Quote:
Originally Posted by McBane
I did qualify my answer with typically. And even in mixed use towers, office is the primary driver of the height. We can call CITC mixed use b/c it does have a hotel but let's be real, it's primarily an office building. The tower in Austin that you cited is 700k of office! Whether it's part of a mixed use tower or a dedicated office building, 700k of office space is huge and probably not going to happen in Philly for the foreseeable future. For context, FMC is 600k square feet.
Hey, I'll happily eat my words. But I think the tallest towers going up in the near future will continue to be primarily residential and probably mostly under 700 ft.
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What world have you lived in where 10 years has been predictable, let alone 50..... hell, even 2 years is not predictable (COVID).
At any point in time Philadelphia could land a company large enough to fill 700K sq ft of office space. That's really not that much.... plus, most office buildings require 50% or greater leased to get off of the ground and get financing unless they're entirely built on spec. So that would require 350K sq ft of office space to be leased to get off of the ground... sounds reasonable to me.
If Philadelphia landed this for instance, that would more than likely fill 350K sq ft of office space or more:
https://www.bizjournals.com/philadel...1b-arpa-h.html
Plus, if you look at the hypothetical Supertall for Schuylkill Yards, it's literally stepped back or tiered along several spots in the tower to plan for multiple uses. Obviously, this is likely not the final design, but let's take a look at it:
1. The first portion of the building is on a very large podium. Let's call this 8 floors. This podium is easily large enough for lab/life science space. Let's say a 20 foot floor height for the first floor, and 15 feet for every other floor for a total of 125 feet for this portion.
2. The second two portions/set backs/tiers of the building could be office space. Let's call this 700,000 square feet across 22 floors. Let's say 20 feet tall for the first floor of the office portion and 14 feet tall for every other floor for a total of 314 feet tall.
3. The third portion/set back/tier of the building could be hotel space. Let's call this 15 floors. Let's say 20 feet for the first floor of this portion and then 12 feet for every floor after that for a total of 188 feet tall.
4. The final portion/tier of the building could be residential rental apartments. Let's call this 27 floors with a 20 foot tall first floor for this portion of the building, and 12 feet tall for every other floor for a total of 332 feet tall.
5. Lastly, the top of the building is adorned with decorative spires or a decorative crown. Let's call this 60 feet tall.
Total building height = 1,019 feet tall - 72 floors