The typical asking rate per listing is in the $50's per square foot per year. The Lafayette submarket is experiencing a a rise in rates. In the last 3 months, the median rate increased $13 per sqft per year. That's a 32% increase in rent.
Compared to the rest of the East Bay market, the Lafayette 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, 13 listings have been made available, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 15% of the listings in the Lafayette are subleases, so you might be able to snag a great spot on a short term. 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 1,300 sqft. Most properties in this market are around 3 floors. Most buildings in this area were built in 1981 and are Class B.