On average, listings lease in the $30's per square foot per year. The Mission Viejo region is experiencing a decrease in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 5% decrease in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Mission Viejo region has lower rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 33 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. About 9% of the available space in the Mission Viejo are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 1,290 sqft. Most properties in this region are around 2 stories. Most buildings in this region were built in 1985 and are Class A.