I’ve had many a client come to me in the middle of a nasty divorce and/or bankruptcy, concerned over either getting out of their current residential lease (or the landlord evicting him/her from the property). In a week to week rent, the landlord or the tenant must give the other party 10 days written notice. If it is a month-to-month lease, a 45 day written notice must be given from the landlord to tenant. After said notice, the tenant may vacate the unit at any time and is only responsible for the payment of rent for the period of time the premises was occupied (with notice to the landlord of the day the tenant would be vacating). Only a 28 day written notice is required from tenant to landlord.
Keep in mind, in either a week to week or month-to-month lease … the landlord only has to wait five business days after the rent is due (if the terms of the lease are in writing … or otherwise the notice of delinquency must be in writing) before suing for eviction.