Comparing Capital Sources in Commercial Real Estate: A Decision Framework for Debt, Mezzanine, Preferred Equity, and Common Equity

Key Takeaways

Why Capital Source Comparison Matters

Every commercial real estate deal requires capital. The question is never whether to capitalize a deal, but how. The capital stack is the architecture of that decision: which sources of capital, in what proportions, at what cost, with what strings attached. Getting the architecture right is as important as getting the purchase price right. A well-structured capital stack amplifies returns, preserves sponsor control, and provides operational flexibility through the hold period. A poorly structured one creates binding constraints that surface at the worst possible time: during a refinancing, a lease-up shortfall, or an interest rate shock.

The challenge is that capital source selection is multi-dimensional. Cost matters, but it is not the only dimension. A sponsor who selects the cheapest source of capital without evaluating prepayment flexibility, covenant burden, governance impact, and availability by deal size will often discover that the "cheapest" source was actually the most expensive once all friction costs are accounted for. A 6.5% senior loan with yield maintenance, a cash management lockbox, and a 12-month prepayment lockout may cost more in practice than a 7.0% loan with a declining prepayment penalty and no lockbox, depending on the business plan and the expected hold period.

The framework below profiles the five primary capital sources with 2026 market terms, builds a comparison matrix across eight evaluation dimensions, walks through a WACC calculation with a $50M worked example, and presents a decision tree that routes to the right source based on deal-specific characteristics. The goal: give GPs, CFOs, and analysts a repeatable methodology for evaluating capital alternatives on every deal.

The Five Capital Sources, Profiled

The commercial real estate capital stack can include dozens of variations, but five primary categories account for the overwhelming majority of deal financing. From least expensive (lowest risk to the provider) to most expensive (highest risk to the provider):

1. Senior Debt

Senior debt is the foundation of the capital stack. It sits at the bottom (last loss position), carries the lowest cost, and is secured by a first-priority mortgage lien on the real property. The senior lender has the strongest remedies in the stack: real property foreclosure, assignment of rents, and, in most cases, personal recourse against the guarantor for "bad boy" acts (fraud, misappropriation, voluntary bankruptcy, environmental contamination).

Senior debt comes in several forms, each with a different cost and flexibility profile:

• Bank debt (portfolio loans). Originated and held by commercial banks. Typically floating rate (SOFR + 175 to 275 bps), 5 to 7 year terms, 25 to 30 year amortization. Often recourse to the sponsor. The most flexible on prepayment (typically a declining penalty or par after year 1 or 2) but the most covenant-heavy (DSCR tests, LTV tests, net worth covenants). 2026 all-in rates: 6.00% to 7.50%.
• CMBS (conduit). Securitized fixed-rate loans. 10-year terms, 30-year amortization, non-recourse (with bad-boy carveouts). Prepayment via yield maintenance or defeasance, which makes early exit expensive. Lower rates than bank debt (5.50% to 6.75% in 2026) but less flexibility. Minimum loan size typically $3M to $5M.
• Life company (insurance). Portfolio loans from life insurance companies. Fixed or floating rate, 5 to 15 year terms. Conservative leverage (50% to 65% LTV). Very low rates (5.25% to 6.25% in 2026) but selective on property type and market. Favor stabilized, core assets in primary markets.
• Agency (Fannie Mae / Freddie Mac). Multifamily-only. Fixed or floating rate, 5 to 30 year terms. Non-recourse. Competitive rates (5.50% to 6.50% in 2026). Higher leverage available (up to 80% LTV with supplemental programs). The most efficient senior capital for stabilized multifamily.

The Federal Reserve's Q3 2026 Senior Loan Officer Opinion Survey (SLOOS) shows continued bifurcation in senior lending standards. Large banks have eased standards on CRE loans for two consecutive quarters, particularly for multifamily and industrial. Regional and community banks remain cautious, with net tightening on construction and nonfarm nonresidential loans. This bifurcation directly affects capital source selection: sponsors banking with money-center institutions are getting more senior leverage (reducing the need for subordinate capital), while those relying on regional banks may need to fill the gap with mezzanine or preferred equity.

