Most listings are in the $20's per square foot per year. The Old Town Chinatown submarket is going through a decline in rates. In the last 3 months, the median rate fell $7 per sqft per year. That's a 19% decline in rent.
Compared to the rest of the Greater Portland market, the Old Town Chinatown region has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 24 listings have been made available, which means new availabilities most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 29% of the available space in the Old Town Chinatown 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 listings below 2,000 sqft. Most buildings in this area are close to 4 floors. Most buildings in this market were built in 1904 and are Class B.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Education is the dominant industry in this market. Most of the folk of Old Town Chinatown work from home. Commuting approximately an hour a day is the norm for those who opt to reside in this part of town.