On average, listings lease in the $40's per square foot per year. The Monterey Park region is seeing a a rise in rates. In the last 3 months, the median rate increased $43 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Monterey Park region has greater rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 7 listings have been listed, which means spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. 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 2,370 sqft. Most buildings in this market are around 3 stories. Most buildings in this area were built in 1982 and are Class A.