Gastrointestinal endoscopy units, both freestanding and associated with ambulatory surgical centers, are on the increase, and the trend is likely to continue. The concept is relatively new, and there are insufficient guidelines and a general dearth of information for prospective planners and physicians. Debate continues in areas such as the selection of patients, appropriateness of procedures, and access to tertiary care. Leaders often scramble to address both critical and non-critical issues, often after the center has opened to the public. They often encounter issues which were not anticipated. In this review, we have provided comprehensive and concise information on the various aspects of starting and running an endoscopy unit. Some of the areas considered are referral and recruitment systems, determination of the need and site selection, layout and regulations, aspects related to drugs, equipment, medical emergencies, and emergency room transfers, discharge criteria, post-discharge follow-up, and finally, we have addressed issues related to avoiding and managing cancelations. It is assumed that a majority of the procedures are performed with predominantly propofol-induced deep sedation.