A written lease can be modified by all EXCEPT which of the following methods?

A written lease typically requires specific methods for modification to ensure that the changes are legally enforceable. One valid approach to modifying a lease is through a written amendment, where both parties agree to the changes in writing, providing clear documentation of the new terms. Mutual consent is also essential, as any modification must involve both parties agreeing to the changes, further emphasizing the need for a documented agreement.

Formal renegotiation represents a structured approach, usually involving updated terms and possibly a new contract that outlines the new agreements, which is also acceptable.

However, an oral agreement does not meet the standard for modifying a written lease because many jurisdictions, including California, require lease modifications to be documented in writing. Without written evidence, disputes could arise over what was agreed upon, leading to complications in enforcement. Consequently, these forms of modification—written amendment, mutual consent, and formal renegotiation—ensure that changes are recognized legally, while an oral agreement lacks that security and clarity.