Below is a link to a Detroit Free Press article that gives answers to the most frequently asked questions (FAQ) they get about the Packard Plant.
http://www.freep.com/article/20121216/NEWS01/312160154/Banksy-piece-s-fate-answers-other-Packard-Plant-questions One question is, "..What is the cost of demolition?"
And their response is:
"But $20 million for demolition and cleanup at the site sounds like a lot of money. Is that reasonable?
That's the city's estimate. A demolition expert told the Free Press that
tearing down the plant could cost $10 million,
with environmental clean-up adding as much as $10 million more. The 1998 implosion of the J.L. Hudson department store on Woodward cost $12.8 million.
Yes, the buildings are different, but that figure shows that relative cost of demolishing such a large structure. Hudson's had 25 stories and 2.2 million square feet, and was close to the People Mover, which was damaged when the store was imploded. The Packard is in a sparsely populated area, nearly half a mile long, and had, at one time, 3.5 million square feet. Its tallest building is seven stories."
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