Subletting without written landlord permission is the fastest path to eviction in the United States. Most residential leases include an anti-subletting clause, and most states enforce it. Unless your lease explicitly permits subletting — or your state's law carves out tenant rights — you need written consent before handing keys to anyone else. The original tenant stays personally liable for rent and damages regardless of who is actually living there.
What subletting means and how it differs from assignment
A sublease is a tenancy within a tenancy. The original tenant (the sublessor) grants a third party (the subtenant) the right to occupy all or part of the rental unit for a period that does not exceed the original lease term. The original lease stays in force throughout. Two legal relationships run simultaneously: the original tenant owes rent and compliance to the building owner, and the subtenant owes rent and compliance to the original tenant.
An assignment is structurally different. Under an assignment, the original tenant transfers the entire remaining lease interest to a new party and exits the relationship — unless the landlord required a personal guaranty. Courts in most states treat the full transfer of leasehold interest as an assignment and a partial transfer or limited-term grant as a sublease. If your lease bars "subletting or assigning," both transactions require the landlord's permission.
Does the landlord have to say yes?
Probably not — but the answer depends on your state and your specific lease. The default common-law position is that landlords can refuse for any reason or no reason at all. Several states have modified this by statute.
New York (Real Property Law § 226-b): tenants in buildings with four or more units have a statutory right to sublease, subject to written landlord consent. The landlord must respond within 30 days. Silence constitutes consent under § 226-b(2). A landlord who refuses on unreasonable grounds cannot evict based solely on the unauthorized sublease.
California (Civil Code § 1995.310): landlords cannot withhold consent unreasonably in leases that require consent but do not grant absolute discretion. San Francisco Rent Ordinance § 10.21 extends additional protections to rent-controlled tenants who temporarily sublet while away.
Hawaii (Revised Statutes § 521-37): unless a written rental agreement restricts the right, a tenant may sublet without the landlord's consent. Where the rental agreement does require consent, courts apply a reasonableness standard to any withholding.
Washington State: Washington's Residential Landlord-Tenant Act (RCW 59.18) does not grant a statutory right to sublet; the lease controls. Where a lease permits subletting with landlord approval, courts require that consent not be withheld on unreasonable grounds.
In Texas, Florida, and most other states, no statute modifies the landlord's absolute discretion. The lease controls, and courts enforce it literally.
How to read the consent clause in your lease
Find the assignment and subletting provision — often labeled "Assignment; Subletting," "Transfer of Interest," or "Occupancy." Three formulations appear most often:
- Absolute prohibition: "Tenant shall not sublet or assign this lease." No subletting permitted.
- Consent required, no standard stated: "Tenant may not sublet without Landlord's prior written consent." California Civil Code § 1995.310 can modify this if you are in California.
- Consent not to be unreasonably withheld: "Landlord's consent shall not be unreasonably withheld or delayed." The most tenant-favorable formulation short of blanket permission.
If the lease says nothing about subletting, the common-law default applies. In most states, that default gives the landlord full veto power. Silence is not permission.
How to request landlord consent properly
Get the request and the approval in writing. A text message saying "sure, go ahead" does not hold up in an eviction proceeding. A proper consent request states the proposed subtenant's name and contact information, the proposed sublease dates, the portion of the unit being sublet, and basic financial information about the proposed subtenant. Include a clear written request for a signed response.
Once the landlord agrees, the consent document should identify both the original lease and the proposed sublease, confirm the scope of permission, and state whether the landlord releases the original tenant from liability — which in residential leases almost never happens.
What the sublease agreement must cover
A free US sublease agreement template provides the base contract between original tenant and subtenant. The landlord's signed consent attaches as an exhibit. Several terms are non-negotiable:
Rent: the sublease rent cannot exceed the master lease rent in rent-regulated jurisdictions. New York City rent-stabilized tenants who charge above the legal regulated rent commit rent overcharge under the Rent Stabilization Code — a liability that reaches back six years under the Housing Stability and Tenant Protection Act of 2019.
Term: the sublease must expire on or before the master lease expiration date. A sublease that runs past the master lease is voidable by the landlord and creates unauthorized holdover exposure.
