I am assuming that settlement is after divorce.
Transaction 1: getting Alimony as assets:Any asset transferredwithout consideration to spouse is tax-free in the hands of the recipient. (When marriage exists)
However, after divorce, any asset transferred to the ex-spouse without consideration, would be a gift from a non-relative and would have tax implications for the recipient spouse.
Transaction 2: selling of the 2 plots:
a) Any income from the assets gifted prior to divorce could be clubbed with the transferring spouse till the marriage exists. After divorce, any subsequent income from these assets would be taxable in the hands of the recipient spouse. The cost of acquisition is deemed to be the cost at which the previous owner (ex spouse) bought it.
b) In case full amount of net consideration (not only the gain) is invested in purchase / construction of residential house, then, the full amount of long term capital gain would be exempted under section 54F.
otherwise proportionate amount of exemption can be calculated on the basis of following formula –
Exemption under section 54F = Long term capital gain x Amount re-invested / Net consideration
d) In my view 54F can be claimed for constructing the same house with the net consideration of both plots. New Delhi v Mohinder Kumar Jain IT APPEAL NO. 5254 (DELHI) OF 2014
e)Though the Supreme Court of India, in Bajaj Tempo Ltd., [TS-3-SC-1992-O] held that‘The Statute should be construed liberally for the purpose of deductions, the recent Delhi ITAT decision in the case of Kaushal Kishore Maheshwari vs ACIT[TS-6590-ITAT-2017(DELHI)-O] attempts to establish a direct nexus between the net consideration received and the reinvestment made. So its better to invest in assessee's name using the sale proceeds