The typical asking rate per listing is in the $10's per square foot per year. The El Dorado Hills region is going through a decline in rates. In the last 3 months, the median rate fell $10 per sqft per year. That's a 36% decline in rent.
Compared to the rest of the Greater Sacramento market, the El Dorado Hills submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 25 listings have been posted online, which means listings most likley are going fast. You'll want to be prepared to make an offer immediately. 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 2,020 sqft. Most buildings in this region are around 1 stories. Most buildings in this area were built in 2001 and are Class B.