A lease assignment moves the whole leasehold to a new tenant, but the abstract has to answer one question the document buries: is the old tenant still on the hook? Upload the assignment, the assumption agreement, and the landlord consent, and get the parties, effective date, consent standard, assumption language, release or continuing-liability terms, recapture rights, and any profit-sharing pulled into structured fields, each citing its source page.
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An assignment looks like a simple handoff until rent goes unpaid and everyone argues over who owes it. Almost every dispute traces to one of the provisions below being unread, because the answer is split across the assignment, a separate assumption agreement, and the landlord's consent letter. Each row names the provision, says what it controls, and states the consequence when it is missed.
| Assignment provision | What it controls | What it costs when it is missed |
|---|---|---|
| Assignor, assignee, and effective date | Who is transferring out, who is taking over, and the date the leasehold actually changes hands | A roll that never updates the tenant of record bills and chases the wrong party, and a critical-date calendar keyed to the old tenant misses the new one's options entirely |
| Landlord consent and the consent standard | Whether the landlord consented, and whether the lease required consent at all or set a reasonableness standard | An assignment made without required consent can be a default that lets the landlord terminate. Missing the consent letter means nobody knows if the transfer is even valid |
| Assumption of obligations | Whether the assignee expressly assumed the lease obligations, or merely took the space | Without a written assumption the landlord may have no privity of contract with the new tenant, and enforcement runs only against the departed assignor |
| Release of the assignor | Whether the original tenant was released, or remains secondarily liable for the balance of the term | This is the money question. An assignor who assumed it was released, but was not, still owes the rent if the assignee defaults. Most assignments do not release the assignor |
| Recapture and landlord termination right | The landlord's right to terminate the lease instead of consenting, taking the space back rather than approving the transfer | A tenant that negotiated an assignment discovers the landlord can recapture the premises and the deal, and the value of the leasehold, evaporates |
| Profit sharing and excess consideration | Whether the landlord takes a share of any rent or lump sum the assignor collects above the lease rent | Assignment profit-sharing clauses hand the landlord 50 to 100 percent of the upside. An assignor that models a gain on the transfer without reading it keeps far less than expected |
| Guaranty carryover and new guaranty | Whether an existing personal or corporate guaranty survives the assignment, and whether a new guaranty was required from the assignee | A guarantor who thought the assignment ended the guaranty stays bound, or a landlord loses credit support because the old guaranty did not carry and no new one was taken |
An assignment is rarely one page. Getting it right means reading the assignment, the assumption agreement, and the landlord consent together and reconciling what each one actually says about liability.
The assignor, the assignee, the underlying lease it references, and the exact date the leasehold transfers, so the tenant of record and the calendar move to the right party.
Whether the landlord consented, whether consent was required, and the standard the lease set, so an assignment made without required approval gets flagged as a possible default.
Whether the assignee expressly assumed the lease, creating privity with the landlord, or merely took possession, which decides who the landlord can actually enforce against.
The single most important field: whether the assignor was released, or remains liable for the term if the assignee defaults. Most assignments keep the assignor on the hook.
The landlord's right to terminate and take back the space instead of consenting, captured with the notice window and any share-of-profit alternative.
Whether the landlord shares in excess consideration on the transfer, and whether an existing guaranty survives or a new guaranty was required from the assignee.
From an assignment, an assumption agreement, and a consent letter to one reconciled record that answers who is liable, with a source citation per field.
The liability answer is split across documents. Include the assignment and assumption agreement, the landlord consent letter, the underlying lease, and any guaranty. Scans are fine.
The model returns the assignor and assignee, effective date, consent and consent standard, assumption language, release or continuing-liability terms, recapture rights, profit sharing, and guaranty carryover as structured fields.
Each field links to its source page. The output flags whether the assignor was released, whether the assignee assumed the obligations, and whether the landlord took a profit share or reserved a recapture right.
Push the parties, dates, and liability terms to Excel, CSV, JSON, or the API, so the tenant of record updates and the assignee's critical dates land in your calendar.
Last updated July 2026. What a lease assignment is, how it differs from a sublease, whether the assignor stays liable, and why consent, assumption, and recapture terms decide the deal.
A lease assignment is the transfer of a tenant's entire remaining interest in a lease to a new tenant, the assignee, who steps into the original tenant's shoes for the balance of the term. Unlike a sublease, which carves out part of the space or time and leaves the original tenant as the party the landlord deals with, an assignment hands over the whole leasehold. Abstracting it means pulling the parties, dates, consent, assumption, and liability terms out of the assignment, the assumption agreement, and the landlord consent, and reconciling them into one record.
