On average, listings lease in the $20's per square foot per year. The Irving region is seeing a decrease in rates. In the last 3 months, the median rate decreased $2 per sqft per year. That's a 7% decline in rent.
Compared to the rest of the DFW Metroplex market, the Irving submarket has more expensive rates, and you'll need to make a great offer to be in this hot submarket.
In the last 90 days, 352 listings have been listed, so you'll want to check back regularly for new listings. About 5% 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,040 sqft. Most properties in this market are around 2 floors. Most buildings in this area were built in 1985 and are Class B.