Roommate Agreements vs Written Lease in New Brunswick

Leases & Agreements New Brunswick 4 min read · published March 29, 2026 Flag of New Brunswick
Roommates often use informal agreements, but in New Brunswick tenants should understand when a written lease is safer and what protections each option provides. This guide explains the practical differences between a roommate agreement and a written lease, who is legally responsible for rent and repairs, how shared expenses can be documented, and steps to take if problems arise. It also covers when to involve the Residential Tenancies Tribunal, which official forms to use, and how to keep evidence like photos and receipts. The tone is practical and supportive so renters can make informed choices, protect their rights, and avoid common disputes with co-tenants or landlords.

Written lease vs roommate agreement: what they mean

A written lease is a formal contract between a landlord and tenant that typically names who is responsible for rent and the unit rules. A roommate agreement is a private contract between co-tenants that sets expectations for shared costs, chores, and privacy. In New Brunswick, a written lease usually gives clearer rights to each tenant and makes it easier to enforce obligations through the Residential Tenancies Tribunal[1]. Without a written lease, tenants relying only on a roommate agreement may face harder enforcement if a landlord or co-tenant disputes responsibility.

Keep all rent receipts organized and stored safely.

Key elements to include in any co-tenant arrangement

Whether you use a roommate agreement or a written lease, document the essentials so responsibilities are clear:

  • Rent amount, due date, and how each roommate pays their share.
  • Utilities and shared bills: who pays what and when.
  • Repairs and maintenance: who reports issues to the landlord and expected timelines.
  • Notice procedures for guests, subletting, or ending the agreement.
  • Evidence and records: photos, receipts, and written communications kept for disputes.
  • Move-out process: cleaning, key return, and deposit handling.

A written lease usually names each tenant as a party to the lease or specifies which tenant is responsible to the landlord. If all roommates are on the lease, each may be jointly and severally liable for unpaid rent and damage. If only one roommate is on the lease, the landlord may only have a contractual claim against that tenant.

Make sure any changes to a written lease are in writing and signed by all parties.

When to use official forms and the tribunal

If you cannot resolve a dispute with a landlord or co-tenant, you may apply to the Residential Tenancies Tribunal for a decision[1]. New Brunswick tenancy matters are governed by provincial tenancy rules and related legislation; consult the province's official tenancy information for the exact statutory language and timelines[2]. Official forms (for example, application forms to the tribunal and notices to end tenancy) explain what evidence to attach and the filing process[3]. In practice, use the tribunal application when a landlord refuses to repair serious issues or when a co-tenant won’t pay their agreed share and informal efforts have failed.

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Practical steps tenants should take

Before signing anything or when disputes begin, take these practical steps to protect yourself and your roommate arrangement.

  • Get any agreement in writing and include names, dates, and signatures.
  • Keep a record of payments: bank transfers, receipts, and written confirmations.
  • Report repairs to the landlord in writing and keep copies of the request and responses.
  • Agree on how security deposits will be collected and returned, and document the condition of the unit when moving in.
Detailed documentation increases your chances of success in disputes.

If you're searching for a new place or comparing lease terms, you can also Find rental homes across Canada on Houseme to review listings and typical lease clauses before signing.

For more about tenant responsibilities after signing, see What Tenants Need to Know After Signing the Rental Agreement. For a concise overview of rights under provincial rules, review Tenant Rights and Landlord Rights in New Brunswick.

FAQ

Can roommates be removed by the landlord if they are not on a written lease?
If a roommate is not on the lease, the landlord generally deals with the named tenant. A landlord may seek eviction for a breach by the named tenant; the roommate’s status can be complicated and may depend on the facts and any written roommate agreement.
Does a roommate agreement protect me from rent owed by another roommate?
A private roommate agreement can create obligations between co-tenants, but enforcement may require civil action between roommates or an application to the tribunal if the lease includes all tenants. Keep records and consider mediation before filing formal claims.
When should I apply to the Residential Tenancies Tribunal?
Apply when informal attempts (requests, mediation) fail and the dispute concerns rent arrears, serious repairs, deposit disputes, or wrongful eviction. Use the tribunal forms to explain your remedy and attach evidence.

How-To

  1. Write the issue clearly and gather supporting documents: copies of any roommate agreement, lease, photos, and receipts.
  2. Try mediated resolution with roommates and the landlord, keeping notes of meetings and written offers.
  3. If mediation fails, complete and submit the appropriate tribunal application form with evidence and a clear statement of the remedy you seek.
  4. Attend any scheduled hearing, bring originals and copies of documents, and be prepared to explain a timeline of events.

Help and Support / Resources


  1. [1] Residential Tenancies information - Government of New Brunswick
  2. [2] New Brunswick tenancy legislation and guidance - Official source
  3. [3] Official Residential Tenancies forms - Government of New Brunswick

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Marie Dubois
Marie Dubois

Bilingual Housing Rights Advisor, Tenant Rights Canada

Marie covers tenant rights across Quebec and the Atlantic provinces in both English and French. With a background in Quebec civil law and residential tenancy, she is a trusted voice on the Tribunal administratif du logement process and francophone tenant rights.