How to Optimize Your Capital Stack in Commercial Real Estate

BestCRE Transforms Challenges into Opportunities

The capital stack is the single most consequential decision a commercial real estate sponsor makes — yet most operators treat it as an afterthought, something to figure out once a deal is under contract. The sponsors who consistently outperform do the opposite. They architect the capital stack before they underwrite the deal, because how a project is capitalized determines not just whether it gets done, but whether it survives a market correction, generates carried interest, and can be refinanced or sold on the sponsor’s timeline rather than a lender’s.

In today’s market — characterized by elevated base rates, compressed cap rates in select sectors, and a bifurcated lending environment where regional bank exposure to CRE has tightened dramatically — the old playbook of layering in the cheapest available debt no longer works. Optimizing a capital stack now requires a sophisticated understanding of how senior debt, mezzanine, preferred equity, and common equity interact under stress, and how each layer is priced in the current environment. The spread between an optimized and a poorly constructed capital stack can be 200 to 400 basis points of net return to the sponsor. In a market where deals are won and lost at the margins, that differential is the business.

BestCRE works with sponsors, family offices, and institutional allocators across every major commercial asset class to structure capital stacks that are not just executable today but resilient across a three-to-five year hold. With hundreds of active lending relationships spanning agency debt, CMBS, life insurance companies, debt funds, family office capital, and institutional preferred equity providers, the BestCRE advisory platform connects the right capital to the right deal at the right moment in the cycle.

What the Capital Stack Actually Is — and Why the Order of Claims Matters

The capital stack is a hierarchy of claims on a property’s cash flows and value. Each layer has a defined position in the waterfall — meaning a defined order of repayment in both income distribution and disposition proceeds. Senior debt sits at the bottom of the stack and the top of the repayment priority. Common equity sits at the top of the stack and the bottom of the repayment priority. Everything in between — mezzanine debt, preferred equity, subordinate debt — occupies a middle tier that carries higher risk than senior debt but higher return potential than senior debt, in exchange for a subordinated claim.

This hierarchy matters because commercial real estate values are not static. A property that was capitalized at a 65 percent loan-to-value ratio in 2021 against an artificially compressed cap rate may sit at an effective LTV of 80 to 90 percent today as cap rates have expanded and valuations have corrected. A sponsor who stacked mezzanine debt on top of that senior loan in 2021 now faces a capital structure with no equity cushion — and in some cases, negative equity. This is not a hypothetical. It describes a substantial portion of the office, retail, and multifamily loans originated between 2020 and 2022 that are now facing maturity walls in 2024 and 2025, with roughly $2.8 trillion in commercial real estate debt maturing over a three-year period according to the Mortgage Bankers Association’s 2024 commercial real estate finance forecast.

Optimizing the capital stack means calibrating each layer against the property’s actual cash flow capacity, the hold period, the exit scenario, and the stress tolerance the sponsor is prepared to absorb. A deal capitalized at 55 percent LTV with no mezzanine gives up leverage return but survives a 20 percent value decline without a technical default. A deal at 80 percent total capitalization with a mezzanine piece generates higher equity returns in a bull case but is a single bad quarter away from a lender conversation. Neither structure is inherently wrong — the question is whether the structure is chosen intentionally or inherited by default.

Senior Debt: The Foundation Layer and Where the Market Stands Today

Senior debt is the largest component of most commercial real estate capital stacks, typically representing 50 to 70 percent of total capitalization. It is also the layer most directly exposed to monetary policy — senior floating-rate debt repriced violently as the Federal Reserve moved the federal funds rate from near-zero to a range of 5.25 to 5.50 percent between March 2022 and July 2023, and rates remained elevated through early 2025. The 10-year Treasury, which anchors fixed-rate commercial mortgages, traded above 4.5 percent for extended periods during this cycle, compressing debt coverage ratios across virtually every asset class.

The practical consequence is that deals which were cash-flow positive at a 3.5 percent all-in rate are now debt-service constrained at 6.5 to 7.5 percent, depending on the lender type and property risk profile. This has forced sponsors to do one of three things: inject more equity to reduce the senior loan amount, accept lower leverage and live with compressed equity returns, or find mezzanine or preferred equity to bridge the gap between what the senior lender will fund and what the deal requires to close. None of these options is free. Each one changes the return profile in ways that require careful underwriting before committing to the structure.

The lender landscape has also fragmented significantly. Regional and community banks — historically the dominant source of construction and bridge lending for middle-market CRE — have pulled back sharply following the failures of Silicon Valley Bank and Signature Bank in 2023 and the subsequent tightening of regulatory scrutiny on commercial real estate concentration. The void has been partially filled by debt funds and private credit vehicles, which now provide construction, bridge, and transitional lending at spreads 150 to 250 basis points above where bank pricing sat two years ago. Understanding which lending channel is appropriate for a given deal type, property class, and geography is now a material competitive advantage.

