Landlord consent to assignment of a commercial lease turns on five questions:

1. What consent standard does the lease set?

2. Is the proposed new tenant as strong as the current one?

3. Will the original tenant stay liable?

4. Does any guarantee still cover the lease?

5. Would taking the space back be better?

Answer them in that order. Then consent, consent with conditions, refuse, or take the space back.

For example: the dental practice in Suite 210 is being sold to a regional dental group. The buyer's lawyer emails on a Monday: closing is in three weeks, and the deal depends on the landlord's consent to assign the lease.

The property manager forwards it to the asset manager with one line: "Do we have to say yes?"

That's the right first question, and the answer depends on the lease. Too often, though, it's the only question asked. The bigger ones are whether this new tenant is a better or worse bet, and what the landlord should get in return for its signature.

What is an assignment?

In an assignment, the tenant transfers its whole interest in the lease to someone else, who takes over the rest of the term. That's different from a sublease, where the original tenant keeps the lease and lets someone else use some or all of the space.

The difference matters most for one thing: who the landlord can hold responsible for the rent. Assignments often come with a business sale, which puts the landlord's consent on the critical path of someone else's deal.

The assignment consent test

This is the framework. Five questions, in order.

1. What consent standard does the lease set?

Leases usually take one of three positions:

• Absolute discretion: the landlord may approve or refuse for any reason.

• Not unreasonably withheld: the landlord may refuse only with a reasonable basis.

• Silent: consent is required, but no standard is stated.

The silent version is where state law steps in. In California, under Civil Code § 1995.260, if a lease signed on or after September 23, 1983 requires consent but gives no standard, the law reads in an implied standard that consent may not be unreasonably withheld. Whether consent was unreasonably withheld is a question of fact, and the tenant has to prove it.

A freely negotiated "sole discretion" clause, on the other hand, has been held to be a valid standard in California. For leases signed before September 23, 1983, Civil Code § 1995.270 keeps the older rule: a landlord may refuse unreasonably if the lease gives no standard.

Other states take different approaches, so confirm the rule for each property with counsel.

2. Is the new tenant as strong as the current one?

This is the commercial heart of the decision. Ask for:

• financial statements and credit information for the proposed assignee

• its business plan for the space

• its experience running this kind of business

Then test whether the assignee:

• has an acceptable business reputation

• will use the space in line with the lease and local zoning

• fits the property's tenant mix, where that matters

Where a lease uses the reasonableness standard, landlords often list circumstances in the lease where refusing consent is reasonable. Check whether yours does. A refusal tied to an objective business risk, such as weak credit or an incompatible use, is easier to defend.

3. Will the original tenant stay liable?

Unless the landlord agrees otherwise, assignment usually doesn't end the original tenant's responsibility under the lease. Releasing it is a separate decision, and it should be a deliberate one. Keep the original tenant liable unless the new tenant is clearly at least as strong.

4. Does any guarantee still cover the lease?

A guarantee was given for a particular tenant. If the tenant changes, check whether the guarantee continues, whether the guarantor needs to consent, or whether the new tenant should provide its own guarantee. RIOO's guide to lease guarantee types covers how guarantees work.

Do the same for any security. If the lease is backed by a letter of credit or a bank guarantee, confirm how it transfers, or what replaces it.

5. Would taking the space back be better?

Some leases give the landlord a recapture right: the option to end the lease and take the space back instead of consenting to an assignment. If the in-place rent is below market, or the space would re-lease well, recapture may be worth more than consent. Check the lease for the right and its notice timing before you respond.

Consent, conditions, refusal or recapture?

If the tenant is in a rent deferral, check whether the deferral agreement makes repayment of the deferred rent a condition of any assignment. RIOO's guide to commercial tenant rent deferral requests covers how those agreements work.

How fast do you have to answer?

Check the lease first. Many leases set a response period, or a list of information the tenant must supply before the clock starts. Ask for anything missing in writing, straight away, and respond within the lease's timing.

A business sale often runs on a tight schedule, but the tenant's closing date isn't the landlord's deadline. The lease is.

What gets recorded?

The consent is a document, usually signed by the landlord, the original tenant and the new tenant. It should state:

• the effective date of the assignment

• that the new tenant assumes the lease obligations

• whether the original tenant is released, and if so from what

• any conditions of consent

Then update every record that names the tenant: the lease file, billing and receivables, guarantees and security, insurance certificates and contact details. The assignment clause itself should already be in your lease abstract, so the next request starts from the right terms.

Who owns each step?

What should leadership watch?

Assignments are where a portfolio's credit quality can change without anyone signing a new lease. Two things are worth reviewing:

• Releases granted. Every original tenant released from liability is credit the owner gave away. Each release should have a recorded reason.

• Response times. Late answers can lead to disputes over whether the landlord met the lease's response terms, and can delay good deals.

And one control question: for the last assignment your team approved, can you show the consent standard checked, the new tenant's financials reviewed, the decision on releasing the original tenant, and the updated guarantee, all in one file? If not, the consent was given before the decision was made.

Where RIOO fits

RIOO is property management software built directly on NetSuite.

• Built for commercial leases. RIOO Professional is built for commercial portfolios, including offices, retail malls, industrial buildings and warehouses.

• Tenant and lease records in NetSuite. Property, building, unit, tenant and lease records are NetSuite records, so a change of tenant is made in the same system as the finances.

• Billing that follows the lease. A lease executed in RIOO updates the billing schedule and accounts receivable in the same transaction.

Note: This article is operational guidance, not legal advice. Consent rules for assignments differ by state and depend heavily on the lease wording. Last reviewed October 2026. Confirm what applies to each lease with counsel.

Frequently asked questions

Q1. Does a landlord have to consent to a commercial lease assignment?
It depends on the lease and state law. Some leases give the landlord absolute discretion, others require that consent not be unreasonably withheld. In California, if a lease signed on or after September 23, 1983 requires consent but gives no standard, consent may not be unreasonably withheld.

Q2. What are reasonable grounds to refuse an assignment?
Typically objective business risks, such as weak credit or financial strength, a use that conflicts with the lease or zoning, or a poor business reputation. Many leases list reasonable grounds for refusal, so check yours.

Q3. Is the original tenant still liable after an assignment?
Usually, unless the landlord agrees to release it. Releasing the original tenant is a separate decision, best made only when the new tenant is at least as strong.

Q4. What's the difference between an assignment and a sublease?
In an assignment, the tenant transfers its whole interest in the lease to a new tenant. In a sublease, the original tenant keeps the lease and lets someone else use some or all of the space.

Q5. What is a recapture clause?
A lease provision that lets the landlord end the lease and take the space back, instead of consenting to an assignment or sublease. It must be exercised under the clause's terms and timing.

Q6. What conditions can a landlord attach to consent?
Common conditions include keeping the original tenant liable, a new guarantee or security from the assignee, reimbursement of review costs where the lease allows, and payment of any outstanding balances first.

Q7. What happens to a lease guarantee when the lease is assigned?
It depends on the guarantee's wording. The guarantor may need to consent for the guarantee to continue, or the new tenant may need to provide its own.

Q8. How long does a landlord have to respond to an assignment request?
Whatever the lease says. Many leases set a response period, often starting once the tenant has supplied the required information. Respond within it, and in writing.