On average, listings lease in the $30's per square foot per year. The Idylwood region is going through a a rise in rates. In the last 3 months, the median rate went up $32 per sqft per year. That's a Inf% increase in rent.
Compared to the rest of the Washington D.C. market, the Idylwood region has smaller rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 1 listings have come on the market, which means listings are probably 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 900 sqft. Most buildings in this market are around 11 stories. Most buildings in this area were built in 1970 and are Class C.