[gaetanomarano]

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a possible way to evaluate the costs to build a skyscraper in my city is to start from the current (average) price-per-sq.meter of common (under 9 stories) buildings that is around $2000

a (simple design) 50 stories' skyscraper may be around 220 meters tall and with a 35 x 35 meters base, so, each floor (excluding elevators, stairs, etc.) may be around 1000 sq.m with a price-per-floor around $2M ...then, the price of the entire building (at my city's prices) may be in the range of $100M (about 75 million euro)

but all skyscrapers have some (shared) extra-costs a small (9 stories) building doesn't have ...so, I must multiply the final (total) price for an (unknown) "coefficient" ...1.2? ...1.5?

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