Tamilnadu-agriculture to commercial land conversion

Hello Sirs,

In Tamilnadu state,

1. Need to know about the procedures of converting an Agricultural land (rainfed area) to Commercial land.

2. What would be the cost to convert per acre of land?

3. How long will it take to complete the conversion?

4. What would be the approximate yearly property / land tax payable per acre to local municipality after conversion?

Thanks.