Where can I buy an individual house in Chennai at a reasonable price?

In chennai price of induvidual house starts from a crore but then if you need something around 50  lakhs which is half a crore  then you have to go half a way away from city maybe near tambaram and its surroundings like madipakkam medavakkam in south and in north near Ambattur,Avadi you can get an induvidual house at 50 lakhs