notice for code of civil procedure section 1179.04(c) – a landlord must use this notice if their tenant has failed to pay rent between march 1, 2020 and september 30, 2021, even if the landlord is not intending (at least at this time) to file an unlawful detainer action. if the landlord wants to file an unlawful detainer action to evict the tenant for non-payment of rent between september 1, 2020 and june 30, 2021 (i.e., the “transition time period”).