NYC Roommate vs. Sublet Rules: How to Share an Apartment Without Creating a Lease Problem

Real Estate · Sep 16, 2026

For many New Yorkers, splitting rent with a roommate, partner, or family member is a financial necessity. New York law gives residential tenants important protections when another person moves into an apartment, but those protections have limits.

Under New York's Roommate Law, Real Property Law § 235-f generally regulates when a tenant may share an apartment with family members and additional occupants.

The rules depend in part on how many tenants are named on the lease. When a lease is signed by one tenant, the statute generally permits the tenant, the tenant's immediate family, one additional occupant, and that occupant's dependent children, provided the tenant or the tenant's spouse maintains the apartment as a primary residence. Different occupancy rules apply when two or more tenants are named on the lease.

The distinction between a legitimate roommate and a subtenant is particularly important. A tenant who continues living in the apartment while sharing it with a roommate is in a very different legal position from a tenant who leaves and gives another person possession of the apartment.

Understanding that distinction can help tenants avoid unnecessary lease-enforcement problems and Housing Court litigation.

1. The 30-Day Roommate Notification Requirement

One of the most commonly overlooked requirements of New York's Roommate Law is the obligation to identify an additional occupant.

Under RPL § 235-f(5), a tenant must inform the landlord of the occupant's name within 30 days after the occupant moves into the apartment. The same requirement applies when the landlord makes a written request for the occupant's name.

This does not mean that a landlord can simply prohibit a lawful roommate arrangement. The statute places limits on restrictions concerning residential occupancy.

However, failing to provide the required information can create a lease-enforcement issue, particularly if the landlord is already alleging other occupancy or lease violations.

For that reason, tenants should not rely solely on a verbal conversation with a landlord or management company.

A practical approach is to provide the occupant's name in writing and retain a copy of the communication. Although RPL § 235-f does not itself require certified mail for this particular notification, using a delivery method that creates a record can help establish when and how the landlord was notified.

2. Roommate or Subtenant? The Difference Matters

The critical question is not simply whether another person is paying money to live in the apartment.

The more important issue is who actually occupies and possesses the apartment.

A Roommate

A typical roommate arrangement looks something like this:

• The named tenant continues living in the apartment.
• The roommate lives there at the same time.
• The tenant and roommate share the apartment.
• The tenant remains responsible for the lease with the landlord.
• The roommate does not automatically become a subtenant simply because the roommate contributes toward rent or household expenses.

New York's Roommate Law provides important protection for qualifying arrangements.

For a lease signed by one tenant, § 235-f generally permits one additional occupant, along with the tenant's immediate family and the additional occupant's dependent children, subject to the statute's primary-residence requirement.

For leases signed by two or more tenants, different occupancy limits apply. The statute generally looks at the number of tenants specified in the lease and limits the total number of tenants and occupants, excluding dependent children.

A Subtenant

A sublet is different.

Suppose a tenant moves out of the apartment and allows another person to occupy all or substantially all of the apartment in the tenant's place. That arrangement may constitute a sublet or another transfer of possession rather than a protected roommate arrangement.

For certain tenants, New York's RPL § 226-b establishes a statutory procedure for subletting.

That statutory procedure is not universal. It generally applies to a tenant with an existing lease in a dwelling containing four or more residential units, and the statute excludes certain categories of housing, including public housing and proprietary cooperative apartments.

In smaller buildings and excluded housing, the lease and other applicable law may control.

3. Subletting Requires Following a Different Procedure

For tenants covered by RPL § 226-b, a sublet is not something that should simply be arranged informally.

The statute establishes a procedure for requesting the landlord's consent. The tenant must provide specified information concerning the proposed sublet and proposed subtenant, and the request must generally be sent by certified mail, return receipt requested.

The landlord can request additional information within the statutory period and must respond according to the procedure established by the law.

For a covered sublet, the landlord's written consent is required before the sublet begins, although consent may be deemed granted if the landlord fails to provide a timely written response as required by the statute.

The tenant also remains responsible for obligations under the original lease.

Importantly, RPL § 226-b provides that a sublet carried out in violation of the statute can constitute a substantial breach of the lease or tenancy.

