Most listings are in the $20's per square foot per year. The Allegheny County region is going through a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 2% decrease in rent.
In the last 90 days, 529 listings have been made available, so you'll want to check back regularly for new listings. About 3% of the listings in the Allegheny County are subleases, so you will probably need to consider the implications of signing a direct lease with the building. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
Even though the median size is 4,880 sqft, there are still 0 new availabilities below 2,000 sqft. Most buildings in this area are close to 3 stories. Most buildings in this region were built in 1982 and are Class B.