Compared to the rest of the Metropolitan Los Angeles market, the Mission Viejo region has more expensive rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 14 listings have come on the market, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 2,620 sqft, there are still 0 spaces below 2,000 sqft. Most buildings in this area are around 2 floors. Most buildings in this region were built in 1988 and are Class A.