Assignment and Subletting Rights in a Commercial Lease, Explained

What it is

Assignment and subletting are the two ways a tenant hands its lease off to someone else. In an assignment, the tenant transfers the whole lease — its rights and its obligations — to a new party who steps into its shoes. In a sublet, the original tenant stays on the lease but rents some or all of the space to a subtenant underneath it. Same idea, different plumbing: assignment passes the baton, subletting keeps the original runner on the track.

How it plays out in retail net lease

When you buy a single-tenant net-lease property, you're really buying a rent stream backed by a specific tenant's promise to pay. The assignment clause is where that promise can quietly change hands.

Here's how I look at it. You underwrote the deal on the strength of a particular operator — a well-capitalized franchisor, a national credit brand, whoever it is. If that tenant can assign the lease freely, the guarantee you were counting on may go with them, and you can end up with a weaker operator paying the same rent. The rent didn't change. The quality behind it did.

Most well-drafted leases require the landlord's consent before an assignment. But the language around that consent is everything. "Consent not to be unreasonably withheld" is a very different world from "consent at landlord's sole discretion." And watch for the carve-outs: many corporate tenants negotiate the right to assign to an affiliate, a successor by merger, or a buyer of substantially all their assets — without your consent at all. Those exceptions exist for good business reasons, but they're also exactly where your original credit can slip out the side door.

The other piece that matters: does the original tenant stay liable after an assignment? Sometimes yes, sometimes the lease releases them. If the assignor and any guarantor are released, your recourse now runs only to whoever took over.

What to watch for

• Consent standard. Is it "reasonable," "sole discretion," or silent? Silent usually favors the tenant.
• Affiliate and merger carve-outs. Free assignment to related entities or a corporate successor can move your credit without your say-so.
• Continuing liability. Does the original tenant — and the guarantor — stay on the hook, or get released on assignment?
• Recapture rights. Some leases let the landlord take the space back instead of approving a sublet. Useful in a rising market, absent in most net leases.
• Profit sharing. If the subtenant pays more than the tenant's rent, who keeps the spread?
• Use and going-dark language. An assignment can pair with a change of use or a shuttered-but-paying location. Read those clauses together.
• Notice and cure. How much warning do you get, and what documentation must the tenant provide?

How to use it to your advantage

Read the assignment clause before you fall in love with the cap rate. It tells you how durable your income really is, and it's a negotiating point during your due diligence period.

If the language is loose, that's not automatically a dealbreaker — it's information. You can price it in, ask for an estoppel that confirms the current tenant and guarantor status, or push for a landlord-favorable amendment as a condition of closing. The mistake I see buyers make is treating the rent roll as the whole story and skipping the document that governs who pays it.

On the flip side, a strong clause — consent required, original tenant remains liable, tight carve-outs — is a quiet quality signal. It generally makes the asset easier to finance and easier to resell, because the next buyer inherits the same protection you did.

Best case, worst case

Best case:

• Consent required on reasonable terms, tenant and guarantor stay liable after any assignment.
• Carve-outs are narrow, and you get real notice and documentation.
• The clause protects your credit through a sale, a refinance, or the next buyer's diligence.

Worst case:

• Broad free-assignment rights let the lease move to a thinner operator while you keep the same rent.
• The original tenant and guarantor are released, so your recourse follows the weaker party.
• You find all of this after closing, when your options are narrowest.

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General education, not investment, tax, or legal advice. Every lease is different — read the actual document and verify the specifics independently with your own advisors.