2026 Senior Debt Market Terms

2. Bridge Loans

Bridge loans occupy the space between permanent senior debt and mezzanine capital. They are short-term, floating-rate loans used to finance transitional assets: properties in lease-up, under renovation, or repositioning. The bridge lender provides higher leverage than a permanent lender (up to 75% to 80% of as-is value, or 85% to 90% of cost) in exchange for a higher rate and shorter term.

Bridge loans are senior-secured (first mortgage lien) but behave very differently from permanent senior debt. They are interest-only, typically 2 to 3 years with extension options, and carry floating rates that are 200 to 400 bps above permanent debt. The bridge lender underwrites the business plan (the "go-dark" renovation, the lease-up, the condo conversion) rather than the in-place cash flow. The exit is a permanent refinancing once the property stabilizes.

Bridge lenders fall into three categories:

• Bank bridge. Commercial banks originating floating-rate bridge loans on their balance sheet. Lowest cost (SOFR + 200 to 350 bps, all-in 6.50% to 8.50% in 2026) but most conservative on leverage and property type. Typically limited to 70% to 75% LTC.
• Debt fund bridge. Non-bank lenders (private credit funds) originating higher-leverage bridge loans. Higher cost (SOFR + 350 to 550 bps, all-in 8.50% to 11.00% in 2026) but more aggressive on leverage (up to 80% to 85% LTC) and more flexible on property type. Will lend on transitional assets that banks decline.
• Hard money / private bridge. Individual investors or small private lenders. Highest cost (10% to 15%+) but fastest execution and lowest documentation burden. Primarily for sub-$5M deals or deals that need to close in under 30 days.

The key distinction between bridge debt and mezzanine debt is the lien position. A bridge loan is a first mortgage. Mezzanine debt is a pledge of entity interests behind an existing first mortgage. A bridge loan replaces the senior lender for the transitional period. Mezzanine debt supplements the senior lender's capital. This distinction matters because bridge loans do not require an intercreditor agreement (there is only one lender), which simplifies closing and reduces legal costs.

2026 Bridge Loan Market Terms

3. Mezzanine Debt

Mezzanine debt is a loan secured by a pledge of ownership interests in the entity that owns the property. It sits between senior debt and equity in the capital stack, typically attaching at 65% to 80% of total capitalization. The mezz lender's collateral is not the real estate itself but the membership interests (LLC) or partnership interests (LP) in the property-owning entity. This structural distinction allows mezz to exist alongside a senior mortgage without creating a junior lien that would violate most institutional mortgage documents.

The mezz lender's primary remedy on default is UCC Article 9 foreclosure on the pledged entity interests, which typically completes in 30 to 60 days (versus 6 to 18 months for real property foreclosure). This speed advantage is moderated by the intercreditor agreement (ICA) between the senior and mezz lenders, which imposes a standstill period of 60 to 180 days during which the mezz lender cannot foreclose. The ICA also governs cure rights, purchase options, consent to modifications, and replacement guarantor requirements.

Mezzanine capital providers include:

• Specialty mezz lenders. Dedicated subordinate capital providers (e.g., Arbor, Gramercy Property Trust, Ares Management). Institutional underwriting, standardized ICA templates, typical loan sizes $5M to $50M.
• Debt funds. Private credit funds that originate both bridge and mezz positions. May provide a "stretch senior" loan that functions as combined senior + mezz with a single lender. More flexible on terms but typically more expensive.
• CMBS B-piece buyers. In CMBS structures, the B-piece or subordinate tranche functions similarly to mezz capital. The B-piece buyer takes first loss in the securitization and earns a higher yield.
• Opportunity funds. Private equity real estate funds that deploy capital across the capital stack, including mezz positions, typically on larger deals ($20M+ mezz tranche).

2026 Mezzanine Debt Market Terms

2026 mezz pricing has compressed roughly 75 to 100 bps from the 2023 peak. The Mortgage Bankers Association's CREF research reports total commercial mortgage originations are tracking above $800 billion for 2026, a significant recovery from 2023 to 2024 levels. Subordinate capital origination follows the same trajectory, with mezz and preferred equity providers actively deploying capital after two years of limited activity.

