Most listings are in the $10's per square foot per year. The Arvada submarket is seeing a decrease in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 12% decline in rent.
Compared to the rest of the Denver Metro market, the Arvada region has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 13 listings have been posted online, which means listings most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 2,280 sqft. Most buildings in this market are approximately 2 stories. Most buildings in this market were built in 1985 and are Class B.