Dc rates is islamabad

What are the dc rates in islamabad sector e-16. Does stamp duty calculated on dc rates or actual purchase price.?
is there any website link or office address where i can check it??

Dc rates in Islamabad varies from area to area. It is based on last years total transactions calculated with patwari. So patwari is the person of that moza who knows exact dc rate. No information is available on net.