Hi Shiva,
In the case mentioned above to decide whetheh it is under capital gain or PGBP we shold know two things
1. Whether the said property is converted into business stock nd then sold; or
2. It is sold in the personal right of ur clint
On analysing the fact
1.if it is converted as stock for the real estate biz, then both the head is applicable,
When he coonverted he shold have calculated capital gain and when he sold he shold have calculated profit under the head pgbp both will be taxed in the year in which such asset is sold. Here for the purpose of cost of aqui his ancestor coat will be taken.
If he has sold the asset in personal right then capital gain only applicable. Coast of aqui is same as above