The typical asking rate per listing is in the $20's per square foot per year. The Anaheim region is experiencing a decrease in rates. In the last 3 months, the median rate fell $6 per sqft per year. That's a 19% decrease in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Anaheim region has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 40 listings have been made available, which means leases might be leasing quickly. You'll want to be prepared to make an offer immediately. About 3% of the listings in the Anaheim 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 1,950 sqft. Most properties in this region are close to 2 stories. Most buildings in this region were built in 1983 and are Class B.