Most listings are in the $10's per square foot per year. The Garden Grove region is going through a decline in rates. In the last 3 months, the median rate fell $11 per sqft per year. That's a 39% decrease in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Garden Grove region has less expensive rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 17 listings have been made available, which means spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 2,160 sqft. Most properties in this region are around 2 floors. Most buildings in this area were built in 1981 and are Class B.