Replacing a Roommate: The Complete Checklist

When do you start, and what do you settle before looking for a replacement?

The moment a roommate says they're leaving, the temptation is to post an ad that night. Pause. Before anyone new enters the picture, settle three things with the person leaving: the exact move-out date, what happens to their share of the deposit, and until when they're responsible for their share of rent and bills. Without those, you're negotiating with a replacement before you know what you're offering.

The delicate part is usually the deposit, because the landlord holds it until the tenancy ends. The common fix: the incoming roommate buys out the leaver's share, paying them directly the amount they originally put in. The deposit with the landlord stays whole and simply changes hands inside the house, so nobody waits for the end of the lease to get their money back. Splitting the rental deposit between roommates covers the details.

The checklist: six steps to replace a roommate with no loose ends

Once the principles are agreed with the person leaving, work through these in order. Every skipped step tends to come back as a problem a month or two later:

1. Put the move-out date and the deposit handover in writing. The exact date the room is vacated, and the deposit amount the replacement pays the leaver directly. One moment of written agreement saves two months of "but you said".
2. Document the state of the room and the shared areas. Photograph the room being vacated and the common spaces on changeover day: walls, floors, shared furniture, and the electricity and water meter readings. It protects the leaver from deductions for damage they didn't cause, and the newcomer from blame for damage that was already there.
3. Tell the landlord and get their approval. Most leases don't allow a new occupant without the landlord's consent. Get in touch early, introduce the replacement, and have the approval before the new roommate pays anything.
4. Update the lease. If the leaver's name is on it, fix it: an addendum that removes them and adds the newcomer, or a new lease. Don't leave someone on the lease for a home they no longer live in. They stay legally responsible, which is bad for everyone.
5. Move over everything that's in the leaver's name. Utility and internet accounts, any local tax or council registration, standing orders and autopays. Go through the list one by one; the forgotten account is always the one that causes a mess three months later.
6. Reset the shared balances and set the new split. Close the balance with the leaver up to move-out day (what they owe or are owed), then define the split with the newcomer. New household, new split, a clean balance from zero.

What happens to the deposit when one roommate leaves?

This is the question that stalls most roommate changeovers, because the deposit sits with the landlord until the tenancy ends, and the person leaving wants their money now, not in a year. The clean solution leaves the landlord's money untouched: the incoming roommate pays the leaver directly what the leaver originally put in. The deposit stays exactly as it was; that share now belongs to the newcomer.

Check two things before money moves. First, that the state of the home was documented on changeover day, because if damage turns up at the end of the tenancy you need to know whether it predates the newcomer. Second, that everyone agrees on the amount: if the deposit wasn't split evenly to begin with, say because the rooms aren't equal, the newcomer repays exactly what the leaver put in, not an average. Where deposits are registered to named tenants, ask the landlord or agent to update that record as well.

The lease and the landlord's consent: what has to be updated?

If the leaver's name is on the lease, replacing them isn't only an internal matter between housemates; it touches the contract with the landlord. First, check what the lease says about bringing in new occupants. Most require the landlord's written consent to swap a tenant, and some forbid it without prior arrangement. Don't assume it's fine. Ask first.

Second, actually amend the contract. Two routes are common: an addendum to the existing lease that removes the leaver and adds the newcomer, or a completely new lease. What matters is that the document reflects who really lives there and who is responsible for what. A roommate who stays on the lease of a home they've left stays legally exposed: if the others stop paying, the claim can reach them too (the same logic that applies when a roommate on the lease stops paying rent). The details vary by country and by contract, so read yours, and close this properly rather than in passing.

The new roommate is in. How do you start clean instead of inheriting a mess?

The most common mistake with a new roommate is carrying on the old accounts as if nothing happened. A home with a new lineup is a new home: the split may have changed if the rooms differ, the balance needs to reset, and the newcomer shouldn't inherit an old debt created before they arrived. Close the balance with the leaver up to move-out day, then open a clean page.

It's also the natural moment to bring the newcomer up to speed on how the house works, not just who lives here: how expenses are split, how chores run, what the expectations are. If you have a roommate agreement, go through it together and update the names, along with the house rules. If you don't, a changeover is an excellent excuse to start one.

This is where Homies makes the moment simple: when the household changes, you add the new roommate to the home, set the split again, and the balance resets for everyone at once, with no spreadsheet to rewrite and no manual math about who owed whom from the previous era. Homies runs the shared home: expenses, chores, the shopping list, and who's home, with one signup for everyone who lives there. It's in closed beta on iPhone and Android; join now to get in early, free while we build it, so the next changeover takes five minutes instead of an evening.

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