Cost of construction (average)

I want to build 01 kanal house in awt phase 1 having limited budget. I look forward your expert advice please.

Cover area ground floor (2800 sqft)
First floor covered area (600 sqft)

Marble / tile flooring (average - not expensive)
Please guide me on following points:

What is average cost of plinth level (buniaad) of 2800 sqft (level plot and will kept covered area height 4-5 feet from land level)?
What labor rate currently prevail in market (without material) all activity?
What is per sq foot average rate for grey structure (normal construction)?
What is normal rate for finishing (normal)?