Compared to the rest of the Denver Metro market, the Westminster region has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 33 listings have been posted online, which means leases most likley are going fast. You'll want to be prepared to make an offer immediately. About 3% of the listings in the Westminster are subleases, so you will probably have to consider a longer term 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 1,400 sqft. Most properties in this region are around 2 stories. Most buildings in this market were built in 1998 and are Class B.