Many people have asked in the comments about Tan Swee Hoe’s mansion. If you want to know more, the ‘Rojak Librarian’ has some interesting write up and photos that might also interest you.
Tan Swee Hoe’s grave is at Bukit Brown, Singapore. It’s a site that has been earmarked for redevelopment and the tombs are being exhumed. Have a nice quick read for more information at: http://mymindisrojak.blogspot.sg/2014/02/tan-swee-hoe-batu-pahat.html