Mezzanine Debt and Preferred Equity: Filling the Gap Without Destroying Returns

Mezzanine debt and preferred equity occupy the middle of the capital stack. They are not interchangeable — mezzanine debt is secured by a pledge of the borrowing entity’s membership interest in the property-owning entity, while preferred equity is a direct ownership interest in the entity that owns the property. The distinction matters in a default scenario: mezzanine lenders foreclose on the equity, which can happen faster and outside of the court system in many jurisdictions, while preferred equity holders exercise contractual rights within the entity’s operating agreement. From a practical standpoint, both instruments serve the same purpose: filling the gap between what senior debt will cover and what the total project cost requires.

Current pricing for institutional mezzanine debt runs approximately 10 to 14 percent depending on leverage attachment point, asset quality, and sponsor track record. Preferred equity from family office or institutional sources typically prices between 10 and 16 percent, with some structured as current-pay and others as accruing preferred returns that pay out at exit. The blended cost of a senior-plus-mezz stack today — at a 75 percent total LTC — may land in the 8.5 to 10.5 percent range, compared to a pure senior stack at 65 percent LTC costing 6.5 to 7.5 percent. The additional leverage cost must be weighed against the incremental equity return it generates — and in many cases in this rate environment, the math does not close in favor of the mezzanine piece.

Equity Structure: JV, Co-GP, and the Sponsor Promote

The equity layer is where sponsors generate most of their wealth — but it is also where the most structuring complexity lives. A joint venture equity structure requires agreement on contributed equity, preferred return thresholds, profit splits, waterfall mechanics, decision rights, and exit triggers. These terms are negotiated against a backdrop of limited partners who have seen enough deals go sideways to demand protections that were considered aggressive three years ago — GP clawback provisions, LP removal rights, hard preferred return floors, and distribution lockboxes are now standard requests from sophisticated family offices and institutional JV partners.

The sponsor promote — the carried interest above the preferred return threshold — is the engine of sponsor economics. A well-structured waterfall might look like this: 8 percent preferred return to LP on contributed equity, then a 70/30 LP/GP split until a 1.5x equity multiple is achieved, then a 50/50 split thereafter. The Co-GP structure has also gained traction in the current cycle as a way for experienced operators to access institutional equity without surrendering majority control. In a Co-GP arrangement, a capital partner takes a co-general partner position and contributes 20 to 50 percent of the GP equity in exchange for a current-pay preferred return on their GP contribution, enhanced decision rights on major capital decisions, and a proportional share of the promote.

Construction and Development: Where Capital Stack Discipline Matters Most

Development deals represent the highest-risk, highest-reward environment for capital stack design. A stabilized acquisition offers the cushion of in-place cash flow — even a poorly structured deal can often service its debt if the property is generating rent. A ground-up development generates no cash flow for 18 to 36 months and depends entirely on the accuracy of the cost budget, the construction timeline, the lease-up assumption, and the exit cap rate assumption. Construction debt today — typically structured as a floating rate loan on a 24 to 36 month term with extension options — is priced at SOFR plus 275 to 450 basis points for quality sponsors and assets in primary markets, translating to all-in rates of approximately 7.5 to 10 percent in the current environment.

Refinancing and Recapitalization: The Most Overlooked Optimization Window

Most capital stack optimization discussions focus on deal entry. The more overlooked optimization window is refinancing and recapitalization — situations where an existing capital structure is no longer appropriate for the property’s current state or market environment. Sponsors who begin refinancing conversations 12 to 18 months before loan maturity have maximum optionality. They can run a competitive process, negotiate from a position of stability, and select the best available terms. Sponsors who begin the process 90 days before maturity are negotiating under duress, and lenders price that duress into the terms.

AI and the Future of Capital Stack Intelligence

Artificial intelligence is beginning to reshape how sponsors and advisors analyze and optimize capital stacks. Machine learning models trained on loan performance data, property-level cash flow histories, and lender appetite signals are now being deployed by the most sophisticated debt advisory platforms to identify the optimal lender match for a given deal before the first conversation is initiated. BestCRE is building this capability into the core of its advisory workflow, combining hundreds of active lender relationships with analytical tools that help sponsors see the full range of capital stack options before committing to a structure.

The BestCRE Approach: Structured Capital, Independent Perspective

BestCRE brings an independent, institution-quality perspective to capital stack advisory. We are not affiliated with any single lender, debt fund, or equity source — which means our recommendations are driven by what is right for the deal and the sponsor’s long-term goals, not by what produces the highest fee for a lending partner. Whether you are capitalizing a new acquisition, restructuring a development, navigating a loan maturity, or exploring joint venture equity for a pipeline of deals, BestCRE has the relationships and the analytical framework to deliver optimized capital solutions.

Share your project details with us and our team will respond with a preliminary assessment of your capital stack options. Reach us at team@bestcre.com or visit our contact page.