Most listings are in the $20's per square foot per year. The Odessa region is going through a a boost in rates. In the last 3 months, the median rate rose $23 per sqft per year.
In the last 90 days, 4 listings have been listed, which means new availabilities are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 75% of the available leases in the Odessa 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,500 sqft. Most buildings in this region are approximately 1 stories. Most buildings in this area were built in 2007 and are Class B.