The typical asking rate per listing is in the $30's per square foot per year. The West Lake Hills region is going through a a boost in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 10% rise in rent.
Compared to the rest of the Greater Austin market, the West Lake Hills submarket has more expensive rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 2 listings have come on the market, which means new availabilities most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,320 sqft. Most buildings in this area are close to 2 stories. Most buildings in this region were built in 1985 and are Class B.