Most listings are in the $20's per square foot per year. The Yorba Linda submarket is experiencing a a rise in rates. In the last 3 months, the median rate rose $29 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Yorba Linda region has smaller rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 0 listings have come on the market, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. About Inf% of the listings in the Yorba Linda 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 980 sqft. Most buildings in this market are around 2 stories. Most buildings in this market were built in 1986 and are Class B.