The vast majority of the neighborhood in question is 4-8 story buildings. A lot of them being walkups.
The tax system allowed a developer to take a 30-year speculative bet that eventually they would build their skyscraper. Their plans almost completely fell through the year before construction started because they were planning an even bigger building than they built but couldn't lock up enough tenants. They settled on a 40-story, 1 million square foot tower that stands there today and dwarfs all of the buildings at its feet.