Though there are a lot of online property portals in Pakistan, some of them are really good but they charge big amounts for postings. Also the hassles of payment to those portal is another issue, as most of the people does not have a credit card to do the payment. I was looking for something good and found the below website for property postings. It has quite good reach and website is managed well. You guys can check it out and see if it work for you.
Please post your comments related to the website for updates.