2 Case law on Capital gain exemption u/s 54
"Any" long term capital gain, arising to an individual or HUF, from the transfer of a long term capital asset, being buildings or land appurtenant thereto and being "a" residential house property, (income from which is chargeable under the head 'Income from house proerpty') shall be exempt to the extent such capital gain is invested in the purchase of another residential house property, within 1 year before or2 years after the date of transfer, and/or in the construction of "a" residential house property, within 3 years after the date of such transfer provided the house property, purchased or constructed, is not transferred within a period of 3 years form the date of its acquisition."