Subletting works like this: you rent your apartment, or a room in it, to someone else for part of your remaining lease term while your name stays on the original lease. The person moving in (the subtenant) pays you, and you keep paying the landlord. If the subtenant stops paying or trashes the place, the landlord looks to you, not to them. That single fact shapes every other decision in a sublet, from how carefully you screen the person to what you put in writing before they get the keys.
People sublet for a stretch away on a work assignment, extended travel, a partner’s place that makes more sense to live in, or simply to cut costs when a lease still has months to run. Done right, it’s a clean arrangement. Done casually, it can cost you your deposit, your apartment, or more.
Sublet or Assignment
These two get mixed up constantly, and the mix-up can sink a request before it starts. A sublease covers part of your remaining term, and you plan to come back. You stay a party to the original lease. An assignment transfers the whole remaining lease to a new tenant who then deals with the landlord directly, and you walk away.
If you intend to return, you want a sublease. If you’re done with the apartment entirely, you want an assignment. Many leases permit one but not the other, so the word you use in your written request matters. Read the specific clause before you ask.
What Your Lease and State Law Allow
Almost every residential lease has a clause titled something like “Assignments and Subletting.” It will take one of three positions: subletting is allowed, subletting requires the landlord’s prior written consent, or subletting is prohibited.
A flat prohibition isn’t always the end of the conversation. A majority of states have laws preventing landlords from unreasonably withholding consent when the tenant presents a qualified replacement. Rejecting a subtenant who has adequate income, a clean rental history, and no criminal record will usually cross the “unreasonable” line. Local ordinances can layer on additional rules, including occupancy caps and required response timelines.
Even in states that protect your right to sublet, you have to follow the procedure. Skip a step and a legally protected sublet becomes an unauthorized one, which gives the landlord grounds to evict. Read the lease, look up your state’s landlord-tenant statute, and follow every step.
How to Ask the Landlord
Put the request in writing even if your landlord is friendly about it. A written request creates a record and starts any legally mandated response clock. Send it by certified mail with return receipt, or use whatever delivery method the lease specifies. Include:
- The subtenant’s full name and current address
- Proposed move-in and move-out dates
- The reason you’re subletting
- An offer to provide credit or background check information if the landlord wants to run their own
In many jurisdictions landlords have a set window to respond, commonly between ten and thirty days. Some states treat silence past that window as implied consent. Others don’t, so don’t assume silence means yes unless your statute or lease says so explicitly. If the landlord denies the request, ask for the specific reason in writing. An unsupported denial may give you grounds to sublet anyway or to break the lease early without penalty, depending on local law.
What Goes in the Sublease Agreement
The sublease is a contract between you and the subtenant. The landlord isn’t a party to it but should receive a copy. The agreement needs to cover, at minimum:
- Full legal names and current addresses for both parties
- The exact address and a description of what the subtenant can use, whether the whole apartment or one bedroom with shared common areas
- Start and end dates; the sublease cannot extend past your master lease
- Monthly rent, due date, payment method, and who the subtenant pays (almost always you, not the landlord)
- Security deposit amount and the conditions for its return
- Which utilities the subtenant pays, how shared costs are split, and whether accounts need to be transferred into their name
- A clause stating the subtenant agrees to follow all rules in the master lease, including pet, noise, and smoking policies
- What happens if either party needs to end the arrangement early
Template agreements are available from online legal document platforms and real estate associations, and they handle the usual boilerplate. Customize the template to your situation rather than signing a generic form. Pay particular attention to utilities. If accounts stay in your name and the subtenant runs up a large bill, the utility company bills you. Require proof of account transfer before handing over keys.
Insurance
Your renters insurance almost certainly does not cover the subtenant’s belongings or liability. If the subtenant starts a kitchen fire or a guest slips in the bathroom, neither of you may be covered unless the subtenant carries their own policy. Make a renters policy a condition of the sublease. It’s cheap and it protects both sides.
Call your own insurer too. Some treat subletting as a material change in risk and may void coverage if you don’t notify them.
