You cannot construct number of farm houses on agricultural land 

you need to convert agricultural land into residential use before constructing farm houses on land 

3) 

Tamil Nadu land use conversion charge at the rate of 3% of the market value fixed under the Indian Stamp Act, 1899 need to be paid to the local authority, and the concerned body will deposit the amount in Government head of account and grant permission for carrying out the development works.

4) 

obtaining completing Tamil Nadu land conversion, the applicant has to attach documents as mentioned below:

• Copy of sale deed, lease deed and power of attorney self-attested by the applicant
• Certificate of ownership should be obtained from the Executive Officer, Town Panchayat or Commissioner, Municipality Corporation in case of urban local bodies
• In the case of rural local authorities, certificate of ownership to be obtained from the Block Development Officer (BDO) of Block Panchayat, Village Panchayat
• FMB or Town Survey sketch
• Patta, Chitta or Town Survey Land Records (TSLR) in owner’s name
• Site plan inappropriate scale of 1:400/800/1600
• Proposed layout for sub-division plan (In case of layout/subdivision proposal)
• To plan to show all existing developments surrounding the site for 500-metre radius
• Encumbrance certificate for 13 years issued not before 30 days from the date of submitting the application

Make application to local authorities for conversion of commercial land into residential use 

it should not take long time 

after conversion application is allowed you can construct villa on land 

consult a local architect 

The agricultural land bought to be used for agricultural purposes only

The unapproved construction even in the name of farm house amidst agricultural land may attract the sore eyes of the authority and it may draw legal action on it.

you need to convert agricultural land into residential use before constructing farm houses on land 

Permission to construct many farm houses in a small piece of agricultural land may not be granted even if they are farm houses.

For change of use of agricultural land to residential, one needs to obtain permission  for conversion from agricultural to NA   from appropriate authorities such as the Directorate of Town and Country Planning  .and then construction can be carried on the plot for building house

1. There is no specific set of rules or format that has to be used for converting commercial property into residential, you may approached the authorities concerned with an application in writing  and submit the same. 

2. It depends on your approach and other issues involved in it.

3. You may apply for conversion and then submit an application for approval of construction of villa.

4. You will come to know about it after obtaining approval for construction of villa.

5. You may specify the same in your application for approval about it.