What CMBS Means for Your Lease

Most tenants sign leases without asking about how their building is financed. It’s not an obvious question, and without asking, nobody will bring it up.

Why CMBS Matters to Tenants

When a landlord takes out a mortgage on a property, the loan doesn't always stay with the bank. Often, the bank bundles the loan with dozens of other commercial mortgages. The bundled loans are then sold to investors as bonds. These are known as Commercial Mortgage Backed Securities (CMBS).

Once that happens, decisions are no longer made directly between the landlord and the bank. The loan is managed by a servicer whose primary responsibility is protecting the bondholders.

What Can Go Wrong

When a CMBS loan goes into distress, the landlord loses a significant amount of flexibility. Approving tenant improvement allowances, signing a new lease, or making a capital commitment suddenly require permission from the servicer. The process is substantially slower than dealing with a landlord directly. This can lead to slower decision making, delayed approvals, and situations where previously discussed terms now need outside sign-off. 

The scale of this now is worth understanding. The office CMBS delinquency rate was around 1.8% in late 2022. By early 2026 it had climbed above 12%. That's roughly a sevenfold increase in three years, surpassing even the peak of the 2008 financial crisis. In short, roughly one in 8 office buildings financed this way are currently in some stage of distress. 

When It Does Go Wrong

Picture this: a company finds the right space and negotiates a tenant improvement allowance. The landlord agrees, then the loan goes into special servicing, and the landlord no longer has the authority to approve it. That decision now sits with the servicer, whose only obligation is to the bondholders, not you. Approvals slow down, commitments get walked back, and a lease you sign in good faith starts to look different than it did on paper.

In more serious cases, the building changes hands entirely. The new owner, a lender trying to recover on a bad asset, has no interest in being a landlord. Capital improvements stop, and management deteriorates. Their plan for the building may have nothing to do with office space. A company signed a five-year lease, hoping to renew, while the new owner has already drawn up plans to convert the building into apartments.

Why This Matters

The loan structure behind a building affects what your landlord can actually commit to, who you're really negotiating with, and whether the building you're signing a long-term lease in is being run by someone who plans to keep it that way. It matters as much as the square footage or the base rent, and almost nobody is talking about it.

So, before you sign, ask about the financing. Is there debt on the building, and how is it structured? Are there any plans to sell or refinance? These are simple questions, and the answers tell you a lot about what your landlord can deliver on.

The harder question is who is asking it for you. Most tenants do not realize that the broker showing them space may also represent the landlord who owns it. This is called dual agency, and it creates a conflict the tenant rarely sees. A landlord lists a building with a broker. That same broker brings in a tenant and collects a commission from both sides. On paper they represent everyone. In practice the landlord is a repeat client and the tenant is a one-time deal, and when one person serves two sides with opposing interests, someone gets less than the full picture. It is almost always the tenant. A broker in that position is not the one who flags a distressed loan or warns you that the landlord across the table may not have the authority to honor what was just agreed to. Not because they are dishonest, but because the structure makes it nearly impossible to serve both sides equally.

A broker who works only for tenants does not have that problem. There is no landlord relationship to protect and no commission waiting on the other side of the table. The questions that protect you are the only questions they are paid to ask.