Disputes between and landlords and tenants often arise regarding assignment of a lease or subletting of the premises. The difference between an assignment of the lease and subletting of the premises is that with an assignment, the entire leasehold is transferred (i.e. the entire premises for the entire remaining term of the lease), whereas with a sublet, less than the entire leasehold is transferred. In most lease disputes relating to assignment or subletting, the tenant has assigned the lease or sublet the premises with out the landlord’s prior written consent as required by a written lease or rental agreement. Under California law, when this situation arises, the landlord is generally entitled to terminate the tenancy upon three days prior written notice.