The typical asking rate per listing is in the $20's per square foot per year. The Lady Lake region is going through a an increase in rates. In the last 3 months, the median rate rose $2 per sqft per year. That's a 8% rise in rent.
In the last 90 days, 4 listings have come on the market, which means new availabilities 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 posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,080 sqft. Most buildings in this market are approximately 1 floors. Most buildings in this region were built in 2008 and are Class A.