Single-Tenant vs Portfolio DSTs: Understanding Tenant Concentration Risk

A single-tenant DST's income is one lease, and the trust cannot write another

The concentration risk is structural, not just statistical. Under Rev. Rul. 2004-86 the trustee 'may not renegotiate the lease with Z' and may not lease to anyone else 'except in the case of Z's bankruptcy or insolvency,' so a tenant that goes dark while solvent, or that declines to renew at expiry, leaves the trust with a building it is not allowed to re-let.

David Silverman's 2024 outline spells out the consequence: if the default 'was not due to the tenant's insolvency or bankruptcy, the DST would be required to sell the property and terminate the DST since no new tenant could be substituted.' The other route most trust agreements provide, transferring the property to an LLC whose manager can re-lease and refinance, turns your interest into a partnership interest that can no longer be exchanged (what you actually own in a DST).

Hypothetical: $100,000 in a trust whose one tenant supports a 5.5% distribution pays $5,500 a year until the tenant vacates in year four, then $0 while debt service continues from reserves. The same $100,000 in a 1,200-unit apartment portfolio sees a 5-point rise in vacancy trim distributions, not stop them.

Portfolio DSTs dilute tenant risk but insert a master tenant and keep one sponsor

Multi-property trusts are now a large share of the market; Starwood Multifamily Portfolio Exchange I, D.S.T. reported a $124,086,520 offering with 112 investors on its April 2026 Form D/A, and ERP 1031 Industrial Portfolio IV DST a $36,150,000 offering. The outline notes that such trusts may place each property in a separate sub-trust with its own lease so that 'the possible default involving a single property' does not drag down the performing ones.

What the diversification does not remove is the master tenant. Because the trust itself cannot sign apartment or storage leases, it leases the whole property to a master tenant, 'almost always' a sponsor affiliate, whose rent to the trust is fixed; if sublease income falls short, the master tenant 'will bear the risk of loss' until it runs out of capital or the sponsor stops feeding it (master-lease risk and what a sponsor or master-tenant bankruptcy means).

A portfolio DST is also still one sponsor, usually one loan and often one region, so its diversification is narrower than a fund's (how much diversification you really get and how to analyze multi-asset offerings).

Three numbers price a single tenant: credit rating, lease term and cap rate

Credit comes first. The SEC's credit-ratings bulletin explains that agencies draw the line between investment grade and non-investment grade at BBB-, and it stresses that ratings are third-party opinions of relative credit risk, not guarantees. Ask whether the rated parent actually signed the lease or merely a franchisee did.

Lease term comes second: Kiplinger's June 2026 checklist puts it as, if a major lease expires in three years and the DST's expected hold is seven, 'somebody is going to have to re-lease the space,' and in a single-tenant trust that somebody cannot be the trustee.

Cap rate comes third and reflects the first two. One broker's early-2026 survey placed investment-grade net-lease cap rates around 5-6% and weaker credits or shorter terms at 7-8% (Baker 1031); a hypothetical $10,000,000 building bought at a 6.0% cap yields $600,000 of rent, which after trust expenses and a 10% load on the equity raised lands nearer 5% to investors. A higher advertised yield in a single-tenant DST is usually paying you for one of those three numbers being weaker.

When a single-tenant DST still belongs in the mix

A single investment-grade tenant on a long lease is the lowest-operating-risk real estate a DST can hold, and the outline describes such triple-net deals to a credit tenant as the case where 'risks to the DST are low.' The exposure is binary, not high, which argues for sizing it as a slice rather than the whole exchange (comparing DST yield to a direct NNN cap rate).

Zero-cash-flow DSTs are almost always single credit tenants by design: all rent goes to the lender to pay down debt, so the tenant's credit is the entire investment case (zero-cash-flow DSTs explained and cash-out DST solutions).

A barbell puts the two structures to work together. Hypothetical: $800,000 of exchange equity split as $200,000 in an investment-grade net-lease DST for fixed income and $600,000 across two multifamily or industrial portfolio DSTs for tenant breadth, which keeps any one tenant's departure to a quarter of the income (sizing across multiple trusts).

Stress-test questions to put to the sponsor about a tenant default

Every answer should be in the PPM or obtainable in writing before you identify the trust. Sponsor risk factors already warn that distributions can stop or be paid from capital (NexPoint's disclosure), so the question is what specifically happens to yours when the lease stops paying.

We put these questions to sponsors on every single-tenant offering we consider placing with clients, and a sponsor that answers them plainly is telling you something too. Have your CPA or attorney review the lease guaranty and the trust agreement's conversion clause before you rely on either.

• If the tenant stops paying but is not insolvent, what does the trust agreement permit: hold, sell, or convert to an LLC, and who decides?
• How many months of debt service does the reserve cover with zero rent, and is any of it earmarked for other purposes?
• Who signed the lease and who guarantees it: the rated parent, a subsidiary, or a franchisee?
• Does the loan include a cash sweep or default trigger tied to a tenant downgrade, lease expiry or non-renewal notice?
• How much lease term remains at the projected sale date, and what exit cap rate does the projection assume for that shorter term?
• Does the tenant hold a termination option, a co-tenancy clause or a purchase option, and at what price?