The typical asking rate per listing is in the $10's per square foot per year. The Las Cruces submarket is going through a a boost in rates. In the last 3 months, the median rate went up $18 per sqft per year.
In the last 90 days, 27 listings have come on the market, which means listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 144% of the available space 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 on the market, 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 buildings in this area are approximately 1 stories. Most buildings in this market were built in 1950 and are Class B.