Do all tenants have to sign the lease? July 10, 2019 16:14 Updated Yes, all tenants have to sign the lease. Related articles What’s included in my rental lease? How can I find out more about my rights as a tenant? Do I have to pay to use leases online? What if I have additional questions about my lease? Who can I contact if I’m having trouble accessing my lease or have additional questions about the lease service?