Most listings are in the $10's per square foot per year. The Port Huron submarket is going through a decrease in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 7% decline in rent.
Compared to the rest of the Metro Detroit market, the Port Huron submarket has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 5 listings have been posted online, which means listings most likley are going fast. You'll want to be prepared to make an offer immediately. 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 10,000 sqft, there are still 0 office spaces below 2,000 sqft. Most properties in this region are approximately 1 stories. Most buildings in this area were built in 1963 and are Class B.