Construction cost can be calculated for capital gain tax or not

This discussion explores whether the costs associated with constructing a house, including additions like a modular kitchen and rainwater harvesting, can be deducted when calculating capital gains tax. The consensus is that if the sale includes both the plot and the construction, these expenses are generally deductible. However, the lack of original bills for a property built 20 years ago presents a challenge, and options for proving these costs need to be considered.