The reason it deserves its own abstraction is that the document almost never states plainly the one thing everybody needs to know: whether the departing tenant is still liable. That answer is assembled from the release language, the assumption, and the underlying lease read together. The related distinction is covered in the explainer on commercial lease assignment versus subletting, and the neighboring document type is on sublease abstraction.
Usually yes. Under most commercial leases and general contract law, an assignment does not release the assignor unless the landlord expressly agrees to a release, which is a novation. Absent that written release, the original tenant remains secondarily liable for the rent and obligations for the balance of the term, so if the assignee defaults, the landlord can pursue the assignor. This is the field most often misread, and the reason an assignment abstract has to capture the release language precisely.
An assignment transfers the entire remaining leasehold to a new tenant, who deals directly with the landlord. A sublease transfers only part of the space or a portion of the term, and the original tenant stays in the chain as sublandlord, remaining fully liable to the landlord and collecting from the subtenant. Assignments raise release and recapture questions; subleases raise recapture, profit-sharing, and recognition questions. The abstract fields differ accordingly.
Almost always. Standard commercial leases prohibit assignment without the landlord's prior written consent, often qualified by a standard that consent will not be unreasonably withheld, conditioned, or delayed. Some leases give the landlord sole discretion, and many pair the consent right with a recapture right to terminate instead. An assignment made without required consent can be a default that lets the landlord terminate the lease, which is why the consent letter is a required document in the abstract.
An assignment and assumption agreement is the two-part instrument that both transfers the lease from assignor to assignee and has the assignee expressly assume the lease obligations going forward. The assumption half matters because it creates privity of contract between the landlord and the new tenant, letting the landlord enforce the lease directly against the assignee. Without a written assumption, the landlord's enforcement may run only against the departed assignor.
These deals surface options, escalations, and renewal notices keyed to the new tenant, which feed the calendar handled by critical date extraction, and the underlying rent schedule that belongs on the commercial lease abstract template.
A recapture right lets the landlord terminate the lease and take the space back rather than consent to a proposed assignment or sublease. It is a landlord's tool to capture rising market rent: if a tenant wants to assign at a profit, the landlord recaptures the premises and re-leases at market itself. A tenant that negotiates an assignment without checking for a recapture clause can lose both the deal and the leasehold value it expected to realize.
Yes, and the portfolio case is where the liability question gets expensive by hand. The model reads each assignment with its assumption agreement and consent letter, returns the parties, dates, consent standard, assumption, release or continuing-liability terms, recapture, and profit sharing as structured fields, and flags the transfers where the assignor was not released. Accuracy depends on scan quality, and every published accuracy figure in this category is self-reported, so test on your own worst-scanned assignment first. For the asset-level view, see lease abstraction for asset managers, and the general tool is on lease abstraction software.
Still have questions? Our team is happy to help.
Talk to our teamThe transfer of a tenant's entire remaining leasehold interest to a new tenant, the assignee, who takes over the lease for the balance of the term. Unlike a sublease, an assignment hands over the whole lease and the assignee deals directly with the landlord.
Usually yes. An assignment does not release the assignor unless the landlord expressly agrees to a release, or novation. Absent that written release, the original tenant remains secondarily liable for rent for the balance of the term if the assignee defaults.
An assignment transfers the entire remaining leasehold to a new tenant who deals directly with the landlord. A sublease transfers only part of the space or term, and the original tenant stays liable as sublandlord and collects from the subtenant.
Almost always. Standard leases prohibit assignment without prior written consent, often with a standard that consent will not be unreasonably withheld. An assignment made without required consent can be a default that lets the landlord terminate.
The instrument that both transfers the lease from assignor to assignee and has the assignee expressly assume the lease obligations. The assumption creates privity between the landlord and the new tenant, letting the landlord enforce the lease against the assignee directly.
A landlord's right to terminate the lease and take the space back instead of consenting to a proposed assignment. It lets the landlord capture rising market rent by re-leasing itself, and it can wipe out the value a tenant expected from the transfer.
Yes. The model reads each assignment with its assumption and consent letter, returns the parties, dates, consent standard, assumption, release terms, recapture, and profit sharing as structured fields with source citations, and flags transfers where the assignor was not released.
The neighboring transfer where the original tenant stays liable.
Learn moreWhether a guaranty survives the assignment.
Learn moreMove the assignee's options and renewals onto the calendar.
Learn moreThe full field list the assignment sits inside.
Learn moreDiligence-grade assignment and consent review.
Learn moreThe full overview of our AI lease abstraction tool.
Learn more