4. Preferred Equity

Preferred equity occupies the same position in the capital stack as mezzanine debt (between senior debt and common equity) but uses a different legal structure. Preferred equity is an ownership interest in the property-owning entity, not a loan. The preferred equity investor is a member or partner of the entity, with priority over common equity holders on distributions and capital returns, but subordinate to all debt holders.

The critical structural differences between preferred equity and mezzanine debt affect remedies, tax treatment, balance sheet classification, and governance:

• Collateral and remedies. Preferred equity has no collateral and no foreclosure remedy. The preferred investor's remedies are contractual: removal of the sponsor as manager, forced capital calls, distribution blockage, or forced sale. These remedies take longer to execute (6 to 18 months versus 30 to 60 days for UCC foreclosure on mezz) and are more uncertain in outcome.
• Senior lender consent. Because preferred equity is an equity interest, not a loan, it does not require an intercreditor agreement with the senior lender. Many senior mortgage documents prohibit subordinate debt but permit preferred equity investments. This makes preferred equity the default subordinate capital source when the senior lender will not consent to mezz.
• Tax treatment. Preferred equity returns are typically treated as partnership allocations (ordinary income and capital gains), not interest income. This can be advantageous or disadvantageous depending on the tax position of the preferred investor.
• Governance. Preferred equity investors typically receive governance rights: board seats or advisory committee membership, consent rights over major decisions (sales, refinancings, capital expenditures above a threshold), and financial reporting requirements. These governance rights persist throughout the hold period, unlike mezz debt where the lender has no governance role unless and until a default occurs.

Preferred equity providers include family offices, private equity real estate funds, high-net-worth individuals, and some institutional investors who prefer the governance rights and potential upside participation that preferred equity offers versus the fixed return of mezz debt. As Investor Ready Capital's comparison of capital layers explains, the choice between mezz and preferred equity is not primarily about cost. It is about the trade-off between faster remedies (mezz) and greater flexibility and governance (preferred equity).

2026 Preferred Equity Market Terms

5. Common Equity

Common equity is the residual interest in the deal. It absorbs first loss, receives the last distributions, and captures all upside above the senior claim holders (lenders and preferred equity). Common equity is the most expensive capital in the stack because it bears the most risk, but it is also the most flexible: no covenants, no maturity dates, no mandatory debt service, no prepayment penalties. The sponsor controls the deal.

In a typical institutional deal, common equity comes from two sources:

• Sponsor equity (GP). The general partner's co-investment, typically 5% to 20% of total equity. The GP earns fees (asset management, acquisition) and a promoted interest (carried interest) in addition to its pro-rata return on invested capital. GP co-investment demonstrates alignment with LPs.
• Limited partner equity (LP). Institutional or individual investors who contribute the majority of the equity (80% to 95% of total equity). LPs receive preferred returns (typically 8% to 10% annually) and a share of profits above the preferred return, net of the GP's promoted interest.

Common equity investors target returns of 12% to 20%+ IRR depending on the risk profile of the deal: core assets target 8% to 12%, value-add targets 12% to 18%, and opportunistic targets 18% to 25%+. The cost of common equity is the GP's weighted average return target across all equity participants, which serves as the equity component in the WACC calculation.

The critical consideration with common equity is dilution. Every dollar of equity raised is a dollar of ownership shared. Adding a GP co-investor, bringing in an LP, or accepting an equity JV partner dilutes the sponsor's ownership and profit share. The decision to raise more equity versus using subordinate debt (mezz or preferred) is a trade-off between ownership dilution and financial leverage risk.

Multi-Dimensional Comparison Matrix

Comparing capital sources on cost alone is insufficient. A comprehensive comparison must evaluate at least eight dimensions: cost (all-in rate), priority in the capital stack, collateral type and lien position, control and governance impact, typical LTV or attachment band, prepayment flexibility, covenant burden, and availability timeline (time to close). The following matrix compares all five sources across these dimensions using 2026 market terms.

