A real estate leasing technique whereby
the landlord and tenant cooperate to sublet a portion of the property or unit, and split the rent revenue (and responsibilities) of the sublease. Unlike
traditional subletting, the tenant remains in the unit/property along with the subtenant. Unlike just getting a roommate, there is a hierarchy between the tenant and subtenant. The tenant assumes some (but not all) of the landlord's responsibilities, effectively becoming
more than just a tenant. He is an Augmented Tenant. Hence the term Augmented Tenancy.