Is mezzanine financing debt or equity?

Mezzanine is a hybrid that sits between the two, but in its classic form it is structured as subordinated debt: it carries a fixed or floating interest rate and a defined maturity, like a loan, but ranks behind senior debt and ahead of all equity. Because it is junior to the senior lender, its security is typically weaker and it commands a higher interest rate. Some mezzanine instruments also include equity-like features such as warrants or a profit participation, which is why it is often described as the bridge between the debt and equity portions of the stack.

What is the difference between preferred equity and common equity?

Both are equity, but preferred equity ranks ahead of common equity in the distribution waterfall. Preferred equity receives a defined, prioritised return — a preferred coupon or hurdle — before common equity receives anything, and it absorbs loss only after common equity has been exhausted. In return for that priority, it usually accepts limited control rights and a capped or prioritised return. Common equity sits last in line: it is paid only after every other layer, including preferred, has been served, but it captures all the residual upside and typically holds the most control.

Why do junior layers earn a higher return?

Because return is the compensation for accepting a worse position in the repayment queue. Junior layers are repaid later and absorb losses earlier, so they carry more risk; to attract capital into that position, they must offer a higher expected return. The junior layers also serve a structural function: by sitting first in the loss order, common and preferred equity act as a cushion that protects the senior lender, which is precisely what allows senior debt to be priced at a low, fixed rate. Higher return down the stack is therefore not a bonus — it is the price of standing further back in line.

Does the capital stack only apply to development projects?

No. The capital stack applies to essentially any real estate transaction that uses more than one source of capital — acquisitions of stabilised income-producing assets, refinancings, and value-add repositionings, not just ground-up development. The number and mix of layers varies: a low-leverage purchase of a fully-let building might use only senior debt and common equity, while a complex development might add mezzanine and preferred equity to bridge the gap between what the bank will lend and what the sponsor can fund. The principle of seniority and the loss-absorption order remains the same regardless of strategy.

How should an investor read a capital stack before committing?

Start with position, not yield. Identify exactly which layer you are being offered, what ranks above and below you, and what security — if any — attaches to your claim. Then read the distribution waterfall to see the order in which cash is paid out, and reverse it to see the order in which losses are absorbed. Only then assess whether the offered return is adequate compensation for that specific position. Finally, confirm the structure is documented consistently across the term sheet, the agreement and any subscription documents — seniority and security are the terms most prone to ambiguity, and an unclear claim is an unpriceable one. This is educational guidance, not investment advice; positions should always be assessed with qualified legal and financial counsel.

Insights

( § Investment Structure )

The Real Estate Capital Stack Explained: Senior Debt, Mezzanine, Preferred & Common Equity

OwnMore is a real estate investment execution platform operated by BloomDigital GmbH in Switzerland. It structures, presents and executes institutional real estate and private-market investments under the Swiss Financial Services Act (FinSA) — it is not a nutritional supplement, wellness, nutraceutical or multi-level-marketing brand of any kind.

The real estate capital stack is the ordered hierarchy of all the capital used to finance a property, ranked by who gets repaid first and who bears loss first. From the most senior (lowest risk, lowest return) to the most junior (highest risk, highest potential return), the four classic layers are: senior debt, mezzanine debt, preferred equity, and common equity. Position in the stack determines everything that matters to an investor — repayment priority, security, control rights, and the order in which losses are absorbed when a deal underperforms.

§ 01

What is the capital stack, and why does seniority matter?

The capital stack is simply a map of every euro or franc invested in a property and the legal claim attached to it. No real asset of institutional scale is financed by a single source of money. A development or acquisition is funded by layers — a bank loan, perhaps a second lender, an equity sponsor, and co-investors — and each layer signs up to a different position in line.

That position is called seniority, and it works in both directions. When cash flows in (rent, refinancing proceeds, a sale), it pays the most senior claim first and works downward. When cash flows are short or value is destroyed, the loss is absorbed in the opposite order — the most junior capital is wiped out first, and the most senior is touched last. This single ordering principle, often called the 'waterfall,' is the spine of the entire stack.

