On average, listings lease in the $20's per square foot per year. The North Washington submarket is experiencing a a boost in rates. In the last 3 months, the median rate went up $21 per sqft per year.
Compared to the rest of the Denver Metro market, the North Washington submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 1 listings have been made available, which means office spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 400% of the available leases in the North Washington 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.
Even though the median size is 3,540 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this area are close to 3 floors. Most buildings in this region were built in 1955 and are Class B.