In Virginia, a tenant must have explicit written consent from their landlord to sublet a rental property. 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.When a tenant asks its landlord to consent to a sublease the Landlord will rightly focus first on business concerns. Who is the subtenant? 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. Create your free Virginia sublease agreement to sublet your property. Rent your unit to a subtenant with our attorney-approved template. Sublet and sublease are two different words for the same concept.