In the last 90 days, 8 listings have come on the market, 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around sqft. Most buildings in this market are around 1 floors. Most buildings in this area were built in 1972 and are Class B.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Wholesale trade is the dominant industry in this area. Most of the folk of San Juan work from home. Commuting around 30 minutes a day is the norm for those who opt to reside in this part of town.