Key Takeaways
- Every CRE deal has a capital stack — the layered structure of debt and equity that funds the acquisition. Where your investment sits in that stack determines your risk, your return, and your payment priority
- Senior debt (typically 60–75% of total capital) gets paid first and carries the lowest risk. Common equity gets paid last but captures the upside. The layers in between — mezzanine debt and preferred equity — offer intermediate risk-return profiles
- Waterfall structures define how profits distribute among investors and the sponsor. Understanding the promote, hurdles, and split ratios is critical for evaluating any real estate investment
When someone says they "invested in a real estate deal," that phrase hides an enormous amount of structural complexity. A $10 million multifamily acquisition doesn't come from a single check. It comes from multiple layers of capital, each with different rights, different returns, and different claims on the property's income and sale proceeds.
That layered structure is the capital stack. It's the single most important thing to understand before investing in any commercial real estate deal, because it determines exactly where your money sits — who gets paid before you, who gets paid after you, and what happens if things don't go as planned.
The Four Layers of a Capital Stack
A typical capital stack has four layers, ordered from lowest risk (bottom) to highest risk (top). Each layer has a fundamentally different relationship to the deal's cash flow and a different risk-return profile.
Capital Stack — Typical $10M Multifamily Acquisition
Senior Debt: The Foundation
Senior debt is the base of the capital stack — typically a first-lien mortgage from a bank, credit union, or agency lender (Fannie Mae, Freddie Mac). It usually represents 60–75% of the total capital needed for an acquisition, which is why the loan-to-value ratioLTV (Loan-to-Value) is the ratio of the loan amount to the property's appraised value. A 65% LTV means the lender is financing 65% of the property's value. Lenders typically cap LTV at 75–80% for stabilized commercial properties. is such a critical underwriting metric.
Because the senior lender has the first claim on the property — secured by a deed of trust or mortgage — they take the least risk. If the deal goes sideways and the property is sold at a loss, the senior lender gets repaid before anyone else. In a foreclosure scenario, the senior lender takes ownership of the property.
For the borrower, senior debt is the cheapest capital in the stack. That's not a coincidence — the low cost reflects the low risk. The lender's return is fixed and contractual: they get their interest payments and principal back regardless of how well the property performs, as long as the borrower can service the debt.
This is why how to structure senior debt matters so much. The interest rate, amortization schedule, loan term, and prepayment provisions on the senior debt affect every other layer of the capital stack. Get the senior debt wrong, and the entire deal can unravel — as many 2021-vintage operators learned when bridge loans matured into a 6%+ rate environment.
Mezzanine Debt: The Middle Layer
Mezzanine debt sits between the senior loan and the equity — it's a subordinate loan that gets repaid after the senior lender but before equity holders. In practice, mezzanine lenders are taking a calculated risk: they receive a higher interest rate (typically 10–14%) because their position is less secure than senior debt.
Structurally, mezzanine debt is usually secured by a pledge of the borrower's ownership interest in the property-owning entity — not by a lien on the property itself. This distinction matters in a default scenario: while the senior lender can foreclose on the property, the mezzanine lender can take over the borrowing entity and its ownership position.
Not every deal needs mezzanine debt. It's most commonly used when: (1) the senior lender's LTV is capped below what the deal requires — for example, a bank will only go to 65% LTV but the sponsor needs 80% leverage, (2) the sponsor wants to reduce the total equity required to close, increasing the levered return on equity, or (3) a value-add deal requires more capital for renovations than the senior lender will provide.
The cost of mezzanine debt is significant — at 12% interest, a $1M mezzanine loan costs $120,000 per year in debt service. That expense reduces cash flow to equity holders. Mezzanine makes sense only when the incremental leverage generates returns that exceed the cost of the mezzanine capital.
Conservative operators generally avoid mezzanine debt. They prefer conservative leverage (60–70% LTV) with senior debt only, funding the remaining equity from our capital base and investor commitments. The interest cost savings and reduced complexity typically outweigh the higher per-dollar return that additional leverage would provide.
Preferred Equity: Priority Capital, Capped Upside
Preferred equity is a hybrid position — it's equity (not debt), but it behaves like debt in one important way: it receives a fixed priority return before common equity sees any distributions. A typical preferred equity position pays 8–12% annually, and that return must be fully satisfied before the common equity holders receive a dollar.
