The typical asking rate per listing is in the $30's per square foot per year. The Allen submarket is going through a a rise in rates. In the last 3 months, the median rate increased $40 per sqft per year.
Compared to the rest of the DFW Metroplex market, the Allen region has more expensive rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 19 listings have been made available, which means office spaces might be going fast. You'll want to be prepared to tour spaces as quick as possible. About 68% of the available space in the Allen 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 3,330 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this region are approximately 2 floors. Most buildings in this market were built in 2005 and are Class B.