Most listings are in the $20's per square foot per year. The Historic Downtown Littleton region is going through a decline in rates. In the last 3 months, the median rate decreased $4 per sqft per year. That's a 13% decline in rent.
Compared to the rest of the Denver Metro market, the Historic Downtown Littleton submarket has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 2 listings have been made available, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. 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 500 sqft. Most properties in this area are close to 1 stories. Most buildings in this region were built in 1970 and are Class B.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Public administration is the dominant industry in this region. Most of the folk of Historic Downtown Littleton work from home. Commuting between 30 and 45 minutes a day is the norm for those who opt to reside in this part of town.