The typical asking rate per listing is in the $40'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 increased $41 per sqft per year.
Compared to the rest of the Greater Austin market, the West Lake Hills region has more expensive rates, and you'll need to pay a premium to be in this hot region.
In the last 90 days, 3 listings have been posted online, which means leases most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 267% of the listings in the West Lake Hills are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,250 sqft. Most buildings in this region are around 2 stories. Most buildings in this market were built in 1984 and are Class B.