An Addendum To Lease Agreement is a formal document used to modify or supplement an existing lease agreement under Belgian law. It is essential when parties need to change specific terms of their original lease while keeping other provisions intact. The document must comply with the Belgian Civil Code and regional regulations (Brussels-Capital, Flanders, or Wallonia), particularly regarding residential leases which have been regionalized since 2018. Common modifications include rent adjustments, lease term extensions, changes to permitted use, or updates to party information. The addendum requires official registration with Belgian authorities and must be drafted in accordance with local language requirements depending on the region. It serves as a legally binding extension of the original lease, ensuring all modifications are properly documented and enforceable.
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1. Parties: Identification of the landlord and tenant as they appear in the original lease agreement
2. Background: Reference to the original lease agreement including its date, property address, and registration details as required under Belgian law
3. Definitions: Key terms used in the addendum, including reference to defined terms in the original lease agreement
4. Modifications: Clear and specific details of the changes being made to the original lease agreement
5. Effective Date: The date when the modifications will take effect
6. Confirmation of Other Terms: Statement confirming that all other terms of the original lease remain unchanged
7. Registration: Acknowledgment of the requirement to register the addendum with Belgian authorities
8. Governing Law: Confirmation that the addendum is governed by Belgian law and the applicable regional regulations
9. Signatures: Execution block for all parties to sign, including date and place of signing
1. Rent Modification: Specific section detailing changes to rent amount, payment terms, or indexation - include when rent-related changes are being made
2. Term Extension: Section specifically addressing changes to the lease duration - include when modifying the lease term
3. Property Modifications: Details of any agreed changes to the property or permitted use - include when there are physical property or usage changes
4. Security Deposit Adjustment: Changes to security deposit arrangements - include when modifying deposit terms
5. New Occupants: Details of additional or changed occupants - include when modifying authorized occupants
6. Utilities and Charges: Modifications to utility payment responsibilities or service charges - include when changing cost allocations
7. Insurance Requirements: Changes to insurance obligations - include when modifying insurance terms
1. Schedule 1 - Original Lease Agreement: Copy of the original lease agreement being modified
2. Schedule 2 - Modified Terms Comparison: Side-by-side comparison of original and modified terms for clarity
3. Schedule 3 - Property Modifications Plan: Plans or descriptions of any physical modifications to the property (if applicable)
4. Schedule 4 - Rent Calculation: Details of rent indexation or modification calculations if rent is being changed
5. Schedule 5 - Required Certificates: Any new certificates or permits required due to the modifications
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