Bringing a new roommate into a place you already rent is not as simple as handing them a key. In most rentals, the people living in the unit need to be on the lease, and adding someone means getting your landlord’s approval and updating the paperwork. Skipping that step can put your own tenancy at risk.
This guide covers when you need landlord approval, the steps to add someone properly, and what to sort out between roommates before you do.
Quick Facts
| Question | Short answer |
|---|---|
| Do I need landlord approval? | Almost always yes. Most leases require it before anyone new moves in. |
| What paperwork is involved? | Usually a lease amendment or addendum, or a new lease with both names |
| Will the new roommate be screened? | Often yes. Landlords may run the same application, background, or credit check. |
| Can the rent change? | Sometimes. Some landlords adjust rent or the deposit when occupancy changes. |
| What if I skip approval? | You risk violating your lease, which can jeopardize your tenancy |
Why You Usually Need Landlord Approval
Most leases specify who is allowed to live in the unit and require the landlord’s consent before anyone new moves in. Adding someone without approval, even a partner or a friend, can count as a lease violation. That is a real risk to your own housing, so it is worth doing correctly.
Getting the new person onto the lease also protects you. Once they are a named tenant, they share formal responsibility for rent and for the terms of the lease, rather than living there informally with no obligations on paper.
Step 1: Review Your Current Lease
Start by reading your lease for anything about occupancy limits, guests, and adding tenants. Look for clauses on maximum occupants, how long a guest can stay before they count as a resident, and the process for requesting a change. This tells you what you are working with before you approach your landlord.
Step 2: Ask Your Landlord
Contact your landlord or property manager and request to add a roommate. Put the request in writing so there is a record. Be ready for the landlord to want the same information they would collect from any new applicant.
Step 3: The New Roommate Applies and Is Screened
Landlords commonly require an incoming roommate to go through the standard process: a rental application, and often a background or credit check. Approval is not guaranteed, so it is wise not to promise the new person a move-in date until the landlord signs off. If you are still deciding on the person, our questions to ask a potential roommate can help you screen for fit first.
Step 4: Sign the Updated Paperwork
Once approved, the change is usually made one of two ways. The landlord may prepare a lease amendment or addendum that adds the new person to the existing lease, or they may issue a new lease naming all current tenants. Either way, everyone typically signs. Read the updated document carefully for any changes to rent, the deposit, or the lease end date.
Some landlords adjust the rent or ask for an additional deposit when occupancy changes, so confirm the numbers before signing.
Step 5: Sort Out the Details Between Roommates
Getting onto the lease handles the landlord side. The roommate side is just as important. Before or right after the new person moves in, agree on how rent, bills, and shared responsibilities will work, and put it in a roommate agreement. This is also the moment to sort out the deposit, since the new roommate’s contribution and how it is returned later should be recorded. Our explainer on the security deposit covers how deposits are typically handled.
What About Removing a Roommate?
Adding a person is often paired with removing another, for example when one roommate replaces another. Taking someone off a lease also generally requires landlord involvement and updated paperwork, and it can be more complicated than adding someone. If money problems are driving the change, see what to do when a roommate is not paying rent.
Frequently Asked Questions
Can I add a roommate without telling my landlord? It is risky. Most leases require approval before someone new moves in, and skipping that step can be a lease violation that threatens your own tenancy.
Will adding a roommate raise my rent? It can. Some landlords adjust rent or the deposit when the number of occupants changes. Confirm before signing anything.
Does my new roommate have to pass a credit or background check? Often yes. Landlords frequently screen an incoming roommate the same way they would any new applicant.
What paperwork adds a roommate to a lease? Usually a lease amendment or addendum, or a new lease listing all tenants. Everyone named typically signs.
Is a partner moving in treated the same way? Generally yes. A partner who moves in is usually still expected to be added to the lease, and the same approval process applies.
