The details of whatever agreements you had with the tenant would matter. Generally though the time to file a complaint for unpaid rent starts the day after the rent is due but is unpaid. That means each month’s unpaid rent starts a period of limitations for that month. If you wait to pile up a bunch of months of unpaid rent, you risk that the earlier months may end up being too old and past the statute of limitations. Thus, it may be that rent due more than three years before you filed your complaint are too late now to successfully get a judgment for.

