1. Reason for Termination: Detailed explanation of termination grounds - required for ordinary termination under §573 BGB but may be brief for extraordinary termination

2. Security Deposit: Information about the handling and return of the security deposit - include if there are specific arrangements

3. Outstanding Payments: Details of any rent arrears or other outstanding payments - include if applicable

4. Legal Consequences: Additional information about legal consequences and tenant rights - particularly important for extraordinary termination

5. Alternative Solutions: Proposed alternatives or compromise solutions - include in cases where negotiation is preferred

6. Forwarding Address Request: Request for tenant's forwarding address - include if not already provided

1. Proof of Legitimate Interest: Documentation supporting the landlord's legitimate interest in termination (e.g., personal use, economic reasons)

2. Property Condition Documentation: Current photographs or condition reports if termination is related to property damage

3. Payment Records: Documentation of missed payments if termination is due to payment defaults

4. Previous Correspondence: Copies of relevant previous warnings or notices sent to the tenant

5. Power of Attorney: If the letter is being sent by a property manager or legal representative