On average, listings lease in the $40's per square foot per year. The McKinney region is experiencing a a rise in rates. In the last 3 months, the median rate rose $44 per sqft per year.
Compared to the rest of the DFW Metroplex market, the McKinney region has more expensive rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 39 listings have been made available, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 100% of the available space in the McKinney are subleases, so you might be able to sign a shorter term by taking over a previous 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 390 sqft. Most properties in this area are approximately 2 floors. Most buildings in this market were built in 2005 and are Class A.