Your college roommate moves in with you while job hunting. What type of leasehold estate is this most likely to be?

The scenario describes a situation where your college roommate moves in with you on a temporary basis while seeking employment. This arrangement most closely aligns with an estate at will. An estate at will is characterized by a direct agreement between the landlord and tenant, allowing the tenant to occupy the property for an indefinite duration while maintaining the landlord's consent.

This type of leasehold estate does not have a fixed term or a formal lease agreement and can usually be terminated by either party at any time, often with a notice period. It reflects a flexible living situation, which is typical when someone moves in informally to assist a friend or family member during a transitional period, such as job hunting.

The other types of estate mentioned do not fit the context as well. An estate at sufferance occurs when a tenant remains in a property after the lease has expired, without the landlord's consent. An estate for years involves a lease with a specific beginning and end date, meaning it is not applicable in a casual, undefined living arrangement. A periodic estate is one that requires payment at regular intervals, typically with a fixed time frame, which again does not match the described situation, where the arrangement is informal and not bound by a regular schedule.