Shanghai immovable heritage list 上海市不可移动文物名录 (2017)
Here is this list, and although it contains some buildings that had been demolished even before the publication (sometimes 7 years prior), there is utility even in these seemingly non-compulsory preservation lists:
http://wgj.sh.gov.cn/node2/n2029/n2031/n2062/u1ai153186.html
http://wgj.sh.gov.cn/node2/n2029/n2031/n2062/u1ai153186.html