Most listings are in the $30's per square foot per year. The Monticello submarket is going through a an increase in rates. In the last 3 months, the median rate increased $34 per sqft per year.
In the last 90 days, 17 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 12% of the listings in the Monticello 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 420 sqft. Most properties in this region are approximately 1 stories. Most buildings in this area were built in 2005 and are Class B.