Priority
Cash flow generally moves from senior positions downward, while repayment priority determines who is paid first.
INSIDE THE CAPITAL STACK
Inside the Capital Stack: Why Senior Lenders Care About Every Layer of Capital
A practical look at repayment priority, global debt-service capacity, control rights, and enterprise CRE credit risk.
CRE Credit & Underwriting · 10-minute read
Executive Summary
The capital stack is more than a list of financing sources. It determines payment priority, loss exposure, control rights, and the transaction’s ability to withstand stress.
- A first mortgage does not isolate a senior lender from risks created by subordinate debt.
- Global debt service coverage provides a more complete view of the property’s total contractual debt burden.
- Every additional debt or equity layer can change cash flow, refinancing flexibility, sponsor incentives, and control.
- The strongest capital structure is not necessarily the one with the highest leverage.
Key Takeaways
Loss Absorption
Losses generally move in the opposite direction, with common equity absorbing losses before preferred equity, subordinate debt, and senior debt.
Governance
Every additional capital layer can change cash flow, refinancing flexibility, control rights, and the transaction’s overall risk profile.
A Deal Can Be Fully Funded — And Still Be Poorly Structured
One of the most common ways commercial real estate professionals evaluate a transaction is by reviewing its sources and uses of funds. If the numbers balance, the capital stack appears complete.
But completing the capital stack and creating a sound capital structure are two very different things.
A transaction may include a senior mortgage, mezzanine financing, preferred equity, and common equity. On paper, every dollar needed to close may be accounted for.
The more important questions are these:
- Can the property’s cash flow support all of those obligations?
- What happens if lease-up or stabilization takes longer than expected?
- Who absorbs losses first?
- Who controls key decisions if the business plan falls behind?
- How much flexibility remains if refinancing proceeds are lower than projected?
Those questions often determine whether a project remains resilient when market conditions become less forgiving.
Over my career as a commercial real estate lender, Enterprise CRE Credit Risk Executive, and Federal Reserve examiner, I learned that the capital stack is much more than a financing diagram.
It is a framework for understanding risk, repayment priority, incentives, flexibility, and control.
What Is the CRE Capital Stack?
The capital stack is the combination of debt and equity used to acquire, develop, recapitalize, or refinance a commercial real estate asset.
A conventional capital stack may include:
- Senior mortgage debt
- Subordinate or mezzanine debt
- Preferred equity
- Common equity
Each layer carries a different claim on the property’s cash flow and value. Each also carries a different expected return, level of downside exposure, and set of contractual rights.
The senior mortgage generally occupies the highest repayment position and carries the lowest relative risk within the stack. Common equity sits at the bottom, absorbs losses first, and receives the residual upside if the transaction performs well.
The structure can become more complex in practice, but this four-layer framework provides a useful starting point.
Cash Flows Down. Losses Flow Up.
One of the clearest ways to understand the capital stack is to examine what happens when a property generates cash — and what happens when value declines.
When a property performs as expected, cash flow generally moves from the top of the stack downward.
Property income first pays operating expenses. Senior debt service follows. Subordinate debt obligations may come next, followed by preferred equity distributions. Whatever remains is available to common equity.
Losses generally move in the opposite direction.
Common equity absorbs losses first. Preferred equity is exposed next. Subordinate debt becomes vulnerable after the equity layers are impaired. Only after those lower positions have been exhausted does the senior lender begin experiencing principal loss.
This leads to a useful shorthand:
Cash flow generally moves downward through the stack. Losses are generally absorbed upward.
That hierarchy explains repayment priority. But it does not tell the entire credit story.
A senior lender’s first-lien position does not make the capital beneath it irrelevant.
The Senior Mortgage Is Only Part of the Story
Because senior mortgage debt holds the first lien on the real estate, some borrowers assume that the senior lender should be concerned only with its own loan.
That was never my view.
A first mortgage protects the lender’s legal priority. It does not isolate the lender from changes in the transaction’s overall economics.
Additional debt can increase the property’s fixed payment burden. It can reduce excess cash flow, weaken sponsor flexibility, complicate refinancing, and introduce another capital provider with its own approval rights and remedies.
The senior lender may still stand first in line. But the probability of financial stress can change materially when another debt layer is introduced.
That is why a disciplined senior lender evaluates more than lien position.
It evaluates whether the complete financing structure remains supportable.
PRACTITIONER PERSPECTIVE
Why We Required Approval Before Subordinate Debt Could Be Added
During my time as the Enterprise Commercial Real Estate Credit Risk Executive, I focused on an important principle:
A senior lender’s lien position does not eliminate the risk created by debt placed behind it.
Commercial real estate transactions do not remain static after closing. Sponsors refinance, recapitalize, add investors, modify business plans, and sometimes seek additional debt.
For that reason, I ensured that our loan documentation required our approval before subordinate or mezzanine debt could be added behind our first mortgage.
The approval right was only the first control.
I also developed credit guidelines requiring the proposed subordinate debt to be included in a global debt service coverage analysis. Our credit-risk model likewise required all debt obligations to be reflected in its assessment of the transaction.