That is why a tenant who plans to leave an apartment temporarily should not simply assume that a person taking over the apartment can be treated as a roommate.

4. Primary Residence Is a Critical Issue

The tenant's continued occupancy of the apartment is particularly important under the Roommate Law.

RPL § 235-f generally conditions the statutory protection on the tenant or the tenant's spouse maintaining the premises as a primary residence.

This creates an important distinction between genuinely sharing an apartment and transferring possession to another person.

If a tenant continues living in the apartment while sharing it with a roommate, the arrangement may fall within § 235-f.

If the named tenant no longer shares possession and another person occupies all or substantially all of the apartment in the tenant's place, the arrangement may instead be treated as a sublet or another transfer of possession.

The outcome can depend on the facts, the lease, the building's size and type, applicable rent-regulation laws, and the tenant's actual use of the apartment.

A temporary absence does not automatically transform a roommate into a subtenant. Travel, work, school, family obligations, and other temporary circumstances can complicate the analysis.

The key point is that a roommate arrangement does not give a tenant unlimited freedom to turn the apartment into someone else's residence while the tenant lives elsewhere.

5. The Roommate Law Does Not Override Occupancy Codes

The Roommate Law provides important statutory protections, but those protections do not override lawful occupancy requirements.

RPL § 235-f specifically preserves a landlord's ability to enforce occupancy limitations necessary to comply with applicable federal, state, or local laws, regulations, ordinances, or codes.

That means the number of people living in an apartment can still matter where building or occupancy requirements are involved.

Tenants should therefore distinguish between a landlord simply objecting to a lawful roommate and a legitimate issue involving an applicable occupancy restriction.

6. Don't Assume That Paying Rent Automatically Creates a Sublet

Another common misconception is that a roommate becomes a subtenant simply because the roommate pays the primary tenant rent.

That is too simplistic.

New York City's Housing Court recognizes a roommate holdover process for situations in which a roommate rents from the primary tenant. The existence of rent payments therefore does not, by itself, determine whether the arrangement is a roommate relationship or a sublet.

The surrounding circumstances matter.

For rent-stabilized apartments, however, additional restrictions can apply to roommate arrangements and sublets. Tenants in regulated apartments should review the applicable rent-regulation rules before setting the amount of rent charged to a roommate or arranging a sublet.

7. What Happens If the Tenant Leaves?

There is an important provision in the Roommate Law that tenants sometimes overlook.

RPL § 235-f(6) provides that an occupant and the occupant's dependent child do not acquire a right to continued occupancy merely because they lived in the apartment with the tenant. If the tenant vacates, the occupant generally does not have a continuing right to remain under the Roommate Law unless the landlord has expressly agreed in writing.

That provision reinforces the distinction between a roommate and a tenant taking over an apartment.

It does not, however, authorize a landlord or primary tenant to engage in a self-help lockout.

If an occupant refuses to leave, the applicable notice and court procedures still have to be followed where required.

8. The Nightmare Scenario: When the Roommate Refuses to Leave

What happens when a roommate relationship or romantic partnership ends and the primary tenant wants the other person out?

The answer is not to simply change the locks.

New York City's Housing Court explains that a roommate cannot simply be locked out of the shared home without a court order.

Depending on the circumstances, the primary tenant may need to commence a roommate holdover proceeding or, in some circumstances, a licensee holdover proceeding.

When the person pays rent to the primary tenant, a roommate holdover may be the relevant Housing Court process. When someone occupies the apartment by permission without paying rent, a licensee-holdover theory may be considered.

But that is not a complete legal test. The appropriate proceeding, required notice, timing, and legal theory can depend on the facts and the person's legal status.

New York Courts provides a roommate holdover guide and information concerning termination notices.

The important lesson is simple: do not attempt to physically remove an established occupant or change the locks without first determining what legal process applies.

9. The Sublet Trap: Two Different Scenarios

Consider two hypothetical situations.

Scenario One: A Genuine Roommate

Sarah rents an apartment in Manhattan in her name. She continues living there and invites a friend to share the apartment. The friend contributes toward rent and household expenses.

Assuming the arrangement satisfies the applicable occupancy requirements, this is the type of shared occupancy that RPL § 235-f addresses.

