Compared to the rest of the Greater Portland market, the Sullivan's Gulch region has less expensive rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 0 listings have been posted online, which means new listings most likley are going fast. You'll want to be prepared to make an offer immediately. About NaN% of the available leases in the Sullivan's Gulch are subleases, so you will probably need to consider the implications of signing a direct lease with the building. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 330 sqft. Most buildings in this area are close to 2 stories. Most buildings in this area were built in 1958.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Waste services is the dominant industry in this region. Most of the folk of Sullivan's Gulch work from home. Commuting between 30 and 45 minutes a day is the norm for those who opt to reside in this part of town.