What is the duration for which a lease agreement is enforceable if only one party signs it?

In property management and lease agreements, the enforceability of a lease is significantly influenced by the presence of mutual consent and consideration from both parties. When only one party has signed a lease agreement, the enforceability generally hinges on whether the agreement can be deemed valid and binding under the law.

A lease agreement traditionally requires an offer, acceptance, and consideration. If only one party signs, typically, this means that the agreement is enforceable against that party, assuming they are the one entering the lease terms in good faith and intending to fulfill their obligations. In many jurisdictions, as long as the signed lease is a legitimate document, it can be upheld for a set term specified within the lease itself, commonly set at 12 months in many residential agreements. This is why 12 months is frequently the expected duration for lease agreements unless noted otherwise.

The other durations presented do not reflect the standard practices in leasing. Six months might be too short depending on the leasing market, while 24 months could be deemed an extended period without explicit agreement from both parties. Indefinite duration is more aligned with some types of tenancies (like month-to-month), but not typically with a lease requiring a formal agreement if only signed by one side.