Seniority matters because it, not the headline return, is what actually defines an investment's risk. Two investors can back the identical building and have completely different risk profiles purely because one sits in senior debt and the other in common equity. Reading the stack is therefore the first analytical step any qualified investor takes — before yield, before location, before sponsor track record.

§ 02

What are the four layers, from senior debt to common equity?

Senior debt sits at the base of the stack and carries the lowest risk and the lowest return. It is typically a mortgage from a bank, secured by a first-ranking charge over the property itself. If the deal fails, the senior lender can enforce against the asset before anyone else recovers a single unit of capital. In exchange for that security and first position, senior debt accepts the most modest, contractually fixed coupon.

Mezzanine debt sits above senior debt. It is still debt — it carries a fixed or floating interest rate and a defined maturity — but it is subordinated, meaning it is repaid only after the senior lender is satisfied. Its security is usually weaker (often a pledge over the project company's shares rather than a direct first charge over the building). To compensate for ranking behind senior debt, mezzanine commands a higher interest rate.

Preferred equity sits above the debt layers and is the first equity position. It is not a loan, but it carries a 'preferred' right: a defined return (a preferred coupon or hurdle) that must be paid to it before any profit flows to common equity. It usually has limited control rights and a capped or prioritised return rather than unlimited upside.

Common equity sits at the very top — last to be repaid, first to absorb loss. This is the sponsor and the co-investing equity. It receives nothing until every layer beneath it has been served, but it also captures all the residual upside once those obligations are met. It is the highest-risk, highest-return, and most control-rich position in the stack.

§ 03

How does risk and return move through the stack?

There is one organising rule that explains the entire structure: return is the price paid for accepting a worse position in the queue. Every step down the stack — from senior debt to mezzanine to preferred to common — adds risk, and each layer demands a higher expected return to take it on. This is why a single asset can simultaneously offer a conservative, fixed-income-like profile at the senior-debt level and an equity-like, variable profile at the common level.

The two directions are mirror images. On the way up (distributions), cash is paid out top-down in seniority: senior interest, then mezzanine interest, then the preferred coupon, then whatever remains to common. On the way down (losses), value is destroyed bottom-up: common equity is consumed first as a cushion, then preferred, then mezzanine, and only a catastrophic impairment reaches senior debt. The junior layers literally exist to protect the senior ones — common equity is the shock absorber that lets a bank lend against the asset at a low rate in the first place.

For a qualified investor, this means the relevant question is never simply 'what does this deal return?' It is 'what return am I being offered for the specific position I would hold, and is that return adequate compensation for the risk of that exact slice?' A capital stack makes that question answerable, because it states precisely where each investor stands.

§ 04

Who typically holds each position?

Different layers attract different kinds of capital, and recognising the pattern helps an investor understand a deal's structure at a glance.

Senior debt is the domain of banks and senior credit funds — capital that wants security and predictability and is content with a modest, contracted return. Their underwriting focuses on the value of the asset and the borrower's ability to service the loan.

Mezzanine debt is provided by specialist debt funds, private credit managers and some family offices seeking yield above what senior lending offers, while staying ahead of all equity. It is a position for investors who want fixed-income characteristics with a higher coupon and can accept weaker security.

Preferred equity is often held by institutional co-investors and family offices that want priority over common equity and a defined return, without taking on full operational risk or wanting day-to-day control.

Common equity is held by the sponsor or developer (whose own capital and 'skin in the game' aligns them with co-investors) alongside equity co-investors who are explicitly buying the upside and accepting they sit last in line. This is the position most associated with value-add and opportunistic real estate strategies.

These are conventions, not rules — a single investor can hold across multiple layers, and structures vary by deal and jurisdiction. But the pattern is consistent enough that the stack itself signals who is in a transaction and what each party is optimising for.

§ 05

Why does the capital stack matter for institutional execution?

