Most listings are in the $20's per square foot per year. The Yorba Linda submarket is going through a a boost 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 less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 0 listings have been made available, which means new availabilities might be leasing quickly. You'll want to be prepared to make an offer immediately. About NaN% of the listings in the Yorba Linda are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet available, 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 close to 2 stories. Most buildings in this market were built in 1986 and are Class B.