On average, listings lease in the $20's per square foot per year. The Solvang region is seeing a decrease in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 10% decline in rent.
In the last 90 days, 3 listings have been made available, which means leases are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. 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 560 sqft. Most buildings in this market were built in 1986.