Hi,
Yes, you can claim the interest on both the properties jointly. But, interest on under construction property is not allowed as rebate till the time you get possession .
In case of underconstruction property, you can get the tax rebate for the interest paid on home loanonce you receive the possession of the new house.
The deduction for the first 5 years for underconstruction? property will be as follows after receipt of possession:
1. 1/5 of the total interest paid during pre-construction period; plus
2. Interest paid in the year in which you get the possession.
The above interest is subject to the maximum limit applicable.
Please feel free to call/ revert in case you need more clarity.
Thanks and regards
Abhishek Dugar
CA CS B.Com