Personal. Official website of Chongqing Vocational College of Building Technology shows that the school is a private school. Chongqing Vocational College of Building Technology is a higher vocational college located in Chongqing. It is a full-time general college established by the Ministry of Education with the approval of Chongqing Municipal People's Government. It is formed by the merger of Chongqing University City Institute of Science and Technology and Chongqing Real Estate Vocational College.