanding principal by property value. Debt yield divides annual net operating income by outstanding principal, which makes it independent of rate and amortization. Debt service coverage divides the income defined in the loan documents by scheduled debt service, so two deals reporting the same coverage figure can use different income definitions. Lenders set their own thresholds for each test.

Borrowing magnifies both the opportunity for gain and the risk of loss on an investment. It also raises exposure to rising rates and to severe downturns, which is why the inventory comes before any projection.

Building the sensitivity table for a floating-rate loan

A floating-rate loan lets the interest cost move with the index. The sensitivity table holds the balance constant to isolate that effect. When the index rises, debt service rises even though the amount borrowed is unchanged, and the cash remaining after debt service falls by the same amount if income is unchanged.

The sensitivity table isolates that effect. Rows step the rate upward from the going-in level, columns step net operating income downward, and each cell shows coverage and cash after debt service. The question the table answers is what happens if the rate floats up, and the same review asks whether a maturity is approaching.

Variable rate borrowing also carries a refinancing dimension. Increases in market rates raise interest expense under variable rate facilities, and an inability to refinance maturing debt can damage the borrower’s financial condition. The rate table and the maturity test therefore belong in one exhibit, since a rate that rises into a maturity date hits both at once.

Rate caps and hedges, where they exist, change the upper rows of the table. Their strike and term are inventory items in their own right, and so is the cost of buying them.

Why debt service keeps running when income does not

Debt service and property taxes are fixed obligations that continue when a property is under construction, partly vacant or otherwise earning less. Any gap between income and those obligations is funded from reserves or interest carry, or from new equity, so the review identifies which source applies.

A cap rate is one year of net operating income divided by price. It does not measure yield, return or IRR over a hold. Comparing it with the interest rate still tells a reader something: when the cap rate sits at or below the cost of debt, the investment depends on growth in net operating income, through rent increases or expense reductions.

The size of the gap depends on the debt ratio, because interest applies to the loan while the cap rate applies to the whole price. A deal bought at a 3.5% cap rate with borrowing costs of 5% or more can leave debt payments above property cash flow unless rents grow substantially. A lower debt ratio narrows that gap and a higher one widens it.

Pricing a deal on projected growth therefore needs a second case that holds income flat at the starting level and shows who pays the difference.

“Many costs associated with a real estate investment, such as debt service and real estate taxes, are not reduced even when a property is not fully constructed or occupied, or other circumstances cause a reduction in income from the investment.”

Maturity, bridge timelines and the refinancing gap

Coverage describes income against scheduled payments during a period. Maturity asks a different question: whether a replacement loan will be large enough to repay the balance. A property can cover every payment and still face a shortfall on the payoff date.

The refinancing test has three steps. First, the property is valued at an assumed cap rate on the income a lender will underwrite. Next, the assumed loan to value ratio gives the replacement proceeds. Last, proceeds are subtracted from the balance due, and fees and closing costs add to the gap.

Lenders sizing at lower loan to value ratios build a larger margin for error when volatile rates make value harder to pin down. That margin shrinks the proceeds side of the test, so a deal underwritten to an older, higher ratio carries a refinancing gap even when income is on plan.

Bridge debt adds a clock. When an operator has only 24 or 36 months to reposition a property before rates reset, the business plan and the loan term are the same risk. Income that has to arrive before the deadline is a dependency, and the schedule of that income is a diligence item.

Rate moves also reach value through two channels. Lower short-term rates may ease floating debt costs, while higher long-term rates press cap rates upward because real estate competes for capital with bonds. A refinancing case that assumes cheaper floating debt and a lower cap rate together has stacked two favorable changes.

Worked example: a $12 million floating-rate loan tested for a rate rise and an income dip

This hypothetical deal is a stabilized property bought for $20,000,000 with a 60% loan. Both cases use the same capital, the same fee assumption of zero and the same one-year operating period. The loan is interest only and floating, so principal at maturity equals principal at closing.

Loan: $20,000,000 multiplied by 60% equals $12,000,000. Original equity: $20,000,000 minus $12,000,000 equals $8,000,000. Net operating income in the base case is $1,200,000, a 6% going-in cap rate on price.