The matrix reveals several structural patterns. First, the cost of capital increases monotonically from left to right as the provider's risk increases. Second, control impact shifts from financial covenants (debt) to governance rights (preferred equity) to ownership dilution (common equity). Third, prepayment flexibility is highest at the extremes (common equity has no prepayment issue; bridge loans are typically open) and most constrained in the middle (senior permanent debt with yield maintenance, mezz with lockouts). Fourth, closing speed favors bridge loans and the informal capital markets (hard money, family office preferred equity) over institutional channels (CMBS, life company, agency).

These patterns create natural "fit zones" for each capital source. A sponsor with a stabilized asset, a long hold period, and a low cost of capital target naturally gravitates toward the left side of the matrix (senior permanent debt + common equity). A sponsor with a transitional asset, a short hold period, and a high return target gravitates toward the middle (bridge + mezz or preferred equity). The decision tree in the next section formalizes these intuitions.

WACC: The Blended Cost of Capital

The weighted average cost of capital (WACC) is the single number that collapses a multi-layer capital structure into one comparable metric. It answers the question: "What is the all-in cost of this capital structure, weighted by how much of each source I am using?"

The standard WACC formula, adapted for commercial real estate:

CRE-Specific Modifications to WACC

The textbook WACC formula (used in corporate finance) includes a tax shield on debt: the cost of debt is multiplied by (1 - tax rate) to reflect the tax deductibility of interest expense. In CRE, the tax shield treatment requires three modifications:

1. Pass-through entities. Most CRE deals are structured as pass-through entities (LLCs or LPs), not C-corporations. The entity itself does not pay income tax. Interest expense flows through to the individual investors and is deductible on their personal returns, but the marginal tax rate varies by investor. Applying a single corporate tax rate (as in the textbook formula) is technically incorrect. The practical convention in CRE is to calculate WACC on a pre-tax basis and let each investor apply their own tax adjustment. This is the approach used in this article.

2. Interest expense limitations. The Tax Cuts and Jobs Act (TCJA) Section 163(j) limits the deductibility of business interest expense to 30% of adjusted taxable income for certain businesses. Most CRE entities can elect out of Section 163(j) by electing to use the alternative depreciation system (ADS), but this extends depreciation schedules from 27.5/39 years (MACRS) to 30/40 years (ADS). The election trades a current interest deduction for slower depreciation. The WACC impact depends on the specific deal's interest expense relative to its taxable income. As Origin Investments' guide to WACC methodology notes, the pre-tax WACC is the cleaner starting point for CRE because the after-tax adjustments are investor-specific.

3. Cost of equity estimation. In public markets, the cost of equity is estimated using the Capital Asset Pricing Model (CAPM): risk-free rate + beta times equity risk premium. In private CRE, there is no observable beta. The cost of equity is typically set as the sponsor's target IRR, which reflects the sponsor's required return for the deal's risk profile. This is a negotiated number, not a calculated one. Common conventions: core 8% to 12%, value-add 12% to 18%, opportunistic 18% to 25%+.

Why WACC Matters for Capital Source Selection

WACC provides the apples-to-apples comparison that individual coupon rates cannot. A sponsor evaluating a 6.25% senior loan versus an 11% to 13% mezz tranche is not comparing like for like. The senior loan covers 65% of the stack at 6.25%. The mezz covers 15% of the stack at 13.0%. The remaining 20% must be funded with common equity at an implied cost of 15% to 20%. The question is not "which source is cheaper?" but rather "what is the total blended cost of the capital structure that includes each source?"

Adding a more expensive mezz tranche can actually reduce the effective cost per dollar of equity return if the leverage amplification (higher IRR on a smaller equity base) exceeds the incremental cost of the mezz. This is the fundamental leverage decision in CRE: trading a higher WACC for a higher levered equity return. The WACC quantifies the cost side of that trade.

Worked Example: $50M Industrial Acquisition

Consider a 250,000 SF single-tenant industrial property in a secondary Sun Belt MSA. Purchase price: $50M. In-place NOI: $3.25M. Going-in cap rate: 6.5%. Remaining lease term: 8 years with a credit tenant. The sponsor is evaluating three capital structure alternatives.

