Dear Sonali25
It is a good PPT on an off-beat topic, and one that should be circulated among professionals.
The core suggestion - not to buy any flat/property for one year will bring down the prices, is very sound as it is a well known fact that the Realty Sector is the most un-regulated and exploitative.
There is a talk of having a Regulator and having real estate norms as in U.S.
However, one must also keep in mind the fact in terms of Economics and the Price Elasticity of Demand. The demand for housing has become inelastic like the other necessities of life such as food, electricity, transportation etc. At times, it may act as Veblen and Giffen goods - the more the prices, there is more demand as people perceive it as becoming scarce. This is the reason Real Estate agencies try to 'persuade' buyers by saying - "One should buy it because it (land) is no longer being made."
Under such circumstances, it is unlikely that rational thought will prevail among buyers.
Warm regards.