Unlike debt, preferred equity doesn't create a foreclosure risk. If the deal can't service the preferred return, the preferred equity holders don't force a default — they just continue accruing their unpaid return. However, many preferred equity agreements include provisions that shift more ownership or control to the preferred holder if returns are missed for an extended period.
Preferred equity is the "I want real estate exposure but I want to sleep at night" position. You give up the home-run upside in exchange for priority treatment and a more predictable return. It's not for everyone — but it has a clear role in a diversified portfolio.
The trade-off is clear: preferred equity has more downside protection than common equity (it gets paid first), but its upside is usually capped at the preferred return rate. When a deal performs exceptionally well — say, a value-add renovation that doubles NOI and generates a 25% IRR on common equity — the preferred equity holders still get their 8–10% return and nothing more.
Common Equity: Where the Upside Lives
Common equity sits at the top of the capital stack. It gets paid last. It absorbs the first losses. And it captures all the upside once every layer below it has been satisfied. Common equity is where the GP (the deal sponsor) and LP (passive investors) typically invest.
In most syndicated real estate deals, the common equity is split between the GP's contribution (typically 5–20% of total equity) and LP contributions (the remaining 80–95%). Together, this common equity might represent 20–35% of the total capital stack.
Worked Example — $10M Deal Returns by Stack Position
Assume a 5-year hold, $10M acquisition, $12.5M sale, $3.6M in total NOI collected over the hold:
Total Capital Return: $12,500,000 (sale) + $3,600,000 (NOI) = $16,100,000
Less Senior Debt Payoff: −$6,500,000
Less Cumulative Debt Service (5 yrs): −$2,275,000
Less Mezz Payoff + Interest: −$1,600,000
Less Preferred Equity + Return: −$ 750,000
Available to Common Equity: $4,975,000
Common Equity Invested: $2,000,000
Equity Multiple: 2.49x · IRR: ~20%
This is why common equity holders are willing to accept the highest risk — the returns can be substantial when the deal performs. A 2.49x equity multiple means the investor got back $2.49 for every dollar invested. But if the property sold for $8M instead of $12.5M? Common equity would be nearly wiped out, while the senior lender would still receive full repayment.
The Waterfall: How Profits Actually Flow
Within the common equity itself, profits don't just split evenly between the GP and LPs. They flow through a waterfall structureA waterfall structure distributes profits in sequential tiers. Each tier has a return threshold (hurdle) and a defined split ratio between investors and the sponsor. Capital flows to the next tier only after the current tier's threshold is fully satisfied. — a tiered system that rewards the sponsor for exceeding return targets.
A common waterfall structure looks like this:
| Tier | Hurdle | LP Split | GP Split | Purpose |
|---|---|---|---|---|
| 1 — Return of Capital | — | 100% | 0% | LPs get their invested capital back first |
| 2 — Preferred Return | 8% IRR | 100% | 0% | LPs earn 8% annualized before GP shares in profits |
| 3 — GP Catch-Up | 8–12% IRR | 50% | 50% | GP "catches up" on profits to reach their target share |
| 4 — Above Hurdle | 12%+ IRR | 70% | 30% | GP earns larger promote for exceeding return targets |
The GP's share above the preferred return — the 30% in Tier 4 — is called the promote. It's the primary way sponsors earn outsized returns in real estate: not from management fees, but from actually delivering superior performance. This is why understanding how returns are calculated is so important. A deal promising "20% IRR" means very different things depending on where you sit in the stack and how the waterfall is structured.
Interactive — Waterfall Distribution Calculator
What Happens When Things Go Wrong
The capital stack is designed for downside scenarios as much as upside ones. When a deal underperforms, losses flow from the top down — the reverse of how profits distribute:
Common equity absorbs the first loss. If the property sells for less than what's owed to debt holders and preferred equity, common equity holders can lose their entire investment. In the worst deals from the 2021–2022 vintage, this is exactly what happened: properties that were overleveraged and purchased at peak pricing left common equity investors with total losses while senior lenders were made whole.
Preferred equity absorbs the second loss. If losses exceed the common equity, preferred equity holders begin losing capital. Their priority return doesn't help in a scenario where the entire deal is underwater.
