How long are you responsible for someone else's property?

If the person left items behind after leaving a rental, they should be stored with notice to the tenant within ten days advising them of the movement and then give 30 days notice that it will be disposed of. If the lease describes the issue, then there is really no required time frame. Medical issues, arrests, or eviction may change the rules somewhat. Get legal advice before taking action.

FOr as long as you have it in your possession.