I think theres need for case law
Construction cannot precede sale of old house - To claim exemption under section 54, the construction of the new house should be within two years after the transfer of the existing house. The exemption is not available where the new construction is made before the transfer or sale of the existing house - Smt. Shantaben P. Gandhi v. CIT [1981] 129 ITR 218 (Guj.).
Contra
( I Read this recently)
Exemption on capital gains could not be refused to the assessee simply on the ground that the construction of the new house had begun before the sale of the old house - CIT v. H.K. Kapoor [1998] 150 CTR (All.) 128.
@ Lalit Wadwha
1-HOUSE COMPLETED BEFORE ONE YEAR OR AFTER 3 YEARS FROM DATE OF TRANSFER..."
I did not found that one year before part (for construction) in the Act can you kindly cite?
In my knowledge its one year before or two years after the date of transfer for the purpose of PURCHASE
Furtherm the INVESTMENT is to be made in specified time limit and COMPLETION of construction does not matter for this following case laws may be reffered
B.B. Sarkar v. CIT [1981] 132 ITR 150 (Cal.)
Satish Chandra Gupta v. Assessing Officer [1995] 54 ITD 508
Commissioner of Income-tax v. R.L. Sood
more detail in this post
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