On average, listings lease in the $20's per square foot per year. The Walled Lake submarket is going through a a boost in rates. In the last 3 months, the median rate rose $22 per sqft per year.
Compared to the rest of the Metro Detroit market, the Walled Lake region has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 3 listings have been listed, which means spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 67% of the available space in the Walled Lake 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 on the market, so finding a space for a small business might be tough.
Even though the median size is 4,200 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this market are around 1 stories. Most buildings in this region were built in 1964 and are Class B.