The typical asking rate per listing is in the $20's per square foot per year. The Walnut region is experiencing a an increase in rates. In the last 3 months, the median rate went up $0 per sqft per year. That's a 1% rise in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Walnut region has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 3 listings have come on the market, which means new availabilities most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 800 sqft. Most properties in this area are approximately 1 floors. Most buildings in this region were built in 1987.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Utilities is the dominant industry in this region. Commute by walking is the most popular way to get to work amongst Walnut folk. Commuting between 30 and 45 minutes a day is the norm for those who opt to reside in this part of town.