CMBS conduit feasibility and market study requirements.

The U.S. CMBS conduit market issues roughly $50 to $90 billion in multi-borrower transactions in a typical year, distributed across thirty to fifty deals. Each transaction aggregates loans from five to fifteen contributing originators — investment banks, commercial banks, and specialty CMBS shops — and runs them through a master servicer, special servicer, and trustee structure governed by a Pooling and Servicing Agreement.

The economics of the pool depend on three layered diligence steps. The originator underwrites at origination. The rating agencies re-underwrite during the rating process and publish loan-level commentary in the presale report. The B-piece buyer re-underwrites independently before kick-out, and rejects loans they will not own at first loss. A feasibility or market study that satisfies the originator but fails either of the next two filters will see the loan kicked from the pool and the sponsor scrambling for a refinance window.

Conduit loan size typically ranges from $2 million to $80 million, with portfolio aggregation common at the lower end. Larger single-asset deals migrate to the SASB market, which is covered separately under our SASB sub-pillar.

The B-piece is the unrated and below-investment-grade tranche of a conduit deal — the first-loss position. Because the B-piece buyer absorbs losses before any rated bondholder, they have a contractual right to kick loans they will not own. In practice, the B-piece buyer is the most consequential single underwriter in the conduit process.

The conduit B-piece market is concentrated. Rialto Capital, KKR Real Estate Credit, Eightfold Real Estate Capital, Prime Finance, and Ellington Management together account for the large majority of conduit B-piece purchases. Each runs an internal credit committee that re-underwrites every loan in the pool at the loan-by-loan level and publishes an internal kick-out list before pricing.

The implication for sponsors is direct. A loan can be approved by the originator, accepted by two rating agencies, and still be kicked from the pool if the B-piece buyer disagrees with the comparable set, the cap-rate input, or the rollover assumption. Feasibility studies that pre-empt likely B-piece objections — by triangulating comps from at least three independent sources, by haircutting hospitality projections to the agency case, and by identifying tenant rollover risk explicitly — survive that filter. Studies that read as advocacy do not.

Hospitality is the conduit asset class that triggers the most agency and B-piece scrutiny per dollar of loan, and the comparable set is the analytical center of gravity. A STR-grade competitive set means a set built to the Smith Travel Research convention: typically four to seven properties, matched on chain scale, location class, and demand segmentation, with a documented rationale for inclusion and exclusion of any boundary cases.

The agency view is consistent across KBRA, Fitch, and Moody's: a competitive set that is too generous — meaning it pulls in higher-performing properties to lift the projected ADR and occupancy — will be rejected. The standard agency stress is to penetrate the subject's RevPAR against the competitive set and apply a haircut where penetration is meaningfully above 105 percent. Forward projections that show the subject achieving 115 percent or 120 percent penetration in stabilization without a documented operational case are routinely written down to the comp-set average.

Conduit-grade hospitality feasibility content therefore documents the STR set explicitly, runs the penetration analysis at trailing-twelve and stabilized periods, sources demand-segment data from actual market interviews and TIA or convention-bureau reporting where available, and stress-tests the projection against an agency-style haircut before presenting the lender case.

Conduit sizing is governed by two ratios in tandem: debt service coverage at an underwritten constant, and debt yield at the agency net cash flow. Both have to clear the threshold for the loan to size into the pool.

DSCR thresholds in the current conduit market typically run 1.25x to 1.40x at the agency case, with the lower end reserved for stabilized multifamily and the higher end attached to hospitality and value-add transitional collateral. The underwritten constant is the sizing constant — typically 8.5 to 9.5 percent for most asset classes — applied regardless of the actual interest rate, which builds in a refinance test.

Debt yield thresholds run 8 to 12 percent, again asset-class dependent. Stabilized multifamily and industrial size to the lower end of that band; hospitality and limited-service collateral size to the upper end. A loan that DSCRs at 1.30x but debt-yields at 7.5 percent will be cut down by either the originator or the rating agency; the sizing constraint binds at debt yield in that case.

Feasibility content presents both ratios at the lender case and at the agency case. Where the gap is wide, the study either explains the operational basis for the sponsor's view or accepts a sized-down loan. The economic decision is the borrower's; the analytical disclosure is not optional.