On average, listings lease in the $0's per square foot per year. The Bel Air region is seeing a decline in rates. In the last 3 months, the median rate decreased $21 per sqft per year. That's a 100% decrease in rent.
In the last 90 days, 0 listings have been posted online, which means leases are probably leasing quickly. You'll want to be prepared to make an offer immediately. About NaN% of the available space in the Bel Air are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 sqft. Most properties in this market are close to 2 stories. Most buildings in this area were built in 1998 and are Class B.