Farmhouse In Karnataka

Hi all,
I have a small agricultural/farm plot of about quarter (1/4) acre in Ramanagra district in Karnataka. I have planted a few pomegranates in this plot. My question is with regards to the legality of building a farmhouse on such a plot of land. What is the approximate area I can use to build a farmhouse? There are conflicting opinions that up to 20 percent of the sital(coverage) area is allowed for farmhouse construction. However, there is no real clarity according to the Karnataka Land and Revenue Act. According to some online sources, 20 percent of total area is available (with G+1) only for educational or health building, and 5 percent (with G+1) for “any other” building.

What is real sital area available to construct a farmhouse in Karnataka?