The typical asking rate per listing is in the $10's per square foot per year. The Las Cruces region is going through a decrease in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 13% decline in rent.
In the last 90 days, 27 listings have been listed, which means new listings most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 170% of the listings in the Las Cruces are subleases, so you might be able to snag a great spot on a short term. 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 2,000 sqft. Most properties in this market are approximately 1 stories. Most buildings in this area were built in 1958 and are Class B.