Understanding how to fight non renewal of lease is essential when a landlord refuses to extend your tenancy unfairly. Tenants should first review the notice, check if proper legal notice was given, and determine whether the reason is valid. If the non-renewal appears retaliatory or discriminatory, it can be challenged. Document all communication, gather evidence, and consider filing a complaint or seeking legal help. In some cases, tenants may negotiate or take action in housing court to protect their rights.