Most listings are in the $30's per square foot per year. The La Plata County region is experiencing a decline in rates. In the last 3 months, the median rate fell $5 per sqft per year. That's a 13% decline in rent.
In the last 90 days, 5 listings have been listed, which means new listings are probably going fast. You'll want to be prepared to make an offer immediately. About 300% of the listings in the La Plata County 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 950 sqft. Most properties in this area are close to 1 stories. Most buildings in this market were built in 1996 and are Class B.