Scenario A: Senior Debt Only (65% LTV)

Senior debt service: $32.5M at 6.00%, 30-year amortization = approximately $2.34M annual debt service. Senior DSCR: $3.25M / $2.34M = 1.39x. Cash flow to equity after debt service: $910K. Cash-on-cash return: $910K / $17.5M = 5.2%. With a 5-year hold, 2.5% annual NOI growth, and a 6.75% exit cap, the levered equity IRR is approximately 13.8%.

Scenario B: Senior + Mezzanine (80% Total Leverage)

Combined debt service: Senior $2.34M + Mezz $937.5K (IO) = $3.28M. Senior DSCR: 1.39x (unchanged, senior tranche is the same). Total DSCR: $3.25M / $3.28M = 0.99x. Cash flow to equity after all debt service: negative $27.5K in Year 1. The negative Year 1 cash flow is typical for a leveraged industrial acquisition with an IO mezz tranche. The return comes from NOI growth and the leveraged exit.

With the same 5-year hold assumptions (2.5% annual NOI growth, 6.75% exit cap), the levered equity IRR jumps from 13.8% to approximately 19.4%. The equity multiple jumps from 1.7x to 2.2x. The incremental leverage buys 560 bps of additional equity IRR. The cost: 0 bps of incremental WACC (WACC actually drops by 37 bps because 15% of the stack shifted from 15.0% equity cost to 12.5% mezz cost), negative Year 1 cash flow, a 3-year mezz maturity, and the intercreditor apparatus between the two lenders.

Notice the WACC paradox: adding more expensive capital (12.5% mezz versus 6.0% senior) actually lowered the total WACC because the mezz replaced even more expensive common equity (15.0% target). This is the core insight of the leverage decision. The WACC drops whenever the cost of the new capital source is less than the cost of the capital it displaces, regardless of whether the new source is more expensive than the existing debt.

Scenario C: Senior + Preferred Equity (80% Total Leverage)

The preferred equity scenario has a lower initial WACC (8.40% versus 8.78%) because the current-pay component of the preferred return (10.0%) is lower than the mezz coupon (12.5%). But the total cost is uncertain: the participating preferred investor's total return includes a share of profits above the preferred return hurdle, which could push the effective cost to 14% to 18% depending on deal performance. The "+" in the WACC calculation reflects this variable cost component.

The trade-off: preferred equity has a lower fixed cost but a higher potential total cost (due to profit participation), no foreclosure risk to the sponsor (unlike mezz UCC foreclosure), but permanent governance rights that persist through the hold period. The sponsor gives up a board seat, consent rights on major decisions, and a share of the upside. With mezz, the sponsor gives up none of these unless and until a default occurs.

Scenario Comparison Summary

Scenario B delivers the highest equity IRR (19.4%) but carries the most execution risk: negative Year 1 cash flow, a 3-year mezz maturity that forces early refinancing, and the ICA apparatus between lenders. Scenario C delivers a strong IRR (17.1%) with less refinance pressure but requires sharing governance and upside. Scenario A is the lowest risk and lowest return. There is no universally correct answer. The right choice depends on the sponsor's risk tolerance, hold period, and capital availability.

Decision Tree: Choosing the Right Capital Source

The comparison matrix tells you what each source costs and how it behaves. The decision tree tells you which source to choose for a specific deal. The tree routes through five branching questions, each narrowing the field from five capital sources to one or two.

Question 1: How much leverage do you need?

Start with the total leverage target. If the deal works with 50% to 65% leverage, senior debt alone is sufficient. Skip the subordinate capital decision entirely. The capital stack is simple (senior + common equity), closing costs are lower, there is no intercreditor agreement to negotiate, and the sponsor retains full control. Most core and core-plus deals fall here.

If the deal requires 65% to 85% leverage, subordinate capital is needed. Move to Question 2. If the deal requires 85%+ leverage, you are in the territory of high-leverage bridge loans (debt fund single-tranche bridges that go to 85% to 90% LTC) or stacked capital (senior + mezz + preferred). Very few institutional deals exceed 85% total leverage. Deals that need this much capital typically involve a heavy business plan (gut renovation, ground-up development, or major repositioning) where the sponsor's equity is funding capex reserves, not permanent capitalization.