We did not evaluate only the payments owed to our institution.
We wanted the underwriting and risk assessment to reflect the transaction as it actually existed.
If another debt provider had a contractual claim on property cash flow, that obligation belonged in the analysis.
The purpose was not to prohibit subordinate financing. Mezzanine debt can serve a legitimate purpose and may be appropriate for a particular transaction.
The purpose was to determine whether the revised capital structure remained supportable — and whether the additional debt materially changed the risk of the senior loan.
PRACTICAL EXAMPLE
How Subordinate Debt Can Change the Risk Profile
A senior mortgage may appear well covered when evaluated on its own. But once subordinate debt is added, the property’s total contractual debt burden may increase materially — even though the property itself has not changed.
| Measure | Senior Debt Only | Senior + Subordinate Debt |
|---|---|---|
| Property NOI | $1,000,000 | $1,000,000 |
| Senior debt service | $700,000 | $700,000 |
| Subordinate debt service | — | $150,000 |
| Total debt service | $700,000 | $850,000 |
| Debt service coverage | 1.43x | 1.18x |
Measured only against the first mortgage, the property appears to have a meaningful cash-flow cushion.
Once subordinate debt service is included, coverage falls from 1.43x to 1.18x.
Occupancy, rents, and NOI are unchanged. What changed is the amount of cash flow committed to debt service — leaving less room to absorb volatility, fund shortfalls, or support refinancing.
The property did not change. The capital structure did.
Lien priority shows where the senior lender stands after a default. Global DSCR helps show how financial pressure may develop before one occurs.
Why the Credit-Risk Model Included All Debt
The requirement to include all debt in the credit-risk model was equally important.
A model should assess the economic reality of the transaction — not an incomplete version based only on the senior lender’s direct exposure.
Depending on the model’s design, additional debt may affect:
- total leverage;
- cash-flow coverage;
- refinancing dependence;
- sponsor financial flexibility;
- downside sensitivity;
- probability of default; and
- the resulting risk assessment or risk grade.
The exact mechanics may vary from one financial institution to another. The governance principle should not.
If the transaction has changed, the risk analysis should change with it.
Otherwise, the institution may continue relying on an assessment created for a capital structure that no longer exists.
Mezzanine Debt Is Not Inherently Good or Bad
Subordinate and mezzanine financing can serve legitimate purposes.
It may help close a funding gap, preserve sponsor liquidity, finance improvements, or reduce the amount of common equity required.
When the business plan performs well, additional leverage can also increase the return earned by common equity.
The appropriate question is not whether mezzanine debt is good or bad.
The better question is:
How does the additional debt change the economics, flexibility, and downside risk of the transaction?
A disciplined review should consider:
- total contractual debt service;
- combined leverage;
- maturity alignment;
- refinancing assumptions;
- sponsor liquidity;
- cure and control rights;
- payment-blocking provisions;
- intercreditor terms; and
- the property’s ability to withstand weaker performance.
The financing label alone does not answer those questions.
The documents and economics do.
Preferred Equity May Behave Like Debt
Preferred equity occupies an important place in many commercial real estate capital structures.
Legally, it is equity. Economically, however, it may behave more like subordinate debt.
That depends on the terms.
Preferred equity may include:
- a fixed or accruing preferred return;
- priority distributions;
- redemption requirements;
- distribution blocks;
- cash sweeps;
- major-decision approval rights;
- sponsor-removal provisions; and
- control remedies.
Those rights may be appropriate given the investor’s position.
But they may also reduce the sponsor’s flexibility and create pressure similar to another contractual debt layer.
A transaction should therefore not be evaluated solely by whether a capital source is labeled debt or equity.
The terms matter more than the label.
Common Equity Bears the First Loss — And Receives the Residual Upside
Common equity sits at the bottom of the capital stack.
It generally absorbs losses first. It may also be required to fund:
- cost overruns;
- operating shortfalls;
- leasing costs;
- capital calls;
- debt-service deficiencies;
- extension requirements; and
- refinance gaps.
In exchange for bearing that risk, common equity receives the residual cash flow and value after the claims above it have been satisfied.
When the business plan works, leverage can materially increase the common-equity return.
When the business plan falls short, leverage can accelerate the loss.
That is why a projected equity return should never be reviewed without examining the assumptions that produce it.
Control Rights Matter as Much as Pricing
Sponsors often compare capital sources primarily by price.
They look at the interest rate, preferred return, origination fee, exit fee, or required equity contribution.
Those economics matter.
But control rights may matter just as much — particularly when a project falls behind plan.
Capital providers may negotiate rights involving:
- budgets;
- leases;
- property management;
- additional debt;
- asset sales;
- refinancing;
- distributions;
- capital expenditures;
- business-plan changes;
- sponsor removal; and
- enforcement remedies.
The least expensive capital may become highly restrictive if its documents remove flexibility at the exact moment flexibility is most valuable.
