Legal Definition of Sublease: The privilege of a person who has leased a premise to lease it to another person. In leases, the privilege to sublease must be stated specifically or the lessee will not be permitted to sublease | Learn About Subleases in Commercial Lease Agreements | Understand the definition and implications of sublease provisions in commercial lease agreements. Maximize space utilization, maintain flexibility, and mitigate financial risks. Stay compliant with your lease terms. Get informed and protect your rights as a business owner