Most listings are in the $20's per square foot per year. The Brea region is seeing a decline in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 12% decline in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Brea submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 15 listings have been listed, which means new availabilities might be going fast. You'll want to be prepared to tour spaces as quick as possible. About 27% of the office spaces in the Brea 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.
Even though the median size is 3,840 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this area are around 2 stories. Most buildings in this region were built in 1985 and are Class B.