Question 2: How long is the hold?

Hold period determines which subordinate capital sources are practical. Mezzanine debt typically matures in 2 to 5 years, with most institutional mezz at the 3-year mark. Preferred equity terms range from 3 to 7 years. If the business plan is a 2-year renovation and flip, a 3-year mezz tranche (with prepayment flexibility after 6 to 12 months) aligns well. If the plan is a 7-year core-plus hold, a preferred equity investment with a 5 to 7 year term is a better structural match because it avoids the refinancing event that a shorter-term mezz would force mid-hold.

Short hold (under 3 years): prefer bridge debt (single lender, no ICA) or mezzanine debt (short term matches the plan). Medium hold (3 to 5 years): mezzanine or preferred equity both work; the choice depends on governance tolerance and the senior lender's willingness to consent (see Question 5). Long hold (5+ years): prefer preferred equity or simply raise more common equity and avoid the maturity mismatch entirely.

Question 3: How stable is the cash flow?

Cash flow stability determines whether the deal can service subordinate debt. If in-place NOI covers total debt service (senior + mezz) at a 1.0x or better DSCR, the mezz is self-supporting. If the deal has negative cash flow after total debt service (common in value-add acquisitions where the business plan involves NOI growth), the sponsor must fund the shortfall from equity reserves. This is manageable for 12 to 18 months but becomes stressful if the NOI growth takes longer than expected.

Stable, contractual cash flows (long-term credit leases, stabilized multifamily with low turnover): mezzanine debt works well because the debt service is reliable. Volatile or growing cash flows (lease-up, renovation, repositioning): preferred equity may be better because its current-pay component can be structured at a lower rate (with upside participation replacing the higher fixed coupon), reducing the Year 1 cash flow burden. Alternatively, a bridge loan with a built-in future advance for capex may be the cleanest single-source solution.

Question 4: How strong is the sponsor?

Sponsor strength affects both cost and availability of every capital source. Strong sponsors (track record, net worth, liquidity) get better pricing, more leverage, and access to a wider pool of capital providers. Emerging sponsors (fewer deals, thinner balance sheet) face higher pricing, lower leverage limits, and a narrower pool. This is not a matter of fairness. It is a reflection of the capital provider's underwriting of downside risk, where the sponsor is the last line of defense.

For strong sponsors: the full menu is available. The decision comes down to cost optimization and structural preference. For emerging sponsors: senior bank debt (recourse) is typically available but at lower leverage. CMBS, life company, and agency financing may be available if the property itself is strong enough. Institutional mezz is harder to access because mezz lenders require a replacement guarantor in the ICA, and the emerging sponsor's balance sheet may not meet the qualified-transferee thresholds. Preferred equity from a family office or high-net-worth investor is often the most practical subordinate capital source for emerging sponsors because the preferred investor is making an equity bet on the sponsor, not a credit bet.

Question 5: How much governance are you willing to share?

This is the tiebreaker between mezzanine debt and preferred equity for deals where both are structurally viable. Mezzanine debt has no governance impact during normal operations. The lender has no board seat, no consent rights on leasing or capex, and no information rights beyond standard financial reporting. The ICA governs the relationship between the senior and mezz lenders, not between the mezz lender and the sponsor. The mezz lender's governance role activates only on default.

Preferred equity, by contrast, comes with governance from day one. The preferred investor typically receives quarterly financial reporting, consent rights over major decisions (sales above a threshold, refinancings, capital expenditures above a threshold, new leases above a threshold), and sometimes a board seat or advisory committee membership. These rights persist throughout the hold period, regardless of deal performance.

If the sponsor wants clean control: mezzanine debt. If the sponsor is willing to share governance in exchange for potentially lower cost, no foreclosure risk, and alignment with a strategic partner: preferred equity. If the senior lender prohibits subordinate debt but permits preferred equity (common in CMBS and some life company structures): preferred equity is the only subordinate option regardless of preference.

