A Washington sublease agreement is a contract used when a tenant wants to rent part or all of their residence to another person. Washington Sublease Agreement ✓ easily fill out and sign forms in a minutes with PDFLiner ✓ download blank or editable online.Edit, sign, and share sublease form online. No need to install software, just go to DocHub, and sign up instantly and for free. A sublease agreement is a rental contract used for rerenting a currently leased unit to a new tenant. Here is a sample sublease agreement you can fill out or use as a template. Create your Washington sublease agreement and sublet your rental. Rent your unit to a subtenant with our attorney-approved template. A sublease agreement is a form that allows a tenant to rent space they have under a written contract with a landlord to someone else. Residential Lease Agreement: Outline the landlord's and tenant's rights and obligations when entering a residential tenancy.