Ansal API sec 114

Hi everyone,

I am going to buy a Plot in Ansal API sec 114 Greater Mohali of 150 sq yard.
I have one question.As per Ansal when the company have given possession then u have to make a construction there with in 3 years.The plot i am purchasing Ansal have offered Possession in Jan 2010.
But the owner has taken the possession in Feb 2011.
So i think as per company's rule the time span of 3 years will be over in Jan 2013.If i take that plot do i have to construct there in 15 days(which is not possible)..?

What do Ansal will do if i kept the plot for more 6 months then start over the construction..?

But the dealer is saying u can easily take time to Nov,Dec of 2013 as they have given 6 months and so on.

Seniors please help me out with weather should i buy that or not.

Thanks.