80GG vs 24(b)

If assessee is owner of property, he can claim sec. 24(b) deduction, be it rented or self owned.

But the same assessee cannot claim sec. 80GG deduction.

Sir the property is under construction and it is not located in his place of duty and untill it’s whole completion made rental payments can be claimed 80GG?

Yes, he can claim deduction u/s. 80GG.

For under construction property, the interest cannot be claimed till its completion, but it is accumulated. The accumulated amount can be claimed in 5 equal installments, after getting possession of the flat.