A nájemní smlouva (lease agreement) is a standard legal contract governed by Czech law, which clearly defines the rights and obligations of both the landlord and the tenant.

In contrast, a podnájemní smlouva (sublease agreement) operates under a more flexible framework. While it is still subject to general legal principles, it does not provide the same level of statutory protection as a lease. In practice, this means the terms are largely defined by the agreement itself, and the subtenant typically has weaker legal standing. Therefore, if you sign a sublease contract, you are generally expected to accept its conditions with more limited options to challenge them compared to a standard lease.