I am allotted a quarter in Nov. 2016 at Chandigarh and thus not drawing any HRA henceforth.

I also have a flat in Mohali (Tricity) purchsed through Housing Loan , jointly in name of me and spouse.

The flat has been vacant all through till Dec. 2016 and shall be on rent w.e.f. 01 Jan 2017.

Will the flat (which shall be now onwards on rent) my second home?
Do i have to show notional rental income from flat fro, April to DEc. 2016 and actual rental income wef Jan to March 2017.?

Or Is there any other way