Dear Sri Sanjeevrk,
I am doing agriculture/horticulture in our Karnataka state, from year 2004_2005 on wards. You may have to take a permission from village panchat officer , mainly for the purpose of getting a power connection for your farm house in your land. Presently , even the Electrical authorities are not insisting for certificate from the panchayat authorities, as the lands are not coming under panchayat limits. Except that, no one will question you.
Even your land will not come under village panchayat limits and your land comes in Revenue lands category. Hence you have to take a certificate from your village secretary only. Very little amount may be paid to revenue department.
The farm house, if you are constructing with a bank loan, the bank officials may ask for this certificate. Any how please obtain a NOC, certificate from your village secretary for your farm house. There is no limit for size of the farm house. Let it be a residence of you, of yours staff, a store room or a pump house room etc.
With best wishes, g.p.rao, farmer