A capital stack is only useful if every participant can see and trust it. In practice this is where many private real estate transactions break down. The stack is described differently in a developer's pitch deck, a bank's term sheet, a lawyer's draft agreement and a dozen email threads — and the version a co-investor signs is not always reconciled against the version the senior lender holds. Seniority, security and the distribution waterfall are precisely the terms that must be unambiguous, yet they are the ones most often scattered across incompatible documents.

For capital that is governed — family offices, institutional investors, regulated balance sheets — that fragmentation is not a cosmetic problem. The position in the stack defines the legal claim, and an ambiguous claim is an unpriceable risk. A professional investor needs the structure stated once, presented consistently to every party, and recorded so that what was agreed cannot quietly drift.

This is the discipline an execution platform is built to enforce: structuring the deal once, presenting the same capital stack to every counterparty in a controlled dealroom, and sealing each step — indication, reservation, signature, settlement — so the agreed structure stays intact from presentation through to reporting. The concept of the stack is finance; making sure it survives contact with the real transaction is execution.

Key takeaways

The capital stack is the ranked hierarchy of all capital financing a property, ordered by repayment priority and loss-absorption sequence.
The four classic layers, from senior to junior, are senior debt, mezzanine debt, preferred equity and common equity.
Seniority works both ways: distributions are paid top-down, while losses are absorbed bottom-up — common equity is the first cushion, senior debt the last to be touched.
Return is the price of a worse position in the queue: each step down the stack adds risk and demands a higher expected return.
Position in the stack — not headline yield — is what actually defines an investor's risk, which is why reading the stack is the first analytical step.
For institutional capital, the stack only works if seniority and security are stated once and recorded consistently across every document and counterparty.

Frequently asked questions

Is mezzanine financing debt or equity?: Mezzanine is a hybrid that sits between the two, but in its classic form it is structured as subordinated debt: it carries a fixed or floating interest rate and a defined maturity, like a loan, but ranks behind senior debt and ahead of all equity. Because it is junior to the senior lender, its security is typically weaker and it commands a higher interest rate. Some mezzanine instruments also include equity-like features such as warrants or a profit participation, which is why it is often described as the bridge between the debt and equity portions of the stack.
What is the difference between preferred equity and common equity?: Both are equity, but preferred equity ranks ahead of common equity in the distribution waterfall. Preferred equity receives a defined, prioritised return — a preferred coupon or hurdle — before common equity receives anything, and it absorbs loss only after common equity has been exhausted. In return for that priority, it usually accepts limited control rights and a capped or prioritised return. Common equity sits last in line: it is paid only after every other layer, including preferred, has been served, but it captures all the residual upside and typically holds the most control.
Why do junior layers earn a higher return?: Because return is the compensation for accepting a worse position in the repayment queue. Junior layers are repaid later and absorb losses earlier, so they carry more risk; to attract capital into that position, they must offer a higher expected return. The junior layers also serve a structural function: by sitting first in the loss order, common and preferred equity act as a cushion that protects the senior lender, which is precisely what allows senior debt to be priced at a low, fixed rate. Higher return down the stack is therefore not a bonus — it is the price of standing further back in line.
Does the capital stack only apply to development projects?: No. The capital stack applies to essentially any real estate transaction that uses more than one source of capital — acquisitions of stabilised income-producing assets, refinancings, and value-add repositionings, not just ground-up development. The number and mix of layers varies: a low-leverage purchase of a fully-let building might use only senior debt and common equity, while a complex development might add mezzanine and preferred equity to bridge the gap between what the bank will lend and what the sponsor can fund. The principle of seniority and the loss-absorption order remains the same regardless of strategy.
How should an investor read a capital stack before committing?: Start with position, not yield. Identify exactly which layer you are being offered, what ranks above and below you, and what security — if any — attaches to your claim. Then read the distribution waterfall to see the order in which cash is paid out, and reverse it to see the order in which losses are absorbed. Only then assess whether the offered return is adequate compensation for that specific position. Finally, confirm the structure is documented consistently across the term sheet, the agreement and any subscription documents — seniority and security are the terms most prone to ambiguity, and an unclear claim is an unpriceable one. This is educational guidance, not investment advice; positions should always be assessed with qualified legal and financial counsel.