Most listings are in the $40's per square foot per year. The Douglas submarket is going through a a rise in rates. In the last 3 months, the median rate rose $41 per sqft per year.
In the last 90 days, 0 listings have come on the market, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About Inf% of the available space in the Douglas 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 140 sqft. Most buildings in this region are around 1 stories. Most buildings in this region were built in 1971 and are Class C.