On average, listings lease in the $10's per square foot per year. The Alpine submarket is seeing a a rise in rates. In the last 3 months, the median rate rose $16 per sqft per year.
In the last 90 days, 0 listings have been listed, which means spaces are probably going fast. You'll want to be prepared to make an offer immediately. About NaN% of the listings in the Alpine are subleases, so you will probably have to consider a longer term lease. 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 1,200 sqft. Most buildings in this area were built in 2007 and are Class B.