Mezzanine debt is next. Because it's subordinate to the senior loan, the mezzanine lender can't force repayment until the senior lender is satisfied.
Senior debt is the last to take a loss. With a first-lien position and typically conservative LTV ratios, the senior lender is protected unless the property loses 25–40% of its value — rare in multifamily, more common in distressed office or retail.
The most painful capital stack lessons in recent memory come from deals closed in 2021–2022. Here's a typical scenario: An operator acquired a 100-unit multifamily building for $15M using a floating-rate bridge loan at 80% LTV ($12M) and $3M in equity. The business plan assumed a 2-year renovation and refinance into permanent debt at 3.5%.
When rates moved to 6.5%, the refinance math broke. The property's NOI couldn't support debt service at the higher rate. The bridge loan matured. The lender offered a 12-month extension at a 2-point rate increase. Suddenly, the operator needed an additional $600K in annual debt service payments — money that was supposed to be investor distributions.
Capital calls went out. Some LPs refused. The GP couldn't cover the shortfall. The property was sold at $12.5M — a $2.5M loss. The senior lender received $12M (full repayment). The remaining $500K went to closing costs. Common equity received nothing. Total loss to investors: $3M, or 100% of invested capital.
The building wasn't bad. The location wasn't bad. The renovation plan wasn't bad. The capital structure was bad. Too much leverage, floating-rate exposure, and a business plan that required macro cooperation. That's the lesson: the capital stack determines outcomes more than the property itself.
How We Structure Our Capital Stacks
A conservative capital stack philosophy prioritizes capital preservation. Here's how disciplined operators typically structure deals:
60–70% senior debt. We target agency debt (Fannie/Freddie) or local bank relationships with fixed rates or rate caps. No floating-rate exposure without a hedge. We underwrite to a minimum 1.40x DSCR, which gives us a meaningful buffer if operating performance comes in below projections.
No mezzanine debt. We've never used mezzanine debt on a deal, and we don't plan to start. The cost of that capital — 10–14% annually — eats into returns and adds complexity. If we can't make a deal work with 65% senior debt and 35% equity, the deal isn't priced right.
Meaningful GP co-investment. We invest their own capital alongside investors in every deal. That's not a token amount — our GP co-invest typically represents 10–15% of total equity. When we're evaluating the capital stack, we're evaluating our own risk, not just investor risk.
Transparent waterfall structures. Conservative deals use straightforward, industry-standard waterfall structures with an 8% preferred return to LPs, followed by a catch-up and promote. We don't use complex promote structures that obscure the true fee burden — because fee transparency is a non-negotiable.
The goal isn't to engineer the most creative capital stack — it's to build the most resilient one. A deal that can withstand a rate shock, an occupancy dip, and a renovation delay simultaneously is a deal that protects capital. That's what we build toward.
What Investors Should Ask About Any Capital Stack
Before investing in any commercial real estate deal, ask these questions about the capital structure:
- What percentage of the capital stack is debt? Higher leverage amplifies both returns and risk. Above 75% LTV on an acquisition, the margin of safety narrows significantly.
- Is the senior debt fixed or floating? Floating-rate debt without a rate cap is a macro bet. If the sponsor can't tell you exactly what the debt service will be for the first 3–5 years, that's a red flag.
- Where does my investment sit? Know whether you're in a preferred equity position, common equity LP position, or a blended structure. The answer determines your payment priority.
- What are the waterfall terms? Understand the preferred return, hurdle rates, catch-up provisions, and promote percentages. A 30% GP promote above a 6% pref is very different from a 20% promote above a 10% pref.
- How much is the GP co-investing? A sponsor who puts 1% of equity into their own deal has very different incentives than one who puts 15%. The GP's skin in the game is a direct indicator of their confidence in the capital structure.
- What happens in a downside scenario? Ask the sponsor to show you what returns look like at 80% of projected NOI, or if the exit cap rate expands by 50 basis points. If the deal produces negative returns in a moderate downside case, the capital stack is too aggressive.
Capital stacks aren't just finance theory — they're the architecture that determines whether an investment protects your capital or puts it at risk. Understanding where your money sits in that structure is the first step toward making informed investment decisions.