On average, listings lease in the $20's per square foot per year. The Arlington submarket is seeing a decline in rates. In the last 3 months, the median rate decreased $5 per sqft per year. That's a 18% decline in rent.
Compared to the rest of the DFW Metroplex market, the Arlington region has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 78 listings have been made available, so you'll want to check back regularly for new listings. About 4% of the available leases in the Arlington are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,160 sqft. Most properties in this market are approximately 2 stories. Most buildings in this market were built in 1985 and are Class B.