Compared to the rest of the San Diego market, the Lemon Grove region has lower rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 2 listings have been made available, which means listings are probably going fast. You'll want to be prepared to make an offer immediately. About 50% of the office spaces in the Lemon Grove are subleases, so you might be able to snag a great spot on a short term. 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 410 sqft. Most properties in this area are around 2 floors. Most buildings in this region were built in 1985 and are Class Class C.