A North Carolina sublease agreement is a legal contract that allows a tenant to act as a sublessor and rent their leased property to another tenant. A valid sublease in North Carolina requires written approval from the landlord and a detailed sublease agreement.A sublet, or sublease agreement, adds someone new to an existing lease. Usually the new person (subletter) replaces someone who is moving out. A sublease agreement is considered a written document that offers the lessee a chance to pass on the responsibility and rights of tenancy to another person. Legal evictions are not the same as "notices to vacate" from landlords. A sublease agreement is a legal document that allows a tenant to sublet a property to someone else (subtenant). Also known as subletting. A commercial sublease agreement is a statutory document authorizing a third party to occupy a leased property under the original lease agreement.