Washington Sublease Agreement. A Washington sublease agreement is a contract used when a tenant wants to rent part or all of their residence to another person.Create your Washington sublease agreement and sublet your rental. Rent your unit to a subtenant with our attorney-approved template. An occupant is a friend or family member allowed to reside on the property. 2. PROPERTY. Agreement must be paid on the _____ day of every ☐ Week ☐ Month (check one). The Washington sublease agreement is most often performed when an individual must vacate a property they are contractually obligated to rent. Edit, sign, and share Application for Sublease - Washington online. No need to install software, just go to DocHub, and sign up instantly and for free. Check out our FREE residential sublease agreement contract for subletting in Washington.