Capital Availability by Deal Size

The decision framework assumes that every capital source is available. In practice, availability varies sharply by deal size. A $5M industrial acquisition and a $200M office tower do not have access to the same capital markets. The sponsor's effective menu depends on where the deal falls on the size spectrum.

Sub-$10M Deals

Deals below $10M have the narrowest capital menu. Senior debt is available from local and regional banks (portfolio loans, typically recourse), small-balance CMBS conduits (minimum $3M to $5M), and Freddie Mac Small Balance Loans (multifamily, $1M to $7.5M). Bridge lending is available from hard money lenders and a handful of small-balance debt funds.

Institutional mezzanine debt is largely unavailable below $10M. Most specialty mezz lenders have a $5M minimum loan size, and the legal costs of the intercreditor agreement ($50K to $100K for the ICA alone) make mezz uneconomical on a $1M tranche. Preferred equity from family offices or high-net-worth individuals is the most common subordinate capital source for sub-$10M deals, though it is sourced through relationships rather than institutional channels. Seller financing (carryback notes) is also common in this size range as a quasi-subordinate capital source, with the seller providing a second position note at below-market rates as part of the purchase negotiation.

$10M to $50M Deals

The middle market. Senior debt is available from regional and national banks, CMBS conduits, some life companies, and agency lenders (multifamily). Bridge lending is available from both bank and debt fund sources. Mezzanine debt becomes practical: most specialty mezz lenders are active in the $3M to $15M mezz tranche range on deals of this size. Preferred equity is available from a wider pool, including institutional preferred equity providers, family offices, and some pension fund co-investment programs.

This is the "full menu" deal size for most capital sources. The $10M to $50M range has the most competitive capital markets because the deal is large enough for institutional providers but small enough to avoid the complexity and timeline of mega-deal syndication. Sponsors in this range should quote multiple sources for each layer and use competitive tension to drive terms.

$50M to $200M Deals

Large institutional deals. Senior debt options expand to include life company shelf placements (large insurance companies originating directly from their general account), CMBS single-asset/single-borrower (SASB) structures, and syndicated bank facilities (multiple banks sharing a single loan). Bridge lending is available from large debt funds and bank syndications. Mezzanine capital is available from opportunity funds, large mezz specialty lenders, and sometimes from the senior lender itself through an A/B note structure (where the B-note functions as internal mezz within a single loan).

The A/B note structure deserves special attention. In an A/B note deal, the senior lender originates a single mortgage but divides it internally into an A-note (lower leverage, lower risk) and a B-note (higher leverage, higher risk). The B-note is sold to a subordinate capital buyer. This structure avoids the intercreditor agreement entirely (there is only one mortgage) and can be more efficient than a separate mezz loan. It is primarily available on deals above $50M.

$200M+ Deals

Mega-deals. Senior debt typically requires syndication (multiple lenders sharing the loan) or securitization (CMBS SASB). Life companies can write $200M+ tickets on trophy assets but are highly selective. Bridge lending at this size comes from large debt funds (Blackstone Mortgage Trust, Starwood Capital, Apollo) and syndicated bank facilities.

Subordinate capital at $200M+ is provided by large opportunity funds, sovereign wealth fund co-investment programs, and pension fund separate accounts. The capital structure may include multiple subordinate layers (mezz + preferred equity, or multiple mezz tranches at different attachment points). The complexity and legal cost are high, but the per-dollar transaction cost is lower because the fixed costs of documentation and negotiation are amortized over a larger capital base. Deals of this size also attract structured finance solutions, including the use of total return swaps, mezzanine repo facilities, and CLO (collateralized loan obligation) structures that are unavailable to smaller deals.

Common Mistakes in Capital Source Selection

Capital source selection is a multi-dimensional optimization problem, and practitioners regularly optimize on the wrong dimension. The following mistakes appear repeatedly in deal structuring, even among experienced sponsors.

