Quote:
Originally Posted by mhays
Going b-g can be costly (a huge variable) but reducing building height can save a lot too.
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Given the wet sloppy marsh muck that Chicago was built upon, deep excavations are quite expensive, messy, and time consuming, and are thus rarely done here.
Of course, there will be a multitude of variables for any given project that can change the equation, but the general "back of the envelope" calculation I've always heard here is that an underground parking space costs twice as much as a structured parking space.
That's obviously a very rough generality, and even if it's not always true, the generally-accepted perception of it being "true", does scare away some in the local market from even considering underground parking solutions.