The typical asking rate per listing is in the $20's per square foot per year. The Irving submarket is seeing a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 3% decrease in rent.
Compared to the rest of the DFW Metroplex market, the Irving 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, 356 listings have come on the market, so you'll want to check back regularly for new listings. About 3% of the listings in the Irving are subleases, so you will probably have to consider a longer term 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 650 sqft. Most buildings in this market are close to 2 floors. Most buildings in this area were built in 1985 and are Class B.