Most listings are in the $20's per square foot per year. The Madison submarket is experiencing a decline in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 6% decrease in rent.
In the last 90 days, 100 listings have been posted online, so you'll want to check back regularly for new listings. About 1% of the listings in the Madison are subleases, so you will probably have to consider a longer term lease. 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 1,820 sqft. Most buildings in this market are close to 2 stories. Most buildings in this market were built in 1987 and are Class B.