Scenario Two: A Transfer of Possession

Sarah leaves the apartment and allows her friend to occupy all or substantially all of it while Sarah lives somewhere else.

That situation raises a different set of legal questions. It may be a sublet or another transfer of possession, depending on the circumstances.

If Sarah's apartment is covered by RPL § 226-b, she may need to follow the statutory subletting procedure before the arrangement begins.

She should not assume that calling the other person a "roommate" makes the arrangement a roommate situation under § 235-f.

10. What About Traveling or Staying Somewhere Else Temporarily?

New Yorkers sometimes leave their apartments temporarily for work, school, travel, medical care, family obligations, or other reasons.

A temporary absence does not automatically mean that an apartment has been unlawfully sublet.

The legal analysis can depend on the nature and duration of the absence, whether the tenant continues to maintain the apartment as a primary residence where required, whether another person has taken possession, and the terms of the lease and applicable law.

Tenants planning an extended absence should therefore determine whether their proposed arrangement is actually a roommate situation or a sublet.

For covered tenants, the subletting rules should be reviewed before another person takes possession of the apartment.

11. Rent-Stabilized Apartments Have Additional Rules

The analysis can become more complicated when an apartment is rent stabilized or otherwise subject to rent regulation.

Rent-regulated tenants can face additional rules concerning sublets, rent charges, primary residence, and occupancy.

RPL § 226-b itself provides that its subletting provisions interact with the applicable rent-regulation laws. Other regulations can also affect the rights and obligations of tenants in regulated apartments.

For that reason, tenants should not automatically apply ordinary market-rate roommate advice to a rent-stabilized apartment.

If a dispute involves a regulated apartment, it is prudent to check current guidance from the New York State Division of Housing and Community Renewal and, where appropriate, obtain legal advice concerning the specific circumstances.

12. Protect Yourself Before a Dispute Starts

The safest time to document a roommate arrangement is before there is a dispute.

A tenant should consider:

1. Provide the required information. Give the landlord the occupant's name within the applicable 30-day period.

2. Keep documentation. Save copies of written communications concerning the occupant.

3. Continue actually occupying the apartment. If you plan to leave, determine whether the arrangement has become a sublet or another transfer of possession.

4. Understand your lease and building type. The statutory sublet rules do not apply identically to every apartment.

5. Know whether the apartment is rent regulated. Additional rules may apply.

6. Don't assume rent payments determine legal status. A roommate can contribute rent without automatically becoming a subtenant.

7. Don't use self-help eviction tactics. Changing locks or removing an occupant's belongings can create a separate legal problem.

8. Take landlord notices seriously. A Notice to Cure or Notice of Termination can trigger important deadlines.

9. Get legal advice when the situation becomes complicated. An alleged unauthorized sublet, non-primary residence claim, or roommate dispute can involve several overlapping areas of New York housing law.

The Bottom Line: Roommate vs. Sublet

New York's Roommate Law can protect a lawful shared-living arrangement, but the protection is structured and fact-dependent.

For a lease signed by one tenant, RPL § 235-f generally permits the tenant's immediate family, one additional occupant, and that occupant's dependent children, provided the tenant or the tenant's spouse maintains the apartment as a primary residence. The tenant must also provide the landlord with the occupant's name within 30 days after occupancy begins or after a written request from the landlord.

Different occupancy rules apply when multiple tenants are named on the lease.

When the named tenant remains in the apartment and genuinely shares it with another person, the arrangement may fall within RPL § 235-f. When the named tenant gives another person possession of the apartment while living elsewhere, the arrangement may instead be a sublet or another transfer of possession.

For covered tenants in buildings with four or more residential units, RPL § 226-b establishes a statutory process for requesting consent to a sublet. That process includes specific notice and documentation requirements, and the tenant remains responsible under the original lease.

The Roommate Law also provides that an occupant generally does not acquire a continuing right to remain after the tenant vacates unless the landlord has expressly agreed in writing.

But neither a landlord nor a primary tenant should assume that these rules permit a self-help lockout. Where an occupant refuses to leave, the proper notice and court procedure may be required.

The key is to understand the difference between sharing an apartment and transferring possession of it before the arrangement creates a legal problem.

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