In the last 90 days, 5 listings have been made available, which means spaces might be leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 20% of the listings in the Yucaipa are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 sqft. Most buildings in this area were built in 2001 and are Class C.