1. Choosing capital based solely on coupon rate. The headline coupon is the most visible cost, but it is often the least important. A 12.5% mezz loan with open prepayment after 6 months, no lockbox, and a light covenant package may be cheaper in practice than an 11.5% mezz loan with a 12-month lockout, yield maintenance, a cash management lockbox, and quarterly financial covenants that require audited statements. The total cost of capital includes origination fees (1% to 2%), legal costs ($50K to $100K for the ICA), exit fees (0.5% to 1.0%), and the opportunity cost of the covenants. A sponsor who picks the lowest coupon without evaluating these friction costs often discovers the "cheaper" loan was more expensive by 150 to 300 bps on a total-cost basis. According to Attract Capital's guidance on acquisition financing, the total cost of capital, including all transaction costs and flexibility constraints, should drive the decision rather than the nominal rate alone.

2. Defaulting to mezzanine when preferred equity is a better structural fit. Mezzanine debt is the default subordinate capital source for many sponsors because it is familiar, well-documented (the CREFC model ICA provides a standardized framework), and does not require sharing governance. But mezz is not always the best choice. When the senior lender prohibits subordinate debt (common in CMBS and some life company structures), when the deal's cash flow cannot support the mezz coupon in Year 1, when the sponsor's balance sheet does not meet the qualified-transferee requirements in the ICA, or when the hold period exceeds the available mezz term, preferred equity is the better structural fit. The question to ask is not "can we do mezz?" but "which subordinate source best matches the deal's risk profile, cash flow pattern, and hold period?"

3. Ignoring the maturity mismatch. A 10-year senior loan paired with a 3-year mezz tranche creates a 7-year gap during which the sponsor must refinance the mezz while the senior loan is still outstanding. If the mezz matures during a tight credit market (as happened in 2023 and 2024), the sponsor faces three bad options: pay off the mezz with equity (diluting returns), extend the mezz at a higher rate (increasing cost), or default on the mezz (triggering UCC foreclosure). The maturity mismatch is the most common structural risk in mezz-financed deals. Practitioners who do not model the mezz refinancing as a discrete risk event in their pro forma are underestimating downside scenarios by 200 to 400 bps of IRR.

4. Underestimating the intercreditor negotiation. The intercreditor agreement between senior and mezzanine lenders is typically the most heavily negotiated document in a multi-layer capital structure, running 40 to 80 pages. The ICA negotiation adds 2 to 4 weeks to the closing timeline and $50K to $100K in legal costs (for both sides). Sponsors who budget for the loan closing but not the ICA negotiation routinely blow their closing timeline and cost budget. The ICA is not a formality. The standstill period, cure rights, purchase option, and qualified-transferee definition in the ICA will determine the mezz lender's real remedies and the sponsor's real constraints. Negotiate the ICA before committing to the mezz term sheet.

5. Failing to run the WACC. Sponsors often evaluate individual capital sources in isolation ("Is 12.5% too expensive for mezz?") without calculating the WACC of the complete capital structure. As demonstrated in the $50M worked example above, adding a 12.5% mezz tranche can actually lower the WACC if it displaces more expensive common equity. The only way to see this is to calculate the blended cost across all layers. Run the WACC for every capital structure alternative. It takes five minutes and prevents months of suboptimal structuring.

6. Not matching capital source to business plan phase. A stabilized, cash-flowing asset with a 10-year hold does not need a 3-year bridge loan. A value-add renovation with a 24-month execution timeline does not need a 10-year CMBS loan with yield maintenance. The capital source should match the phase of the business plan. Bridge capital for the transitional phase. Permanent capital for the stabilized phase. Subordinate capital sized to the leverage need at each phase, not to the maximum available. Sponsors who use transitional capital on stabilized assets pay too much. Sponsors who use permanent capital on transitional assets pay in inflexibility.

7. Overlooking the governance cost of preferred equity. Preferred equity's headline cost (current pay return) is often lower than mezzanine debt's coupon. This creates the illusion that preferred equity is cheaper. But the governance rights embedded in preferred equity, including consent rights over sales, refinancings, major leases, and capital expenditures, impose a real cost that does not appear in the WACC. A consent right that delays a refinancing by 60 days has a quantifiable economic cost. A board seat that requires quarterly meetings and detailed reporting has a management time cost. Sponsors should value the governance concessions as a separate line item and add them to the WACC comparison before concluding that preferred equity is the cheaper alternative.

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