So I ran a proper proforma on the thing. I made it in a few hours so it's nowhere near perfect but its actually a proper financial analysis not just some random speculation not grounded by reality.
So the office building is valued at $173 million. This incorporates the following assumptions:
• GLA of 600,000 (actual)
• Net Rents of $19.50 (actual)
• Operational efficiency of 100%
• Going in cap rate of 6.75%
This leaves 82 million as the purchase price for the land
In order to find the developable area we are going to have to make a couple key assumptions and work backwards.
Key assumptions:
• $650/sf sales price (conservative)
• $250/sf hard costs [including parking]
• 75/25 LEV at a blended WACC of 5.5%
• 30 month interest capitalization term
• Building efficiency of 85%
With these assumptions we can solve for an unlevered ROI of 20-25%, which is a decent benchmark
Given these parameters the GFA of the project would be roughly 1,200,000
Assuming an 8,000sf floor plate that would allow for 3 towers of 50 stories (assuming no podium outside tower footprints) or 4 towers of 38 stories.
Of course there are MANY assumptions here and I can only take my best educated guess as to the most logical figures. If the sellable figure rises then the size of the building necessary to make our returns would drop dramatically. Just as an example if the project sold for $700/sf (quite reasonable) a 20-25% return could be had at 1 million sf, or roughly 3 x 40 storey buildings.
Pinnacle could also opt to build one signature tower and 2-3 smaller towers
This is by no means exactly what will be built, it is however a much more appropriate and measured barometer than what has been thrown about so far.