A project for the modernization, reconstruction and extension of the pavilion of the former Ujazdowskih Hospital, built in 1894-96. The pavilion building survived World War II and underwent numerous renovations and adaptations in 1945-2000 . Since 2001 it has been out of use. As an integral part of the project, we made a full inventory of the building in the form of a point cloud (3D scan), obtained a conservation permit, made a construction and technical design. Obtaining the building permit is planned for Q4/2024 - Q1/2025 and the execution of the works for 02/03 Q 2025.