On average, listings lease in the $20's per square foot per year. The Westminster region is experiencing a a boost in rates. In the last 3 months, the median rate increased $8 per sqft per year. That's a 38% increase in rent.
Compared to the rest of the Denver Metro market, the Westminster region has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 33 listings have been made available, which means leases most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 55% of the listings in the Westminster are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 3,000 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this area are close to 2 floors. Most buildings in this market were built in 1998 and are Class B.