Integrated underground spatial maps have been under construction in South Korea since the 2015 demonstration project as part of ground subsidence preventive measures aimed at augmenting underground safety management. However, the Integrated Underground spatial map constructed for each region at the time remained unchanged until now because of the absence of a renewal system. A clear statement on the obligatory submission of construction completion reports for underground information subject to changes and updates is found in Article 42, paragraph 2 of the Special Act on Underground Safety Management. However, the collection of reports is impeded by difficult access to the submission system and a lack of submission standards. Therefore, the Ministry of Land, Infrastructure, and Transport required by law the direct submission of reports through an online submission system for construction completion reports who underground space developers. In this study, a standard database for construction completion report submission was designed to create an automatic renewal system based on the submitted reports. By presenting the framework for three-dimensional underground facility model processing and renewal automation, a method of rapidly building a three-dimensional underground facility model at minimum cost is presented.