A sound comparison therefore considers both:
- the economic cost of capital; and
- the operational and governance consequences of accepting it.
What Happens When the Business Plan Falls Behind?
Capital structures are rarely tested on closing day.
They are tested when the original business plan no longer holds.
That may happen because:
- construction takes longer than expected;
- costs exceed budget;
- lease-up slows;
- rents fall below underwriting;
- concessions increase;
- operating expenses rise;
- interest carry exceeds the reserve;
- permanent financing produces fewer proceeds; or
- maturity arrives before stabilization.
At that point, each layer may respond differently.
The senior lender may impose cash management, additional reserves, covenant restrictions, or restructuring conditions.
The mezzanine lender may exercise cure rights, block certain actions, or seek control of the borrowing entity.
The preferred-equity investor may accrue additional return, block distributions, enforce redemption rights, or exercise governance remedies.
Common equity may face a capital call, dilution, loss of control, or complete loss of its investment.
This is why the capital stack must be evaluated as an interconnected system.
The rights and remedies of one layer can affect the options available to every other participant.
Why Refinance Risk Is a Capital-Stack Issue
At maturity, the property must generate enough refinance proceeds or sale proceeds to repay the outstanding obligations.
If higher interest rates, weaker NOI, lower valuations, or more conservative underwriting reduce available senior debt, a financing gap can emerge.
The senior mortgage may be repayable while subordinate debt remains outstanding.
Preferred equity may continue accruing.
Common equity may need to contribute additional capital simply to preserve ownership.
That creates an important connection between capital-market conditions and capital-stack durability:
The rate stack helps determine how much debt the property can support. The capital stack determines who bears the shortfall when that debt is not enough.
This is why sponsors should model the exit at more than one interest rate, valuation, and NOI level.
A capital structure that works only under the original refinance assumption may not be resilient enough for a multi-year CRE investment.
What Sponsors and Investors Should Ask Before Accepting Capital
Before adding another layer, decision-makers should examine more than the stated price.
Economics
- What is the true all-in cost?
- Does the return accrue if it is not paid currently?
- Are there exit fees, minimum returns, or extension costs?
- What happens if the investment remains outstanding longer than expected?
Payment Priority
- Who must be paid first?
- Which payments may be deferred?
- Does unpaid return compound?
- What cash flow remains for the sponsor?
Control
- Which decisions require approval?
- Who controls property cash?
- What events trigger additional rights?
- Can the sponsor be removed or diluted?
Downside Protection
- Who funds operating shortfalls or cost overruns?
- Who cures a senior-loan default?
- Is additional capital permitted?
- What happens when one party will not contribute?
Exit Risk
- Is there a mandatory redemption date?
- Can a capital provider force a sale?
- Can an investor block a refinancing?
- What happens if proceeds are insufficient to repay the entire stack?
These questions often reveal risks that are not visible in a sources-and-uses schedule.
LAKEROCK DECISION LENS
Four Ways to Read the Capital Stack
A capital structure should be evaluated from more than one perspective. The strongest decisions connect property economics, portfolio risk, governance, and capital-market conditions before the transaction becomes harder to manage.
01
Property & Transaction Economics
Can the property support every contractual payment, return requirement, reserve, and capital need throughout the business plan?
02
Portfolio & Concentration Risk
How does the complete capital structure affect leverage, downside resilience, sponsor flexibility, and the lender’s broader CRE exposure?
03
Governance & Decision Defensibility
Are approvals, assumptions, intercreditor terms, risk conclusions, and downside cases clearly documented and supportable?
04
Rates, Liquidity & Balance Sheet Conditions
How could changes in interest rates, liquidity, capital availability, valuation, or refinancing conditions weaken the structure?
A transaction may satisfy the senior lender’s minimum underwriting standards and still carry a fragile overall capital structure.
That is why the analysis cannot stop at the first mortgage.
LakeRock Closing View
The capital stack is not simply a list of financing sources.
It determines who gets paid first, who absorbs losses first, who controls important decisions, and how resilient a transaction remains when conditions change.
During my years as an Enterprise CRE Credit Risk Executive, we required approval before subordinate debt could be added behind our first mortgage. We required the added debt to be included in a global DSCR analysis. And our credit-risk model required all debt to be reflected in its assessment.
Those controls were built around a straightforward principle:
A senior lender is not merely underwriting a first mortgage. It is underwriting the sustainability of the entire financing structure.
The strongest capital structure is not necessarily the one with the highest leverage, the lowest initial equity contribution, or the most creative layering.
It is the one the property can support through realistic operating conditions, market volatility, and a credible downside case.
A deal closes with sources and uses. It survives through structure, liquidity, and discipline.
ABOUT THE AUTHOR
Managing Partner, LakeRock Capital
Derek P. Pollard is the Managing Partner of LakeRock Capital and a former enterprise commercial real estate credit-risk executive, CRE lender, workout officer, and Federal Reserve examiner. His work focuses on CRE underwriting, portfolio risk, capital structure, governance, development feasibility, and institutional decision-making.