In case you haven't considered when you are buying a property...
Earthquake http://www.ejse.org/Archives/Fulltex...al1/200805.pdf (effects on tall and fanciful ones like Reflections are yet to be seen)
Climate change http://app.mewr.gov.sg/data/ImgUpd/N...ter_2_-_VA.pdf (study was done in 2008 but apparently PUB was caught off-guard by the torrential rainfalls in 2009)