On average, listings lease in the $10's per square foot per year. The Longmont submarket is seeing a decline in rates. In the last 3 months, the median rate decreased $5 per sqft per year. That's a 20% decline in rent.
In the last 90 days, 17 listings have been posted online, which means listings are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 6% of the office spaces in the Longmont are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 1,900 sqft. Most buildings in this market are around 2 floors. Most buildings in this region were built in 1987 and are Class A.