Two co-tenants, one moves out: lease amendment, liability and termination

If two co-tenants signed a lease and only one later wants to remain, the other tenant’s departure will generally not end or amend the lease by itself. The remaining tenant does not automatically become the sole contractual tenant. The lease, its amendments and an express arrangement with the landlord are decisive.

Until an effective amendment, rent, operating costs, the deposit, damage and handover must be assessed under the existing contract. A private agreement between the tenants may allocate costs between them, but it does not automatically release the departing tenant from obligations owed to the landlord.

Check the MRG scope and the lease first

The application of the Austrian Tenancy Act, whether full, partial or excluded, cannot be inferred from the word apartment building. The property type, condominium structure, contract date, fixed term and statutory exceptions must be checked in the file. Within the full or partial MRG scope, rules on fixed terms and termination are relevant. Outside the MRG, the ABGB is the central framework.

In every case, the lease is the first point of reference for a co-tenant’s departure. It may contain rules on termination, a replacement tenant, transfer or consent. The articles on fixed-term leases and tenant turnover address separate review questions.

Moving out alone does not end the contractual position

A co-tenant may leave the apartment in practice and still remain a party to the lease. The departure alone does not show whether the landlord will continue the lease with the remaining tenant or release the departing tenant from obligations. Returning keys or changing registration does not replace a clear contractual arrangement.

A private agreement may state who uses the apartment or pays running costs from a particular date. Toward the landlord, it generally operates only within the existing relationship between the parties. The file should therefore distinguish an internal cost allocation, a use arrangement and an actual release from the lease.

Document the lease amendment with all parties

If the remaining tenant is to continue alone, the landlord should agree to a traceable lease amendment. It should identify the parties, the apartment, the effective date, the continuation of the lease, the departing tenant’s release and future liability. A letter from the departing tenant to the property manager will generally not be enough by itself.

The remaining tenant should also avoid assuming that the new position is settled without consent. A written amendment reduces later disputes about rent, deposit, operating costs or earlier damage. The original lease and every prior amendment should remain in the file.

Separate liability until the effective release

Until an agreed and effective amendment date, the existing contractual position remains relevant. Whether both co-tenants are liable jointly, in shares or under a special clause depends on the lease and statutory rules. Solidary liability should not be assumed without reviewing the contract. Section 891 ABGB may be relevant to a solidary obligation, but it does not replace an assessment of the actual agreement.

For the practical accounting, rent, operating costs, deposit, repairs and alleged damage belong in a cut-off schedule. An indemnity between the tenants may regulate their internal position. It binds the landlord only if the landlord accepts the relevant amendment or another effective legal basis applies.

Do not confuse termination with moving out

If the landlord does not agree to an amendment, the separate question is whether and how the joint lease can be terminated. The right, form, termination date and consequences depend on the applicable law and the lease. A fixed-term lease creates additional limits. With several co-tenants, a notice from one person must not be treated as a certain termination of the whole lease without review.

Within the MRG scope, section 29 on fixed terms and section 30 on landlord termination grounds are among the relevant provisions. Under the ABGB, sections 1116 and 1117 are particularly relevant. The landlord should read the wording, authority and structure of a notice together instead of relying on its heading alone.

Keep documents, payments and handover distinct

The review file should contain the original lease, amendments, correspondence with the landlord, private agreements, payment records, operating-cost statements, deposit documents and a damage schedule. The departure date, keys, remaining items and continued use of the apartment should also be recorded.

A handover does not automatically amend a lease. If the departing tenant removes belongings or returns keys, the record should state whether this concerns actual use only or follows an agreed release. The article on handover records and open claims supports the practical file, while the present article focuses on co-tenant departure.

Next steps when a co-tenant leaves

First establish the lease, its amendments and the MRG scope. Then record in writing whether the remaining tenant is to continue alone and whether the landlord releases the departing tenant at a defined date. Until that point, keep payments, deposit, damage and use separately documented.

If no amendment is reached, the termination and other ways of ending the lease require a separate review. A binding statement should be made only after the contract, form and consequences are clear. For owners and property managers, the unit file should distinguish the former lease position from the amended position.

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