The Frost Bank Tower sold for $188 million in August/September of 2006. That comes out to $354 a square foot which was a state record for office space. The tower cost $142 million to build.
Daily Texan article on the sale:
http://media.www.dailytexanonline.co...-2143384.shtml
Also with the construction of the Frost Bank Tower, it sort of set a new standard of quality in downtown. Suddenly we had this beautiful, classy, state-of-the-art skyscraper, and building owners of older buildings were having to play catch up. We've seen a surge in old buildings being totally renovated to be more useful to their tenants. The 32 year old Bank of America Center in downtown is one example. They renovated it adding state of the art equipment and updating its interior and even adding retail on the ground floor for the first time in the building. Several other towers have either gone through renovations or are about to. It has raised the design bar for new construction for not only office space but also other uses such as hotels and residential. As a result there also, we've seen older residential buildings being renovated. There's also been a few old office buildings going residential. It's been interesting to watch all this.
EDIT - With regards to the office occupancy rate of Downtown Austin at the time of construction of the Frost Bank Tower, take a look at the link below. In an article dated January, 2001, it says the occupancy rate was 96.7 percent. My memory is mush, so I don't recall the exact number, but if this article which was put out at that time says it was that high, then I guess it was.
http://recenter.tamu.edu/tgrande/vol8-1/1438.html
Here's an Austin Business Journal article that puts the office occupancy rate at 84.7 percent for Downtown Austin.
http://www.bizjournals.com/austin/ot...5200%5E1460394