Hey you guys know how much to do concrete imprint for car porch area?

Hi sifus and subcons, can give me a rough idea how much this would cost:
single storey corner house around 20' x 65' built up (total land area around 40' x 80')
1) to extend further 10' out to become 30' x 65'
2) to add half storey to become 1 1/2 storey