Security deposit: state statutes apply to subleases the same way they apply to direct tenancies. California Civil Code § 1950.5, as amended by AB 12 effective July 1, 2024, caps deposits at one month's rent for most landlords (a two-month cap is preserved only for small landlords owning no more than two properties with four or fewer units total, held in their personal name or a family trust). New York General Obligations Law § 7-108 caps deposits at one month's rent statewide. The original tenant holds this deposit in a fiduciary capacity toward the subtenant.
Permitted use and house rules: the subtenant cannot use the premises for any purpose the master lease prohibits. Building rules incorporated into the master lease — noise hours, guest policies, parking — pass through to the subtenant. Courts hold the sublessor responsible for subtenant violations of those rules.
The liability structure: who owes what to whom
The sublessor sits between two parties and owes obligations to both. Against the landlord, the sublessor carries the same obligations as any tenant under the master lease: timely rent, compliance with lease covenants, return of the unit in acceptable condition. The sublease creates a parallel set of obligations running to the subtenant.
When the subtenant defaults — stops paying, damages the unit, abandons the apartment — the sublessor must still pay the landlord and remedy the damage. The sublessor then sues the subtenant for breach of the sublease. This two-track liability structure is why screening subtenants carefully and requiring a security deposit matters before any key changes hands.
State rules that catch tenants off guard
San Francisco: Administrative Code Chapter 37 protects rent-controlled tenants who sublet a room as a one-for-one replacement of a departing co-tenant. A landlord who fails to respond to a written sublease request in writing within 14 days is deemed to have consented, and cannot evict based solely on the subletting as long as the original tenant continues to reside in the unit.
Chicago: RLTO § 5-12-120 prohibits landlords from charging a processing fee for sublease requests in covered units. Such fees are unenforceable.
New Jersey: New Jersey does not grant a general statutory right to sublet. Absent an express lease prohibition, courts have recognized a common-law right to transfer a leasehold interest, but standard residential leases typically require landlord consent, which landlords must not withhold arbitrarily or in bad faith.
Texas: no statute grants residential tenants any subletting right. Texas courts enforce anti-subletting clauses as written, and an unauthorized sublease is grounds for immediate lease termination under the Texas Property Code.
Short-term rentals are not exempt
Listing an apartment on Airbnb or VRBO without checking the master lease first is a common and costly mistake. Most residential leases drafted after 2016 include explicit short-term rental prohibitions, often broad enough to cover any arrangement under 30 days. New York City's Local Law 18 of 2023 bars short-term rentals in most apartments unless the host is physically present and only one guest rents at a time; fines reach $5,000 per listing. Boston, San Francisco, and Chicago each have separate registration requirements that apply to the tenant directly, not just the landlord.
What happens if the sublease is unauthorized
An unauthorized sublease gives the landlord the right to terminate the master lease. Most landlords start with a cure-or-quit notice — typically 3 to 10 days depending on the state — requiring the tenant to remove the unauthorized occupant. Failure to cure leads to unlawful-detainer proceedings against both the original tenant and the subtenant. The original tenant also risks losing the security deposit and faces a civil damages claim for any rent or costs the landlord incurs.
In New York, an unauthorized sublease in a rent-stabilized unit is a lease violation but not automatic eviction grounds. The landlord must prove permanent vacatur, not just temporary absence. Courts distinguish between a tenant who subleases a room while remaining present (generally protected under RPL § 226-b) and a tenant who abandons the apartment while collecting rent from a subtenant indefinitely (a violation under § 226-b(3)).
Practical steps before handing over keys
Read the master lease in full, looking at every clause mentioning "assignment," "sublease," "transfer," or "occupancy." Send the consent request in writing and keep a timestamped copy. Wait for a signed written approval — verbal agreement won't hold in an eviction proceeding. Draft a written sublease and attach the landlord's consent as an exhibit. Screen the subtenant: verify income, check references, and run an eviction history check. Collect a security deposit and hold it under your state's security-deposit statute. Give the subtenant a complete copy of the master lease so they know which building rules bind them.
Skipping any step leaves the original tenant carrying the full legal and financial risk of the arrangement, with limited written recourse against the person actually living in the unit.
Need the document itself? Download the free template →
This article is general information, not legal advice — see our accuracy & editorial policy. Confirm the cited law is current before relying on it.