Week 4 CRE

Commercial Mortgage-Backed Security (CMBS)

A securitized bond backed by pooled commercial mortgage loans; transforms illiquid whole loans into tradable securities using tranching and a structured cash flow waterfall.

Private Whole Loan

A direct one-to-one commercial loan where a lender funds and holds the entire mortgage; lender bears 100% of default risk and receives 100% of interest.

Securitization

The process of pooling loans and issuing bonds backed by their cash flows; converts long-term loans into immediately saleable securities.

Tranche

A horizontal slice of risk within a CMBS structure; each tranche has different LTV exposure, credit rating, and yield based on payment priority.

Cash Flow Waterfall

The priority-of-payments structure where cash flows are distributed sequentially from senior to subordinate tranches.

Subordination

Credit protection mechanism where lower tranches absorb losses before higher tranches.

Loan-to-Value (LTV)

LTV = Loan Amount ÷ Property Value; lower LTV means greater equity cushion and lower risk.

AAA Tranche

Highest-rated senior tranche with lowest LTV exposure and strongest protection from losses; lowest yield but highest safety.

Mezzanine Tranche

Middle tranche that absorbs losses after first-loss piece but before senior bonds; higher yield due to higher risk.

First-Loss Position (B-Piece)

Lowest tranche that absorbs initial losses in default; required under risk retention rules to maintain sponsor skin in the game.

Risk Retention

Regulation requiring sponsors to retain at least 5% of credit risk to reduce moral hazard in securitization.

REMIC

A tax-structured trust allowing CMBS cash flows to pass through without entity-level taxation.

Residual Certificate

Bottom-of-waterfall certificate receiving excess cash flow after all tranches are paid; typically unrated.

Interest-Only Loan

Loan requiring only interest payments during term; Payment = Loan Balance × Interest Rate; full principal due at maturity.

Amortizing Loan

Loan where payments include both interest and principal, reducing OPB over time.

Debt Service Coverage Ratio (DSCR)

DSCR = NOI ÷ Annual Debt Service; measures property’s ability to cover loan payments (1.0 = break-even).

Cross-Collateralization

One loan secured by multiple properties; combined income supports total debt.

Non-Recourse Loan

Loan where lender’s only remedy in default is to seize the collateral property.

Bad Boy Carve-Outs

Exceptions that make a non-recourse loan recourse if borrower commits fraud or misconduct.

Lockout Provision

Period during which borrower cannot prepay a CMBS loan; protects investors from reinvestment risk.

Defeasance

Prepayment substitute requiring borrower to purchase Treasury securities that replicate remaining loan payments; Treasuries replace real estate as collateral.

Reinvestment Risk

Risk that returned principal must be reinvested at lower market rates.

Term Default

Default during loan term due to insufficient NOI (DSCR < 1.0).

Maturity Default

Default at maturity when borrower cannot refinance or repay balloon balance.

Balloon Payment

Lump-sum principal repayment due at loan maturity; equals remaining OPB.

Refinancing Risk

Risk borrower cannot secure new debt at maturity due to higher rates or lower property value.

Maturity Wall

Large concentration of loan maturities occurring in a high-rate environment.

Special Servicer

Workout manager that takes control of a CMBS loan after default to restructure or liquidate.

CLO (Collateralized Loan Obligation)

Securitized vehicle backed by corporate leveraged loans; actively managed portfolio.

CDO (Collateralized Debt Obligation)

Structured security backed by various debt instruments, sometimes including other tranches.

Liquidity

Ability to convert long-term loans into cash through securitization.

Capital Stack

Layered structure of debt claims ordered by payment priority and loss absorption.