A sublet lease is an arrangement where you, as the current tenant, rent out all or part of your unit to someone else while your own lease with the landlord stays intact. You become a middleman: still fully responsible to the landlord for rent and the condition of the property, and now also acting as a landlord to the person moving in. People commonly sublet when they need to relocate temporarily, travel for work, or leave before the lease ends without paying early termination fees. The rules vary significantly by state, so what follows applies broadly but not universally.
Two Separate Relationships Stacked on Top of Each Other
A sublease creates two distinct landlord-tenant relationships. Your original lease with the landlord continues unchanged. A second agreement forms between you (now the sublessor) and the new occupant (the subtenant). The landlord sits at the top of the chain. You sit in the middle, owing obligations upward to the landlord and downward to the subtenant. The subtenant sits at the bottom with no direct legal relationship with the landlord at all.
That missing link between the subtenant and the landlord is the defining feature. If the subtenant stops paying rent, the landlord pursues you, not them. You then have to chase the subtenant separately. If the subtenant damages the unit, you pay the landlord for repairs and try to collect from the subtenant afterward.
Sublet vs. Assigning the Lease
Subletting and assigning get confused constantly, but they are not the same thing. In a sublease, you keep a stake in the lease. You retain the right to move back when the sublease ends, and you remain liable to the landlord throughout. In an assignment, you transfer your entire remaining interest to a new person. That new tenant steps directly into your shoes and deals with the landlord directly.
The difference shows up most when something goes wrong. With an assignment, the new tenant typically becomes directly responsible to the landlord, and in many cases the landlord releases you from future obligations. With a sublease, you never escape liability. If the subtenant trashes the apartment or disappears, you absorb the financial hit. Before you hand anyone the keys, know which arrangement you are actually entering.
Getting Your Landlord’s Permission
Most residential leases either prohibit subletting outright or require written landlord permission first. Ignoring that requirement is one of the fastest ways to get evicted. An unauthorized sublease can be treated as a lease violation, and the landlord can begin eviction against both you and your subtenant while also pursuing you for damages.
Submit a written request that includes the proposed subtenant’s name, the sublease dates, the rent amount, and anything else your lease asks for. Some landlords will want to run their own background or credit check. In many states, where a lease requires landlord consent, the landlord cannot refuse without a legitimate reason. Common legitimate grounds include the proposed subtenant’s poor credit, inability to pay rent, or a planned use that violates the lease. A refusal based on nothing more than a general dislike of subletting may not hold up, depending on local law.
What a Written Sublease Should Cover
A handshake deal is a bad idea. Put the sublease in writing and cover at least:
- Start and end dates, which cannot extend beyond the original lease’s expiration.
- Rent amount, due date, acceptable payment methods, and late fees.
- Security deposit amount, conditions for deductions, and when it will be returned. In most states, you have to follow the same deposit rules that apply to landlords, including caps on the amount and deadlines for return.
- Who pays which utilities.
- Whether the subtenant gets the entire unit or specific rooms, and which common areas they can use.
- A clause requiring the subtenant to follow all rules in the master lease, with a copy attached or at least the relevant sections.
- Rules on pets, guests, noise, smoking, and anything else the original lease or landlord requires.
One point people often overlook: whether you can charge the subtenant more or less than you pay the landlord. Some leases and local laws restrict profiting on the spread. Others allow it. Check your lease language and local regulations before setting a sublease rent above your own.
What You Stay on the Hook For
This is where subletting gets genuinely risky. After handing over the keys, you remain fully liable to the landlord for rent, property damage, and every other lease obligation. If the subtenant stops paying, you still owe the full rent. If the subtenant punches a hole in the wall or floods the bathroom, you pay for repairs. The landlord was not a party to your sublease and does not care about it.
At the same time, you take on landlord-like duties toward the subtenant. In most states, that includes keeping the unit habitable, making necessary repairs, following proper notice before entering, and handling the security deposit according to local law. You also have the authority to evict the subtenant for violating the sublease, but you have to follow the same formal eviction procedure a landlord would. Changing the locks or putting their belongings on the curb is not an option.
Screen your subtenant the way a landlord would screen any applicant. Verify income, check references, and run a background check if your jurisdiction permits it. The financial risk of a bad subtenant lands on you.
The Subtenant’s Rights and Limits
A subtenant’s rights come from the sublease agreement, not the master lease. The subtenant pays rent to you, follows the sublease terms, and looks to you to fix problems with the property. If the heat breaks, the complaint goes to you, and you coordinate with the landlord.
Even without a direct contract with the landlord, the subtenant is still bound by the master lease’s rules. If the master lease bans pets, the subtenant cannot have a pet just because the sublease is silent on it. Any violation by the subtenant can trigger consequences for you, which in turn puts their housing at risk.
If you breach the sublease, say by failing to maintain the property or wrongfully locking the subtenant out, the subtenant can take legal action against you. Most states’ habitability protections apply to any residential rental, so a subtenant living with a broken furnace in January is not without recourse simply because they are subletting rather than leasing directly from the owner.
What Happens If the Master Lease Ends Early
A sublease can never outlast the original lease. If the master lease expires, gets terminated for nonpayment, or ends for any other reason, the sublease dies with it. The subtenant has no independent right to remain, regardless of how much time was left on the sublease.
That is a real vulnerability. If you get evicted or stop paying the landlord, the subtenant can lose their housing through no fault of their own. They might have a damages claim against you, but they will not get to stay in the unit. Before signing, a subtenant should ask whether you are current on rent and in good standing with the landlord. Some subtenants negotiate for the right to be notified if you default on the master lease, so they have time to find somewhere else.
Insurance Gaps
Insurance is one of the most overlooked parts of subletting. Your renters insurance does not cover the subtenant’s belongings or liability. If their laptop is stolen or they accidentally start a kitchen fire, your policy will not pay for their losses. The landlord’s property insurance covers the building, not any renter’s personal property.
Subtenants should get their own renters insurance. These policies are generally inexpensive and cover personal belongings, liability for damage the subtenant causes to the property, and temporary living expenses if the unit becomes uninhabitable. Review your own policy too, since some insurers treat subletting as a material change that could affect coverage.
Fair Housing Applies When You Pick a Subtenant
When you screen potential subtenants, federal fair housing law applies to you. The Fair Housing Act prohibits refusing to rent a dwelling based on race, color, religion, sex, familial status, national origin, or disability.1Office of the Law Revision Counsel. United States Code Title 42 Section 3604 Because subletting involves renting a dwelling, those protections reach the sublessor-subtenant relationship. Turning down a subtenant because they have children, follow a particular religion, or have a disability carries the same legal exposure a landlord would face.
Many states and cities add protected categories beyond the federal list, such as sexual orientation, gender identity, source of income, or immigration status. Check the rules in your area before advertising or interviewing. Penalties for violations can include compensatory damages, civil fines, and attorney fees.
Airbnb and Other Short-Term Platforms Count
Listing your unit on a short-term rental platform while you are away for a few weeks usually counts as subletting. Standard lease agreements rarely mention platforms by name, so tenants sometimes assume the restriction does not apply. It generally does. If your lease prohibits subletting or requires landlord consent, renting your unit to short-term guests without permission carries the same risks as any other unauthorized sublease: potential eviction and liability for damages.
Many cities also regulate short-term rentals directly through registration requirements, occupancy taxes, and caps on how many nights per year a unit can be rented. Violations can result in fines for you and legal problems for the landlord. If you are thinking about short-term subletting, get your landlord’s written approval and check local ordinances before you list the property.