On average, listings lease 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 $1 per sqft per year. That's a 3% rise in rent.
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 new availabilities most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 300% of the available space in the West Lake Hills are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,730 sqft. Most properties in this region are around 2 stories. Most buildings in this region were built in 1984 and are Class B.