Base case: the rate is 5%. Annual interest is $12,000,000 multiplied by 5%, or $600,000. Coverage is $1,200,000 divided by $600,000, or 2x. Cash after debt service is $1,200,000 minus $600,000, or $600,000, which is $600,000 divided by $8,000,000, or 7.5% of original equity. Debt yield is $1,200,000 divided by $12,000,000, or 10%.

Base refinancing: value at a 6% cap rate is $1,200,000 divided by 6%, or $20,000,000. Replacement proceeds at 60% are $20,000,000 multiplied by 60%, or $12,000,000. The shortfall is $12,000,000 minus $12,000,000, or $0.

Stress case: the rate floats to 8% and net operating income falls 4%. The decline is $1,200,000 multiplied by 4%, or $48,000, leaving $1,200,000 minus $48,000, or $1,152,000. Annual interest is $12,000,000 multiplied by 8%, or $960,000. Coverage is $1,152,000 divided by $960,000, or 1.2x. Cash after debt service is $1,152,000 minus $960,000, or $192,000, which is $192,000 divided by $8,000,000, or 2.4% of original equity. Debt yield is $1,152,000 divided by $12,000,000, or 9.6%.

Stress refinancing: the cap rate widens to 7.5%. Value is $1,152,000 divided by 7.5%, or $15,360,000. Proceeds at 60% are $15,360,000 multiplied by 60%, or $9,216,000. The shortfall is $12,000,000 minus $9,216,000, or $2,784,000. Against original equity of $8,000,000 that is 34.8%, new equity required to repay the loan on top of the thin $192,000 of annual cash.

The property still covers its interest in the stress case, so a coverage test alone would pass it. The maturity test fails it, because three inputs moved against the borrower together. The rate went up, income went down and the cap rate widened.

Common mistakes in reading debt risk

Treating a passing coverage ratio as a refinancing conclusion mixes two denominators. Coverage divides income by scheduled payments. The maturity obligation is the outstanding principal, and replacement proceeds depend on value and the lender’s sizing, so the two tests can give opposite answers on the same loan.

A cap rate is one year of net operating income over price, before any debt service, and it does not measure yield, return or IRR on equity. Equity cash flow depends on the interest bill and any principal payments, and on the equity actually invested.

Using stabilized income for the whole holding period removes the execution phase from the analysis. Payments on bridge debt start at closing, while the income that supports them arrives later. Comparing current income with stabilized income shows how much income growth the plan requires.

Counting a future rate decline as existing cash flow turns a scenario into a starting assumption. Cash flow after stabilization can be computed at the stated borrowing cost, and lower rates can then be treated as an upside case. A deal that works only when rates fall gets its returns from the rate move.

Stacking favorable changes in a refinancing case overstates proceeds. A lower floating-rate and a lower cap rate are separate assumptions, and long-term rates that stay high can push cap rates up while short-term costs fall. Each input needs its own justification.

Reviewing the property loan alone leaves out vehicle-level facilities and any pledged collateral, so the cash that reaches investors is overstated.

Debt diligence questions that expose the cash requirement

Which obligations sit at the property and which sit at the investment vehicle? The answer shows whether property cash faces another claim before it reaches investors.

What collateral supports each loan or facility? Collateral defines which assets answer for which obligations.

Which income definition and payment schedule produce the reported coverage ratio? A ratio that cannot be reproduced from the loan documents is only a label.

How does debt service change if the floating-rate rises with principal held constant? That calculation isolates the cash cost of rate exposure before any change in income.

What funds fixed obligations while occupancy or construction is incomplete? Debt service and taxes continue, so reserves or interest carry pay the difference, or new equity does.

How does the operating timeline line up with maturity? The comparison shows whether repayment depends on income that has not yet been earned.

What replacement proceeds follow from each stated value and loan to value assumption? The result sets the expected refinancing against the principal that falls due.

What equity is available to cover a shortfall, and from whom? A gap of any size needs a named source.