On average, listings lease in the $10's per square foot per year. The Montclair region is seeing a an increase in rates. In the last 3 months, the median rate rose $20 per sqft per year.
Compared to the rest of the Metropolitan Los Angeles market, the Montclair submarket has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 0 listings have been listed, which means spaces might be going fast. You'll want to be prepared to make an offer immediately. About Inf% of the listings in the Montclair 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 1,030 sqft. Most buildings in this area were built in 1986 and are Class B.