“Code of Civil Procedure §1161(2) prevents the landlord from claiming rent due more than a year before the service of the 3-day notice. See Fifth & Broadway Partnership v Kimny, Inc. (1980) 102 CA3d 195, 202. An argument could also be made on the ground of laches that it is inequitable for a landlord to wait a full year before demanding overdue rent. That argument was successfully made in Maxwell v Simons (Civ Ct 1973) 353 NYS2d 589, which held that it was unconscionable for a landlord to permit the tenant to fall more than 3 months behind in rent before bringing an unlawful detainer action based on the total arrearage. New York law required the tenant to pay the arrearage within 5 days or return possession. The court held that the landlord could base his eviction action only on the last 3 months' nonpayment of rent and would have to recover the balance in an ordinary action for rent. See also Marriott v Shaw (Civ Ct 1991) 574 NYS2d 477 and Dedvukaj v Mandonado (Civ Ct 1982) 453 NYS2d 965. In California, this reasoning, along with the cases cited above on "equitable" defenses, might be used to attack a 3-day notice to pay or quit demanding more than three months' back rent.” LawCaliforniaEviction2015TenancyLaches Book:California Eviction Defense Manual Source: California Eviction Defense Manual
“If it appears from the face of the [unlawful detainer] complaint that the plaintiff is an improper plaintiff, a demurer will lie. If it is not apparent from the face of the complaint, the issue must generally be raised as an affirmative defense in the answer. The fact that a plaintiff is not a proper plaintiff would appear on the face of the complaint, for example, when • The complaint states that the landlord has sold the property; or • The name of the plaintiff is not the same as the name of the landlord on the lease attached to the complaint, and the plaintiff does not allege that he or she is the successor in interest.” LawCaliforniaEviction2014Demurer Book:California Eviction Defense Manual Source: California Eviction Defense Manual