In Buffalo,
the 38 storey, 529 foot tall
HSBC tower (née Marine Midland Bank tower) was purchased for $85 million.
Wikipedia
Then when HSBC and other tenants vacated it the value dropped tremendously. It was purchased by DC based developer Doug Jemal for $12 million, who has since put $100M plus into it. Apparently the building cost $50 million in 1969 dollars (finished in 1972) which is the equivalent of $425 million today.
The ~1.2M sq ft tower has been transformed into the mixed use
Seneca One tower (with ~115 apartments on the lower annex floors), and with M&T Bank spending $58M on their "tech hub" in the building. Highmark (formerly Blue Cross Blue Shield) of Western NY is moving into the building as well.
Wikipedia
Many people didn't like the terra cotta and gun metal paint job at first, but most have been won over. A visible symbol of Buffalo's resurgence.
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