Capital gain calculation on sale of floor of property.

Bhupesh Gangwani (14 Points)

14 September 2017  
Suppose a land was purchased in the year 2001 for rupees 2 lacs. Ground floor was constructed in the year 2002 for rupees 3 lacs. First floor was constructed in the year 2015 for rupees 4 lacs. Second floor was constructed in the year 2016 for rupees 5 lacs. Only second floor is sold in the year April 2017 for rupees 13 lacs. How would you calculate capital gain.

This is a complex situation faced by a client. I have searched a lot but no Case law found to guide me in this context.