Rent, Deposits, and Overcharging
You still owe the landlord full rent on time every month regardless of whether the subtenant pays you. Set the subtenant’s due date several days before your own, so you have a buffer to confirm funds have cleared. If the subtenant pays late, the late fee your landlord charges is yours to eat unless your sublease passes that cost through.
Collect a security deposit, typically one month’s rent, though your state may cap it lower. Roughly half the states impose a statutory maximum; the rest leave it to the parties. Once you hold that deposit, you step into the landlord’s shoes for deposit law. You may be required to keep the funds in a separate account, pay interest in some jurisdictions, and return the money within a set window after move-out. Deadlines range from about fourteen to thirty days depending on the state, and most states require an itemized list of deductions with receipts. Mishandling a deposit can expose you to penalties of double or triple the deposit in some jurisdictions.
In cities with rent control or rent stabilization, you generally cannot charge the subtenant more than the regulated rent. Some ordinances allow a modest surcharge for furnished apartments. Deliberate overcharging can trigger steep penalties, including refunds of several times the overcharge. Even outside rent-controlled areas, charging well above your own rent tends to invite trouble and makes the room harder to fill. Most subletters charge what they pay, or slightly less.
Choosing a Subtenant: Fair Housing Rules Apply to You
Federal law doesn’t care that you’re a tenant and not a landlord. Once you advertise a sublet and pick an occupant, the Fair Housing Act applies. Under 42 U.S.C. § 3604, it is illegal to refuse to rent a dwelling or to publish any advertisement indicating a preference based on race, color, religion, sex, disability, familial status, or national origin.1Office of the Law Revision Counsel. United States Code Title 42 Section 3604 The advertising prohibition has no exemptions for small properties or owner-occupied buildings. Screen on financial qualifications and rental history, not on who the applicant is.
Taxes on the Rent You Collect
Rent from a subtenant is income the IRS expects to see. Report it on Schedule E (Form 1040) as rental income.2Internal Revenue Service. Instructions for Schedule E (Form 1040) You can deduct the rent you pay your landlord as a rental expense, along with directly related costs like advertising and a share of utilities. If you rent out only a room, split expenses between the rental portion and the personal portion using a reasonable method such as square footage or room count. If the subtenant pays any of your expenses directly, like a utility bill, that counts as rental income too.3Internal Revenue Service. Publication 527, Residential Rental Property
When the Subtenant Stops Paying or Won’t Leave
The landlord’s recourse runs through you, not the subtenant. If the subtenant skips rent, the landlord still expects their check from you. If the subtenant damages the apartment, the landlord deducts it from your deposit. This is the fundamental risk of subletting, and paperwork reduces it but doesn’t eliminate it.
If the subtenant defaults, you keep paying the landlord while chasing the subtenant for the missed rent. Small claims court is an option, but it takes time and the money may never show up. A clear late-fee clause and a real security deposit give you some cushion.
A subtenant who refuses to leave after the sublease ends is the worst version of this. If your master lease is also ending, you may be unable to hand the apartment back to the landlord, which can trigger holdover penalties that run well above normal rent. You cannot change the locks, remove belongings, or shut off utilities. Every state requires formal eviction: written notice, a court filing, a hearing, and law enforcement if it comes to that. Self-help evictions are illegal almost everywhere and expose you to serious liability.
Prevention is the real protection. Screen thoroughly. Leave a generous buffer between the sublease end date and your master lease expiration so you have time for legal remedies if you need them. Include an explicit holdover clause with a daily penalty rate if the subtenant stays past the agreed date.
Why You Shouldn’t Sublet Without Permission
Skipping approval feels easier until it isn’t. An unauthorized sublet is a lease violation in most jurisdictions, and many landlords treat it as grounds for immediate eviction. Even where a first offense rarely leads to eviction, it gives the landlord leverage to refuse a renewal or deny a future sublet request. You also remain fully liable for any damage the subtenant causes, with no argument that the landlord accepted the arrangement by not objecting. If your landlord seems difficult, the answer is to work the formal process, not to hope nobody notices.