19 February 2013
According to the section 24(b) interest on housing loan allowable from the year of possession of house and interest upto the immediate previous ending financial year is allowable as pre-construction interest as 5 equal installments from the year of possession. So HRA and interest on housing loan doesn't consider at the same time and for the same period.
In case if the possession taken place in the middle of the year then upto the possession of house HRA shall consider and from possession interest shall consider.
19 February 2013
So for your case both HRA and interest on housing loan doesn't allow because of possession of house not taken place so only HRA allowable.