Most listings are in the $10's per square foot per year. The Walker submarket 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 4% rise in rent.
In the last 90 days, 9 listings have been posted online, which means leases might be going fast. You'll want to be prepared to make an offer immediately. About 11% of the available leases in the Walker 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.
Even though the median size is 3,870 sqft, there are still 0 new listings below 2,000 sqft. Most properties in this market are around 1 stories. Most buildings in this area were built in 1985 and are Class B.