A sublease agreement is a legal contract signed between a tenant and a third party allowing the latter to rent out the entire property or any part of it. Pennsylvania state laws don't have specific instructions on subleasing.Tenants should refer to their lease agreements for guidance. In general, Pennsylvania does allow subletting unless it is explicitly prohibited in your agreement. Subletting, also known as subleasing, involves renting out a property or a portion of it that you are currently leasing, to a new tenant. How Much Does a Sublease Cost? The average cost (i.e. Call (954) 764-7878 - Valdes Law Firm P.A. is dedicated to serving our clients with a range of legal services including Property Law and Real Estate cases. Lauderdale, FL 8,594 sq ft. Building - For Sublease.