It has been demonstrated that urethroplasty should be considered the gold standard treatment for urethral stricture disease as it yields higher long-term success rates than endoscopic treatment options such as direct vision internal urethrotomy (DVIU) or dilation. Many data about these procedures exist, although most of the publications about urethroplasty are retrospective and involve a tremendous risk of bias. To address these issues, this study is designed to prospectively gain evidence about this matter in all patient subgroups facing a potential treatment with urethroplasty: native men, native women, transmen, transwomen and children.