What is Internal Development Charges (IDC) and how is it charged?

[BlessU]

Hi
Greetings

Few questions about IDC
On the DTCP website http://tcpharyana.gov.in/ , one does come across a section Fees and Charges> and select "Other charges".
This sheet provides IDC rates for Hyper Potential, High Potential, Medium Potential and Low Potential rates applicable for Residential, Institutional, Industrial, Commercial and Group Housing charges applicable from 28th Jan 08

-Just wondering how is IDC charged to customers??

Now, what rates would be applicable for Faridabad apartments, villas and plots? Are the rates same in all three cases or are they different for township, group housing etc.

- What does the cost to consumer in IDC constitute in terms of Infrastructure development?

Cheers