Lease Addendum

Adding to the Original Contract

A lease addendum (addendum) is a legal document that is attached to and becomes part of the original rental agreement. Its purpose is to add new terms, conditions, or information that were not included in the main contract. For example, an addendum might be used to provide a detailed list of house rules (huisregels), to outline the specific terms for renting a parking space, or to provide a detailed inventory list (inventarislijst) for a furnished apartment. Like any modification to the lease, an addendum must be agreed upon and signed by both the tenant and the landlord to be legally valid.

Part of the Binding Agreement

Once signed, the addendum is not a separate, less important document; it is an integral part of the overall lease agreement. Its clauses carry the same legal weight as the clauses in the original contract. A tenant who breaches a rule outlined in a signed addendum is in breach of their rental contract. Therefore, it is essential to read any addenda just as carefully as the main lease before signing. Do not treat it as a simple appendix. It contains binding rules and obligations.

Limitations on Content

As with a lease amendment, an addendum is subject to the limitations of Dutch rental law. A landlord cannot use an addendum to introduce clauses that contradict a tenant's mandatory legal rights (dwingend recht). For example, an addendum that states the landlord can enter the property at any time without notice, or that the tenant is responsible for all maintenance, would be legally void and unenforceable, even if the tenant has signed it. The protective framework of the law always prevails over non-compliant contract clauses.