Scenario for the board: two names on a market-rate two-bedroom lease in Queens. My roommate is leaving at the end of September. We have a replacement lined up, and the landlord has said over the phone that a 'roommate swap' is fine, but they don't want to amend the lease or re-do the security deposit paperwork.

The original deposit is one month's rent, half from each of us. The outgoing roommate wants the incoming person to pay him his half directly. The incoming person is fine with that. I'm the one who stays, and honestly this feels like it's going to turn into a dispute when the lease ends. If the new person pays the old roommate directly, does the new person have any claim to the deposit held by the landlord? Or do I become the only person legally connected to the original deposit?

I already know not to let this be a handshake. I just want to know what I should actually ask for in writing before anyone moves in.

Don't let anything move through Venmo until the deposit pieces are in writing. I've seen too many moving-day disasters where the new person pays the old roommate, then the old roommate leaves the group chat and the new person expects you to be their bank.

If the landlord won't amend the lease, at minimum do a signed one-page roommate agreement with the deposit split, move-in condition, and how notice works. You stay as the original tenant, so you're on the hook if the new person bounces.

You're right to pause. Under a typical NYC lease, the security deposit is treated as one fund held by the landlord for the tenants named on the lease. If the landlord won't release the old roommate or accept a new deposit from the incoming person, the old roommate remains legally entitled to that deposit at the end of the tenancy, even if they moved out years ago. That's the core problem.

The cleanest options, in order:

1. Get the landlord to amend the lease or add the incoming roommate as a co-tenant and issue a new deposit receipt. This rarely happens with small landlords, but it's worth asking in writing.
2. If the landlord won't amend, have the outgoing roommate sign an assignment of their deposit interest to the incoming person. Include the exact amount, the effective date, and the condition of the room.
3. Do not have the new roommate pay the outgoing roommate directly unless the assignment is signed first and the remaining tenant gets a copy.

I'd also photograph the departing roommate's room and common areas the morning they leave, with the incoming roommate present. That prevents the 'this damage was here before me' argument later. If the landlord later deducts from the deposit, you'll need to know whose share should absorb it.

Good list, astoria_arch. One thing I'd add is that the assignment has to be clear about the timing. If the outgoing roommate lived there for part of the year and the incoming person lives there for the rest, the deposit interest should be apportioned or waived in the agreement. Same with any existing damage.

I'd phrase it as: the outgoing roommate's share is reduced by any damage attributable to their room or shared areas through the move-out date, then assigned to the incoming roommate after payment. If you keep the old roommate's name on the deposit account and the landlord sends the annual notice, you may have to remind them that interest belongs to the assigned portion. It's often pennies, but it's a good test of whether the paperwork is real.

Wait, does the new person become a legal tenant just by living there 30 days even if they're not on the lease? I've heard that from a super and it always sounded like barstool law.

Not exactly a lease tenant, but they can become an occupant with rights under New York's roommate and housing court rules. If they've lived there for more than 30 days and get mail, packages, and keys, the remaining leaseholder can't simply change the lock. They may be entitled to notice before removal, and if the landlord knows they're there and accepts rent from them, the line between occupant and tenant gets blurry.

That's why written consent and a roommate agreement matter. The lease may also have a clause about unauthorized occupants, so 'the landlord said it was fine on the phone' is worthless if a building manager later decides to enforce it.

Right, and if it's a six-unit building or more the security deposit has to sit in an interest-bearing account. Who gets the interest in a swap? That's another tiny amount nobody wants to argue about but definitely will.

HamiltonHeights_H, yes, the interest goes to the person or people whose money is in the deposit, which is why the assignment should mention it. In a straight assignment, the incoming roommate steps into the outgoing roommate's shoes for the assigned share, including any statutory interest that accrues after the assignment date.

If the landlord pays interest at the end, the remaining tenant should not be the one doing the math from memory. Put it in the agreement: 'security deposit interest shall be apportioned according to each party's share as of the effective date.' If the amount is de minimis, say so explicitly and have both sides waive it in writing. Handshake waivers expire the first time someone is mad about cleaning fees.

A version I've used with roommates actually included a small table in the agreement:

• Outgoing roommate's share of deposit: [amount]
• Incoming roommate payment: [amount]
• Effective date of assignment: [date]
• Move-out condition: [list of the room, closet, hallway, bathroom]
• Agreed deductions from outgoing share prior to assignment: [itemized]

The landlord doesn't need to sign it unless they're releasing someone, but I always send a copy with a cover note saying 'for your records' so there's a paper trail. If the landlord later refuses to recognize the new person, at least the roommates have a contract between themselves. It won't beat the landlord, but it will settle who owes what if the group splits.

Question for the two long-writers: does the outgoing roommate have to keep paying rent until the new person actually moves in? My last co-tenant tried to leave on the 12th and claimed he only owed through the 10th because that's when he handed me the keys. I was stuck.

HamiltonHeights_H, unless the lease is amended, yes. The outgoing roommate remains liable to the landlord for rent through the end of the lease term, or until the landlord formally releases them. An arrangement between roommates can change who ultimately pays, but it can't erase that liability against the landlord.

In practice, you can agree among yourselves that rent is prorated through the move-out date and again from the move-in date, but the outgoing roommate should not get their deposit share back until all rent and utilities are current and any condition issues are settled. I'd also make clear in the same agreement that the incoming occupant is not acquiring the original tenant's lease terms.

To wrap it up for the OP: if you're the remaining tenant, the sequence that usually works best is:

1. Get the landlord's consent in writing to the replacement, even if it's just an email reply.
2. Have the incoming roommate sign a roommate agreement that names the existing lease, the rent split, the deposit share, and notice requirements.
3. Have the outgoing roommate sign a deposit assignment that transfers their share to the incoming roommate after payment, with an effective date.
4. Photograph the condition of the room and common areas together before the new person moves in.
5. Don't move any money until all three of you have signed and saved copies.

If the landlord refuses to put consent in writing, you're taking a real risk. A replacement roommate without written consent can put the whole lease at risk, and without a deposit assignment, the outgoing roommate will still be the one who can claim the money later. The fact that this is common doesn't make it less messy.