On average, listings lease in the $20's per square foot per year. The Pomona submarket is going through a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 3% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Pomona region has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 16 listings have been listed, which means new listings might be going fast. You'll want to be prepared to make an offer immediately. About 113% of the available space in the Pomona are subleases, so you might be able to snag a great spot on a short term. 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 640 sqft. Most properties in this area are around 2 floors. Most buildings in this region were built in 1981 and are Class B.