I personally dont think it will go down.
Why? Here are my honest opinions

1) In recent years has price of materials, goods and services gone down or up? Do you see this trend changing next few years?
2) Ringgit is weakening compared to alot of other currencies
3) Still very cheap compared to neighboring countries when we weigh in infrastructure that is available and land value
4) I remember reading the Gov wont take away DIBS but they will keep it in view and monitor it. I also believe without DIBS, the low and middle income will suffer more cause they have to consider more now that they have to start paying earlier.
5) Do you think no DIBS will stop flippers, rich tycoons and foreign investors?
6) A lot of business seems to be picking up in the Asia region causing a healthy growth in FDI. Meaning flow of monies injected into the economy which sonner or later causes inflation based on supply and demand.

Dont quote me... This are just my observations with other countries as well and how inflation works. Remember how much illicit funds flow out of the country... So thats another factor which plays heavily

Then it means ringgit weak, raw material buy from china increase means house price increase means buyer need absorb. Of coz rising the price lo ... developer wont be so crazy and absorb all the increaments.