Most listings are in the $30's per square foot per year. The Hacienda Heights region is seeing a a rise in rates. In the last 3 months, the median rate rose $40 per sqft per year. That's a Inf% increase in rent.
Compared to the rest of the Metropolitan Los Angeles market, the Hacienda Heights submarket has more expensive rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 1 listings have been listed, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. 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 800 sqft. Most buildings in this market are approximately 1 floors. Most buildings in this area were built in 1979 and are Class C.