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? What does a background check include? My co-signer(s) are having issues with signing the lease. How can they sign the lease? How can I find out more about my rights as a tenant? Can I use your service to pay my landlord for utilities?