The typical asking rate per listing is in the $10's per square foot per year. The Richardson submarket is experiencing a decline in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 14% decline in rent.
Compared to the rest of the DFW Metroplex market, the Richardson region has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 99 listings have been made available, so you'll want to check back regularly for new listings. About 77% of the available space in the Richardson 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 2,350 sqft. Most buildings in this area are close to 2 stories. Most buildings in this region were built in 1985 and are Class B.