Yes, you will have to come down and first figure out what you want in terms of the floor plans and the quality of materials like tiles vs marble etc... These choices can be the difference between the cost of construction being 1500 to 2500 per sqft. Now in a 60 sqyd plot, typically you only have 2 rooms per floor plus bathroom. So it should be a pretty straight forward thing. Let me know if you need more clarification on anything. I will be happy to help.
Disclaimer: This is my understanding, plz do your own research and find out for yourself.