How will it affect market sentiment and prices? What should investors do? Buy before the implementation? Wait and see?

Just read this article - http://loanstreet.com.my/learning-centre/How-GST-Will-Impact-Home-Prices-&-The-Property-Market

This seems like a good write-up. Check this out : http://www.thesundaily.my/news/1283893

I think this is the clearest explanation so far about how GST in property sector - http://www.propsocial.my/topic/61/gst-implementation-posted-by-jordan-chen