A duplicated collecting system is a common congenital anomaly of the urinary tract. However, late symptomatic presentation in adulthood is uncommon. We report the first case of left heminephrectomy, ureterectomy and radical prostatectomy using the da Vinci SP (single port) surgical system in a 64-year-old patient with localized prostate cancer and duplicated system with ectopic ureteral insertion into the prostatic urethra. The procedure was completed without technical difficulties or intraoperative adverse events. We demonstrate that the da Vinci SP robot allows for efficient performance of concomitant surgeries on the kidney and prostate without the limitations reported with single site surgeries.