Most listings are in the $20's per square foot per year. The Grapevine region is seeing a decline in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 10% decrease in rent.
Compared to the rest of the DFW Metroplex market, the Grapevine submarket has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 6 listings have been made available, which means spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 17% of the office spaces in the Grapevine 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.
The standard measurement for office space in this area is around 1,380 sqft. Most buildings in this area are around 1 stories. Most buildings in this region were built in 2004 and are Class B.