Assignment and subletting are the two mechanisms by which a commercial tenant transfers its interest in leased premises to a third party. In an assignment, the tenant transfers its entire remaining leasehold interest (all rights and obligations under the lease) to the assignee; the original tenant typically remains secondarily liable unless released by the landlord.
In a sublease, the tenant retains its direct relationship with the landlord, creates a new landlord-tenant relationship between itself and the subtenant, and remains fully liable to the landlord for all obligations under the head lease including rent and maintenance; the subtenant has no direct obligation to the head landlord and cannot enforce the head lease directly. The distinction matters both economically (the assignment price or sublease premium reflects different levels of risk and commitment) and legally, because the original tenant's continuing liability after an assignment is often the central commercial issue in consent negotiations.
Most commercial leases require the landlord's consent before the tenant may assign or sublet, and the terms of that consent clause (what standard applies to the landlord's discretion) are heavily negotiated. A consent clause that grants the landlord sole and absolute discretion allows the landlord to withhold consent for any reason or no reason, effectively giving the landlord a veto over any disposition of the lease.
A clause requiring that consent not be unreasonably withheld limits the landlord to objecting on commercially reasonable grounds: the proposed assignee's financial strength, the nature of the use, the potential impact on other tenants, or the proposed modifications to the premises. Some jurisdictions impose a reasonableness standard by statute even where the lease is silent, and the common law has developed a body of cases defining what reasons are reasonable and unreasonable.
Negotiating a defined list of reasonable grounds for refusal, rather than leaving it to the common law, gives both parties greater predictability.
Recapture rights are one of the most landlord-favorable tools in assignment and subletting provisions. A recapture clause gives the landlord the right, upon receiving an assignment or subletting request, to terminate the lease (or recapture the specific portion of the premises that the tenant seeks to sublet) instead of consenting.
Recapture is particularly common in retail leases where the landlord's primary interest is in controlling tenant mix and occupancy. A tenant seeking to sublet excess space at above-market rent to monetize a favorable lease faces the risk that the landlord will recapture the space, lease it directly at market rent, and eliminate the sublease premium, capturing for itself the value that the below-market lease represents.
For tenants negotiating new leases, limiting or eliminating recapture rights, or conditioning recapture on the landlord paying the tenant the present value of the sublease premium, is a priority if there is any expectation of future assignment or subletting activity.
Assignment provisions intersect with mergers, acquisitions, and corporate restructurings in ways that create significant transactional risk. A change-of-control clause, which treats a merger, acquisition, or significant ownership change as a deemed assignment requiring consent, can give a landlord leverage over an M&A transaction that the acquirer did not anticipate and the seller did not disclose adequately.
In acquisition due diligence, reviewing every material lease for assignment and change-of-control provisions is standard practice; failing to identify a landlord consent requirement on a critical facility lease can result in the landlord using the consent process to extract concessions (rent increases, lease extensions, personal guaranties) as the price of cooperation. Sophisticated buyers structure acquisition transactions to minimize deemed assignment triggers through carve-outs for intra-group transfers, public company mergers, and transfers to affiliates; these carve-outs are negotiated at lease origination and are not available as a remedy after the fact.
An assignment transfers the tenant's entire remaining interest in the lease to the assignee, who steps into the tenant's shoes and deals directly with the landlord. A sublease transfers only part of the term or the space (or all of it for less than the full remaining term) and creates a new landlord-tenant relationship between the original tenant and its subtenant, leaving the head lease intact.
The liability consequences differ sharply. After a sublease, the original tenant is still the landlord's tenant and remains fully responsible for rent and every other head-lease obligation, so a subtenant default is the original tenant's problem. After an assignment, the assignee becomes the direct tenant, but the assigning tenant typically stays secondarily liable unless the landlord signs a release, which is often the central point negotiated in the consent.
Almost every commercial lease bars assignment or subletting without the landlord's consent, and the standard governing that consent is heavily negotiated. A sole-and-absolute-discretion clause lets the landlord refuse for any reason or none, effectively a veto over any transfer. A clause requiring that consent not be unreasonably withheld limits the landlord to commercially reasonable grounds, such as the proposed party's financial strength, its intended use, or the effect on other tenants and the tenant mix.
Some jurisdictions imply a reasonableness standard by statute or common law even where the lease is silent, and a body of case law defines which refusals are reasonable. To reduce that uncertainty, sophisticated tenants negotiate a defined list of grounds on which the landlord may refuse, rather than leaving the question to litigation after the fact.
A recapture clause gives the landlord, on receiving a transfer request, the option to terminate the lease (or take back just the space proposed to be sublet) instead of consenting. It is common in retail, where the landlord wants to control tenant mix, and it directly targets a tenant trying to sublet excess space at a profit: the landlord can recapture the space, re-lease it at market, and keep the value of a below-market lease for itself.
Assignment provisions also reach corporate transactions. A change-of-control clause can deem a merger, acquisition, or significant ownership change to be an assignment requiring consent, handing the landlord leverage over a deal the parties did not anticipate. That is why reviewing every material lease for assignment and change-of-control language is standard acquisition due diligence, and why carve-outs for intra-group and affiliate transfers are negotiated at lease signing rather than sought later.
An assignment transfers the tenant's entire remaining leasehold to the assignee, who becomes the direct tenant under the lease. A sublease keeps the original tenant on the head lease and creates a separate landlord-tenant relationship between that tenant and its subtenant, so the original tenant stays liable to the landlord.
Usually yes, at least secondarily. Unless the landlord grants an express release, the assigning tenant typically remains liable if the assignee defaults. Negotiating that release, or a cap on continuing liability, is often the central issue in the landlord's consent to the assignment.
It depends on the lease. Under a sole-and-absolute-discretion clause the landlord can refuse for any reason. Under a clause requiring that consent not be unreasonably withheld, the landlord must have a commercially reasonable ground, such as the transferee's weak covenant, an unsuitable use, or harm to the tenant mix.
It means the landlord may refuse a proposed assignment or sublease only on commercially reasonable grounds, not arbitrarily. Reasonable grounds usually include the proposed party's financial strength, the nature of its use, proposed alterations, and the impact on other tenants; a refusal outside those bounds can be challenged.
A recapture right lets the landlord respond to an assignment or sublease request by terminating the lease (or reclaiming just the affected space) instead of consenting. It lets the landlord re-lease at market and keep any profit the tenant hoped to earn by subletting below-market space, and it is most common in retail.
It can be. Many leases include a change-of-control clause that deems a merger, acquisition, or significant ownership change to be an assignment requiring landlord consent. That is why buyers review every material lease for assignment and change-of-control provisions during acquisition due diligence.