Most listings are in the $20's per square foot per year. The Golden Valley region is going through a a boost in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 5% increase in rent.
In the last 90 days, 16 listings have been posted online, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 13% of the office spaces in the Golden Valley are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,430 sqft. Most buildings in this area are around 3 stories. Most buildings in this region were built in 1980 and are Class B.