Dear Rishab,
You pointed out the correct provision that requires the very existence of property to claim 80C in respect of Housing Loan -
"the income from which is chargeable to tax under the head “Income from house property” (or which would, if it had not been used for the assessee’s own residence, have been chargeable to tax under that head), where such payments are made towards or by way of"
Issue - Is completion of construction necessary ?
Ans - Yes, since the condition is clear that either the property is let out otherwise it should be used for self residence.
Ur doubt - 80C has not specifically ruled out the payments made during construction.
Ans - I have a question - is it possible to fulfil the above condition when the property is under construction?
Now, how can u say that 80C has not explicitly acting against it? For me there is no doubt that benefit is not allowed during the period of construction.
Issue - Still many people are claiming it.........
"Grass on other side always looks greener"
True, but r u ready to take the risk of claiming a deduction against provisions? No one can answer this question except you - dont forget penalty for concealment - sec 271(1)(c) - 3 times the tax sought to be evaded in addition to tax and interest.
Should u go for claiming it?
U may not like it but my piece of advice will be No..Not at all.. Never
"Play safe"..............:)